Publications

enrichment of a set of micrornas during the cotton fiber development.	cotton (gossypium hirsutum) is one of the most important economic crops and provides excellent fibers for textile manufacture. in addition to its industrial and agricultural importance, the fiber cell (plant trichome) also is a biological model system for exploring gene expression and regulation. small rnas regulate many aspects of plant growth and development. however, whether small rnas are involved in regulation of fiber cell development is unknown.	2009	19788742
efficient production of gossypol from hairy root cultures of cotton (gossypium hirsutum l.).	a protocol for induction and establishment of agrobacterium rhizogenes mediated hairy root culture of gossypium hirsutum was developed through infection with the a4 strain and co-cultivation on hormone-free semi-solid ms medium with b5 vitamins. it resulted in the emergence of hairy roots from the leaf explants, 21 days after infection. the transformation of hairy roots was established by pcr amplification of rol b and rol c genes of the ri plasmid. all root lines expressed gossypol, although di ...	2009	19751178
evaluation of transgenic soybean exhibiting high expression of a synthetic bacillus thuringiensis cry1a transgene for suppressing lepidopteran population densities and crop injury.	several transgenic lines of soybean, glycine max (l.) merr., expressing a synthetic cry1a gene from bacillus thuringiensis (bt), were examined in replicated field trials in 2003-2007 for suppression of naturally occurring population densities of lepidopteran pests and the resultant crop injury that they caused. bt soybean and negative controls (isogenic segregants and parental lines) were evaluated against velvetbean caterpillar, anticarsia gemmatalis (hübner); soybean looper, pseudoplusia inclu ...	2009	19736779
crop juxtaposition affects cotton fiber quality in georgia farmscapes.	phytophagous stink bugs (hemiptera: pentatomidae), including green stink bug [acrosternum hilare (say)], southern green stink bug [nezara viridula (l.)], and brown stink bug [euschistus servus (say)], have become a serious production issue for southeastern u.s. cotton, gossypium hirsutum l., growers. to investigate how different agronomic crops may affect stink bug damage and fiber quality in neighboring cotton fields, replicated 1.6-2.0-ha trials were planted with corn (zea mays l.), peanut (ar ...	2009	19736764
efficacy of cry1ac:cry1f proteins in cotton leaf tissue against fall armyworm, beet armyworm, and soybean looper (lepidoptera: noctuidae).	cotton, gossypium hirsutum l., plants expressing cry1ac and cry1f insecticidal crystal proteins of bacillus thuringiensis berliner (bt) were evaluated against selected lepidopteran pests including fall armyworm, spodoptera frugiperda (j. e. smith), beet armyworm, spodoptera exigua (hübner), and soybean looper, pseudoplusia includens (walker). studies were conducted in a range of environments, challenging various cotton tissue types from several varieties containing a combination of cry1ac and cr ...	2009	19736762
the ascorbate peroxidase regulated by h(2)o(2) and ethylene is involved in cotton fiber cell elongation by modulating ros homeostasis.	ascorbate peroxidase (apx) is a reactive oxygen species (ross) scavenging enzyme involved in regulation of intracellular ros levels by reduction of h(2)o(2) to water using ascorbate as an electron donor. in new phytologist 2007; 175:462-71, we identified a cotton cytosolic apx1 (ghapx1) that was significantly accumulated during the fast fiber-cell elongation period, through a proteomics approach. both the transcript levels of ghapx1 and the total apx activity were highly induced in response to i ...	2008	19704716
involvement of extracellular cu/zn superoxide dismutase in cotton fiber primary and secondary cell wall biosynthesis.	extracellular cu/zn superoxide dismutases (csds) that catalyze the conversion of superoxide to hydrogen peroxide have been suggested to be involved in lignification of secondary walls in spinach, pine and aspen. in cotton fibers, hydrogen peroxide was proposed to be involved in the induction of secondary cell wall biosynthesis. recently, we identified extracellular csds from developing cotton fibers using both immunological and epitope tagging techniques. since cotton fibers are not lignified, w ...	2008	19704453
spatiotemporal patterns and dispersal of stink bugs (heteroptera: pentatomidae) in peanut-cotton farmscapes.	in the southeast united states, a field of peanuts, arachis hypogaea l., is often closely associated with a field of cotton, gossypium hirsutum l. the objective of this 4-yr on-farm study was to examine and compare the spatiotemporal patterns and dispersal of the southern green stink bug, nezara viridula l., and the brown stink bug, euschistus servus (say), in six of these peanut-cotton farmscapes. gs(+) version 9 was used to generate interpolated estimates of stink bug density by inverse distan ...	2009	19689882
heat stress-induced limitations to reproductive success in gossypium hirsutum.	using in vitro systems, numerous authors have cited the sensitivity of pollen tube growth to high temperature as a major cause of low yields for crops with valuable reproductive structures. we investigated the hypothesis that in vivo fertilization efficiency would be negatively affected by heat stress-induced changes in energy reserves and calcium-mediated oxidative status in the pistil. gossypium hirsutum plants exposed to optimal (30/20 degrees c) or high day temperature (38/20 degrees c) cond ...	2009	19656331
functional analysis of a cotton cellulose synthase a4 gene promoter in transgenic tobacco plants.	a 1,482-bp promoter sequence of the cotton cellulose synthase gene (ghcesa4) was isolated from chinese cultivar cri12 of gossypium hirsutum, and transcriptionally fused to a beta-glucuronidase (gus) reporter gene for investigation of important regions controlling gene expression in transgenic tobacco plants. histochemical staining showed that the full-length promoter directs efficient expression of the reporter gene in the roots, hypocotyls, vascular tissues of stems, trichomes, the central leaf ...	2009	19655147
conserved mirna analysis in gossypium hirsutum through small rna sequencing.	several mirna family and their targets in cotton had been identified by computational methods based on the conserved characterization of mirnas. so far, there are no experiments to validate the existence of mirnas in cotton. in this study, to analyze the mirnas in cotton, a small rna library of sequences from 18 to 26 nt of gossypium hirsutum seedling has been built by high-throughput sequencing. in this library, 34 conserved mirna families were identified by homology search and the mirna sequen ...	2009	19628031
[effects of mepiquat chloride on inorganic elements contents in seeds of transgenic insect-resistant cotton determined by icp-ms].	to evaluate the effects of a worldwide used plant growth regulator mepiquat chloride on the nutrition value and safety of seeds of transgenic bt cotton, inorganic element components and contents in seeds of bt cotton (gossypium hirsutum cv. guoxin 6) under field condition were determined using icp-ms. in bt cotton seeds, 54 kinds of inorganic elements were identified by icp-ms, and 5 kinds of major elements, k, p, mg, ca and na, were in range from 138.3 to 13,835.1 microg x g(-1). the contents o ...	2009	19626916
sucrose synthase affects carbon partitioning to increase cellulose production and altered cell wall ultrastructure.	overexpression of the gossypium hirsutum sucrose synthase (susy) gene under the control of 2 promoters was examined in hybrid poplar (populus alba x grandidentata). analysis of rna transcript abundance, enzyme activity, cell wall composition, and soluble carbohydrates revealed significant changes in the transgenic lines. all lines showed significantly increased susy enzyme activity in developing xylem. this activity manifested in altered secondary cell wall cellulose content per dry weight in al ...	2009	19625620
quantification of cry1ac and cry1f bacillus thuringiensis insecticidal proteins in selected transgenic cotton plant tissue types.	quantitative enzyme-linked immunosorbent assays were used to characterize the geographical (locations) and temporal (through 6 wk) expression of crylac, from bacillus thuringiensis variety kurstaki, and cry1f, from b. thuringiensis variety aizawai, in transgenic cotton, gossypium hirsutum l., plant structures. terminal leaves, squares (flower buds), flowers, bolls (fruit), and mature leaves located five and eight nodes below the terminal apex were sampled during weeks 2, 4, and 6 after the initi ...	2009	19610451
effects of pink bollworm resistance to bacillus thuringiensis on phenoloxidase activity and susceptibility to entomopathogenic nematodes.	widespread planting of crops genetically engineered to produce insecticidal toxins from the bacterium bacillus thuringiensis (bt) imposes selection on many key agricultural pests to evolve resistance to bt. fitness costs can slow the evolution of bt resistance. we examined effects of entomopathogenic nematodes on fitness costs of bt resistance in the pink bollworm, pectinophora gossypiella (saunders) (lepidoptera: gelechiidae), a major pest of cotton, gossypium hirsutum l., in the southwestern u ...	2009	19610442
cry2ab tolerance response of helicoverpa armigera (lepidoptera: noctuidae) populations from crylac cotton planting region.	helicoverpa armigera (hübner) (lepidoptera: noctuidae) is an important lepidopteran pest of cotton, gossypium hirsutum l., in asia. transgenic cotton expressing the cry1ac gene from bacillus thuringiensis (bt) has been widely planted for control of this pest. for managing the potential risk from resistance evolution in this pest, a new transgenic bt cotton containing cry1ac and cry2ab genes (gene pyramided strategy) was designed as a successor of cry1ac cotton. this article reports on levels of ...	2009	19610441
trichogramma (hymenoptera: trichogrammatidae) ecology in a tropical bt transgenic cotton cropping system: sampling to improve seasonal pest impact estimates in the ord river irrigation area, australia.	trichogramma westwood (hymenoptera: trichogrammatidae) cause high mortality rates in the potentially resistant pest species, helicoverpa armigera (hübner) (lepidoptera: noctuidae), and are considered integral to the resistance management plan for bacillus thuringiensis transgenic cotton, gossypium hirsutum l., production in the ord river irrigation area (oria), western australia. measured as percentage of parasitism, trichogramma activity seems highly variable over time; yet, it contributes sign ...	2009	19610415
flower-inhabiting frankliniella thrips (thysanoptera: thripidae), pesticides, and fusarium hardlock in cotton.	cotton hardlock caused by fusarium verticillioides (sacc. nirenberg) can reduce cotton, gossypium hirsutum l., yields > 70% in the southeastern united states. the spores infect flowers on the day of pollination, resulting in hardlock, which is the failure of the fiber to fluff as the boll opens at maturity. frankliniella spp. thrips (thysanoptera: thripidae) inhabiting the flowers are hypothesized to increase hardlock by spreading the conidia or by creating entranceways for the germinating fusar ...	2009	19610399
molecular characterization and pathogenicity of tomato yellow leaf curl virus in china.	several tomato production regions in china were surveyed for tomato yellow leaf curl disease (tylcd), and 31 tomato leaf samples showing tylcd-like symptoms were collected. the partial or full-length genomes of these isolates were sequenced and tomato yellow leaf curl virus (tylcv) was detected in shanghai, zhejiang, jiangsu shandong and hebei provinces of china. the tylcv isolates found in china share high sequence identity ([98%) and have more than 97% sequence identity with tylcvil[ il:reo] ( ...	2009	19590945
molecular cloning and characterization of five genes encoding pentatricopeptide repeat proteins from upland cotton (gossypium hirsutum l.).	the pentatricopeptide repeat (ppr) protein family is one of the largest and most complex families in plants. these proteins contain multiple 35-amino acid repeats that are proposed to form a super helix capable of binding rna. ppr proteins have been implicated in many crucial functions broadly involving organelle biogenesis and plant development. in this study, we identified many genes encoding ppr protein in upland cotton through an extensive survey of the database of gossypium hirsutum. furthe ...	2010	19578975
phenotypic and molecular evaluation of cotton hairy roots as a model system for studying nematode resistance.	agrobacterium rhizogenes-induced cotton (gossypium hirsutum l.) hairy roots were evaluated as a model system for studying molecular cotton-nematode interactions. hairy root cultures were developed from the root-knot nematode (rkn) (meloidogyne incognita [kofoid and white] chitwood, race 3)-resistant breeding line m315 and from the reniform nematode (rn) (rotylenchulus reniformis linford & oliveira)-resistant accession gb713 (g. barbadense l.) and compared to a nematode-susceptible culture derive ...	2009	19578854
molecular and biochemical evidence for phenylpropanoid synthesis and presence of wall-linked phenolics in cotton fibers.	the mature cotton (gossypium hirsutum l.) fiber is a single cell with a typically thickened secondary cell wall. the aim of this research was to use molecular, spectroscopic and chemical techniques to investigate the possible occurrence of previously overlooked accumulation of phenolics during secondary cell wall formation in cotton fibers. relative quantitative reverse transcription-polymerase chain reaction analysis showed that ghcad6 and ghcad1 were predominantly expressed among seven gene ho ...	2009	19566641
transcript profiling during fiber development identifies pathways in secondary metabolism and cell wall structure that may contribute to cotton fiber quality.	a global gene expression profiling study at different stages of fiber development was undertaken on two cotton species cultivated for fiber, gossypium hirsutum (l.) and g. barbadense (l.). a large proportion of the genome was expressed during both fiber elongation and subsequent secondary cell wall thickening. there was a major shift in abundance of transcripts for gene regulation, cell organization and metabolism between fiber elongation and fiber thickening that was fundamentally similar in bo ...	2009	19520671
identification and molecular mapping of a fusarium wilt resistant gene in upland cotton.	fusarium wilt (fw) is one of the most economically damaging cotton diseases worldwide, causing yellowing, wilting, defoliation, vascular tissue damage and ultimately death. identification of molecular markers linked to fw genes is vital to incorporate resistance into elite cotton cultivars. an intraspecific f(2) in gossypium hirsutum l. was developed by crossing with a highly resistant cultivar zhongmiansuo 35 (zms35) and a susceptible cultivar junmian 1 to screen simple sequence repeats (ssrs) ...	2009	19506830
expression and localization of ghh6l, a putative classical arabinogalactan protein in cotton (gossypium hirsutum).	arabinogalactan proteins (agps) are a large family of highly glycosylated of hydroxyproline-rich glycoproteins that play important roles in plant growth, development, and signal transduction. a cdna encoding a putative classical agp named ghh6l was isolated from cotton fiber cdna libraries, and the deduced protein contains 17 copies of repetitive motif of x-y-proline-proline-proline (where x is serine or alanine and y is threonine or serine). northern blotting analysis and quantitative rt-pcr re ...	2009	19499153
a synthetic auxin (naa) suppresses secondary wall cellulose synthesis and enhances elongation in cultured cotton fiber.	use of a synthetic auxin (naphthalene-1-acetic acid, naa) to start (gossypium hirsutum) ovule/fiber cultures hindered fiber secondary wall cellulose synthesis compared with natural auxin (indole-3-acetic acid, iaa). in contrast, naa promoted fiber elongation and ovule weight gain, which resulted in larger ovule/fiber units. to reach these conclusions, fiber and ovule growth parameters were measured and cell wall characteristics were examined microscopically. the differences in fiber from naa and ...	2009	19479259
molecular diagnostic for boll weevil (coleoptera: curculionidae) based on amplification of three species-specific microsatellites.	the boll weevil, anthonomus grandis grandis boheman (coleoptera: curculionidae), is a serious pest of cultivated cotton, gossypium hirsutum l., in the americas, and reinfestation of zones from which they have been eradicated is of perpetual concern. extensive arrays of pheromone traps monitor for reintroductions, but occasionally the traps collect nontarget weevils that can be misidentified by scouts. for example, the congeneric pepper weevil, anthonomus eugenii cano, and other superficially sim ...	2009	19449658
frequency of alleles conferring resistance to the bacillus thuringiensis toxins cry1ac and cry2ab in australian populations of helicoverpa punctigera (lepidoptera: noctuidae) from 2002 to 2006.	helicoverpa punctigera and helicoverpa armigera (hübner) (lepidoptera: noctuidae) are important pests of field and horticultural crops in australia. the former is endemic to the continent, whereas the latter is also distributed in africa and asia. although h. armigera rapidly developed resistance to virtually every group of insecticide used against it, there is only one report of resistance to an insecticide in h. punctigera. in 1996 the australian cotton industry adopted ingard, which expresses ...	2009	19449655
effect of fumigation on rotylenchulus reniformis population density through subsurface drip irrigation located every other furrow.	plots naturally infested with rotylenchulus reniformis were sampled in the spring of 2006 and 2007 at depths of 15 and 30 cm in the bed, furrow over the drip tape, and "dry" furrow, and at approximately 40 to 45 cm depth in the bed and dry furrow. then, 1,3-dichloropropene (telone ec) was injected into the subsurface drip irrigation at 46 kg a.i./ha, and 3 to 4 weeks later the plots were resampled and assayed for nematodes. the transformed values for nematode population density (ivlrr) before fu ...	2008	19440261
alternate row placement is ineffective for cultural control of meloidogyne incognita in cotton.	the objective of this study was to determine if planting cotton into the space between the previous year's rows reduces crop loss due to meloidogyne incognita compared to planting in the same row every year. row placement had a significant (p </= 0.05) effect on nematode population levels only on 8 july 2005. plots receiving 1,3-dichloropropene plus aldicarb had lower nematode population levels than non-fumigated plots on 24 may and 8 july in 2005, but not in 2004. the effect of nematicide treat ...	2008	19440259
ghzfp1, a novel ccch-type zinc finger protein from cotton, enhances salt stress tolerance and fungal disease resistance in transgenic tobacco by interacting with gzird21a and gzipr5.	* zinc finger proteins are a superfamily involved in many aspects of plant growth and development. however, ccch-type zinc finger proteins involved in plant stress tolerance are poorly understood. * a cdna clone designated gossypium hirsutum zinc finger protein 1 (ghzfp1), which encodes a novel ccch-type zinc finger protein, was isolated from a salt-induced cotton (g. hirsutum) cdna library using differential hybridization screening and further studied in transgenic tobacco nicotiana tabacum cv. ...	2009	19402879
a new interspecific, gossypium hirsutum x g. barbadense, ril population: towards a unified consensus linkage map of tetraploid cotton.	we report the development of a new interspecific cotton recombinant inbred line (ril) population of 140 lines deriving from an interspecific cross between gossypium hirsutum (gh) and g. barbadense (gb), using the same two parents that have served for the construction of a bc(1) map and for the marker-assisted backcross selection program underway at cirad. two marker systems, microsatellites and aflps, were used. an important feature of the ril population was its marked segregation distortion wit ...	2009	19387609
a specialized outer layer of the primary cell wall joins elongating cotton fibers into tissue-like bundles.	cotton (gossypium hirsutum) provides the world's dominant renewable textile fiber, and cotton fiber is valued as a research model because of its extensive elongation and secondary wall thickening. previously, it was assumed that fibers elongated as individual cells. in contrast, observation by cryo-field emission-scanning electron microscopy of cotton fibers developing in situ within the boll demonstrated that fibers elongate within tissue-like bundles. these bundles were entrained by twisting f ...	2009	19369592
genetic diversity evaluation of some elite cotton varieties by rapd analysis.	random amplified polymorphic dna (rapd) analysis was used to evaluate the genetic diversity of elite commercial cotton varieties. twenty two varieties belonging to gossypium hirsutum l. and one to g. arboreum l. were analyzed with 50 random decamer primers using the polymerase chain reaction (pcr). forty nine primers detected polymorphism in all 23 cotton varieties, while one produced monomorphic amplification profiles. a total of 349 bands were amplified, 89.1% of which were polymorphic. cluste ...	1997	19352756
interaction of novel dobzhansky-muller type genes for the induction of hybrid lethality between gossypium hirsutum and g. barbadense cv. coastland r4-4.	hybrid lethality was identified in interspecific hybrids between two cotton species, gossypium hirsutum and g. barbadense cv. coastland r4-4 (r4-4). genetic analysis indicated that the lethal symptom was controlled by two dominant complementary genes, one from g. hirsutum and another from r4-4. microsatellite mapping identified the location of the causal gene in g. hirsutum as chromosome d8, while the r4-4 gene was placed on chromosome d11. our data indicate that these genes conform to the dobzh ...	2009	19330312
influence of incubation solution on the rate of recovery of pratylenchus brachyurus from cotton roots.	the rate of recovery of pratylenchus brachyurus from cotton roots was enhanced when the tissue was incubated in solutions containing 10 ppm ethoxyethyl mercuric chloride, 50 ppm dihydrostreptomycin sulfate, 50, 100, or 1,000 ppm diisobutylphenoxethyl dimethyl benzyl ammonium chloride, or mixtures of these compounds. incubation in 10 or 100 ppm zinc sulfate, zinc chloride, or magnesium chloride also enhanced the rate of recovery. incubation solutions containing 1 or 1,000 ppm zinc chloride or mag ...	1971	19322395
reaction of field-grown sericea lespedeza to selected meloidogyne spp.	five sericea lespedeza (lespedeza cuneata [dumont] g. don) breeding lines resistant to meloidogyne incognita, m. incognita acrita, and m. hapla as seedlings in greenhouse tests and two varieties were resistant to m. incognita acrita in field experiments. root-knot galling and larvae numbers were less for resistant entries than for the susceptible check when grown in root-knot infested field soil for three growing seasons. forage yields were as much as 57 times greater for resistant entries than ...	1971	19322393
interaction of rotylenchulus reniformis, soil salinity, and cotton.	rotylenchulus reni]ormis occurred equally in relatively non-saline (4.0 mmhos/cm) and highly-saline (16.5 mmhos/cm) soils in sampling transects across zones of depressed plant growth in six texas cotton fields.results from greenhouse pot experiments indicated progressive positive interaction of salinity and r. reni[ormis pathogenicity in the range 6-18 mmhos/cm.	1971	19322365
role of nematodes and soil-borne fungi in cotton stunt.	the nematodes, pratylenchus brachyurus, trichodorus christiei, and t. porosus and the soil-borne fungi, rhizoctonia solani, pythium debaryanum, p. irregulare, p. ultimum, and fusarium spp. were the pathogens most frequently found in the roots and rhizosphere of field-grown cotton (gossypium hirsutum) showing "stunt" symptoms. field-plot application of the nematicide d-d (l,2-dichloropropane, 1,3-dichloropropene) at 373.4 liter/ha (40 gal/a) significantly increased plant growth and yield. a fungi ...	1971	19322335
hatching response of meloidogyne incognita acrita to electric shock.	the influence of electric shock on hatch of meloidogyne incognita acrita from egg masses taken from roots of 'acala sj-i' cotton (gossypium hirsutum l.) was studied. egg masses in tap water were individually placed between the tips of needle electrodes 1 mm apart and exposed to potentials of l, 10, 20, and 60 vdc/mm at 1, 1, 1, and 86 milliamperes dc, respectively, for periods of 2 and 60 seconds. hatched larvae were counted at five-day intervals for 60 days. of the eight treatment combinations ...	1970	19322315
population dynamics of plant nematodes in cultivated soil: effect of summer cover crops in newly cleared land.	five nematode species were studied for ability to develop on seven summer cover crops in rotation with tomato transplants grown every third year. increase of tylenchorhynchus claytoni, trichodorus christiei, pratylenchus brachyurus, helicotylenchus dihystera, and xiphinema americanum in newly cleared soil varied with different cover crops. no substantial nematode population increases occurred until the third summer of crop growth. all species except x. americanum and h. dihystera developed best ...	1970	19322300
post-infection development and histopathology of meloidogyne incognita in resistant cotton.	the numbers of meloidogyne incognita larvae which migrated from cotton roots declined over a 16-day period, but the difference in numbers migrating from resistant and susceptible cultivars was not significant. larvae penetrated susceptible roots, matured, and reproduced within 14 days following inoculation, whereas nematode development in the resistant roots was greatly retarded. three types of histological responses were observed in infected, resistant roots, and these correlated with the degre ...	1974	19319359
resistance of cotton to the root-knot nematode, meloidogyne incognita.	cotton plants resistant to meloidogyne incognita had roots characterized by fewer and smaller galls, and females that produced fewer egg masses containing fewer eggs than did susceptible plants. many galls on resistant roots contained no nematodes at the time of examination. penetration of the resistant cultivar was equal to that of the susceptible cultivar and independent of the number of nematodes in the inoculum. fewer nematodes penetrated resistant or susceptible plants with eight leaves tha ...	1974	19319358
inhibition of rotylenchulus reniformis penetration of tomato and cotton roots with foliar applications of oxamyl.	foliar applications of oxamyl (methyl n', n'-dimethyl-n-[(methylcarbamoyl)oxy]-l-thiooxamimidate) were applied 24 hr before transplanting seedlings to soil infested with rotylenchulus reniformis. with a single application of oxamyl, tomato seedlings required 600 ppm to significantly inhibit r. reniformis penetration. cotton seedlings, however, required a single application of 2400 ppm for significant inhibition of penetration, but only 600 ppm when two or more applications were used.	1973	19319336
influence of concomitant pratylenchus brachyurus and meloidogyne spp. on root penetration and population dynamics.	populations of pratylenchus brachyurus on cotton were increased significantly in the presence of either meloidogyne incognita or m. arenaria.this occurred with either simultaneous inoculation or prior invasion by m. incognita. p. brachyurus penetrated cotton roots previously invaded by, or simultaneously inoculated with, m. incognita, as well as, or better than, in the absence of m. incognita. prior invasion by m. incognita, however, suppressed p. brachyurus populations on tomato, while it had n ...	1973	19319334
the myb transcription factor ghmyb25 regulates early fibre and trichome development.	little is still known about the developmental control of the long seed coat trichomes of cotton (gossypium hirsutum l.). in arabidopsis, leaf trichome initiation is regulated by a group of well-defined transcription factors that includes myb and homeodomain types. many mybs are expressed in fibres, but their roles in fibre development remain unclear. we analysed the function of one myb transcription factor, ghmyb25, identified from transcriptome comparisons between wild-type and fibreless cotton ...	2009	19309462
the influence of trichoderma harzianum on the root-knot fusarium wilt complex in cotton.	wilt-susceptible cultivar 'rowden' cotton was inoculated wilh meloidogyne incognita (n), trichoderma harzianum (t), and fusarium oxysporum f. sp. vasinfectum (f) alone and in all combinations in various time sequences. plants inoculated with f alone or in combination with t did not develop wilt, simultaneous inoculation of 7-day-old seedlings with all three organisms (ntf) produced earliest wilt. however, plants receiving nematodes at 7 days and fusarium and trichoderma at 2 or 4 weeks later (n- ...	1976	19308202
interactions of concomitant species of nematodes and fusarium oxysporum f. sp. vasinfectum on cotton.	meloidogyne incognita, hoplolaintus galeatus, and north carolina and georgia populations of belonolaimus longicaudatus were introduced singly and in various combinations with fusarium oxysporum f. sp. vasinfectum on wilt-susceptible 'rowden' cotton. of all the nematodes, the combination of the n. c. population of b. longicaudatus with fusarium promoted greatest wilt development. h. galeatus had no effect on wilt. with fusarium plus m. incognito or b. longicaudatus, high nematode levels promoted ...	1976	19308201
effects of light intensity and quality effects on reproduction of plant-parasitic nematodes.	growing cotton in a greenhouse with 12-h of supplemental light [8,608 lux (800 ft-c) from combination of mercury and lucalux lamps] resulted in 2 x to > 3 x greater reproduction of meloidogyne incognita and belonolaimus longicaudatus as compared to natural light alone. rate of increase of hoplolaimus galeatus was affected little in this experiment. in a second experiment under controlled conditions in a phytotron, light source and intensity had greater influence on the reproduction of heterodera ...	1975	19308183
effects of soil texture on the interaction between rhizoctonia solani and meloidogyne incognita on cotton seedlings.	soils containing 60, 75, and 90% coarse particles (sand plus coarse silt) were prepared by dilution of a field soil with 246microm (60-mesh) silica sand. as the coarse-particle content of the soils increased, the synergistic interaction between meloidogyne incognita and rhizoctonia solani on cotton seedlings increased. increasing the coarse-particle content of the soil also increased damage from the nematode alone and slightly increased soreshin damage from r. solani alone.	1975	19308162
effects of soil temperatures and inoculum levels of meloidogyne incognita and rhizoctonia solani on seedling disease of cotton.	soreshin of cotton was more severe from combined infections of rhizoctonia solani and meloidogyne incognita than from either organism alone, when both critical soil temperature and inoculum concentrations were present. optimum soil temperatures for disease development from combined infections were 18 and 21 c. either 2,500 or 5,000 m. incognita larvae per plant, combined with r. solani, increased seedling disease severity over that caused by r. solani alone. when 100 or 500 larvae per plant were ...	1975	19308161
crop rotation and herbicide effects on population densities of plant-parasitic nematodes.	the influence of herbicides and mono- and multicropping sequences on population densities of nematode species common in corn, cotton, peanut, and soybean fields in the southeastern united states was studied for 4 years. each experimental plot was sampled at monthly intervals. the application of herbicides did not significantly affect nematode population densities. meloidogyne incognita and trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean. more ...	1975	19308149
autoradiography of developing syncytia in cotton roots infected with meloidogyne incognita.	cotton (gossypium hirsutum) seedlings, uniformly infected with meloidogyne incognita, were exposed for periods of 1-15 days to a nutrient solution containing tritium-labelled thymidine. syncytium formation began with the amalgamation of cells near the nematode head, and was followed by synchronized mitoses of the nuclei which had been incorporated into a single cell. syncytial nuclei synthesized dna in roots harvested 3, 6, 9, 12, and 15 days after inoculation. seedlings transferred from unlabel ...	1975	19308135
dynamics of concomitant field populations of hoplolaimus columbus and meloidogyne incognita.	from the fall of 1968 through the summer of 1973, a georgia cotton field with a lengthy history of the cotton stunt disease complex was sampled for the presence of plant parasitic nematodes. although meloidogyne incognita was recovered on all sampling dates, concomitant populations of hoplolaimus columbus were not recovered until the spring of 1970. during the succeeding four growing seasons, the population density and horizontal distribution of h. columbus increased, and h. columbus replaced m. ...	1974	19308121
seasonal population dynamics of selected plant-parasitic nematodes on four monocultured crops.	seasonal fluctuations in field populations of meloidogyne incognita, pratylenchus zeae, p. brachyurus, criconemoides ornatus, trichodorus christiei, and helicotylenchus dihystera on monocultured corn, cotton, peanut, and soybean were determined monthly for 4 yr. population densities of m. incognita were greater in corn and cotton plots than in peanut and soybean plots from july until january. those of pratylenchus spp. were greater on corn and soybean than on cotton and peanut during all months ...	1974	19308120
interaction of pratylenchus brachyurus and gigaspora margarita on cotton.	an endomycorrhizal fungus, gigaspora margarita, was more effective in stimulating the growth of cotton (gossypium hirsutum) 'coker 201' at a low fertility level (1.77 gm 10-10-10 n-p-k/pot) than doubling the fertility rate for nonmycorrhizal plants. gigaspora margarita alone stimulated shoot growth (height, weight, and flower production by 96%, 553%, and 760%, respectively) and root growth (385%) over that of nonmycorrhizal controls at low fertility. plant development was also stimulated by g. m ...	1978	19305806
terpenoid aldehydes in cotton roots susceptible and resistant to the root-knot nematode, meloidogyne incognita.	we investigated the role of terpenoid aldehydes in the resistance of cotton (gossypium hirsutum) to the root-knot nematode (meloidogyne incognita). three-day-old, root-knot-resistant ('auburn 623') and -susceptible ('deltapine 16') seedlings were inoculated with m. incognita. comparable portions of inoculated and noninoculated roots were harvested 2, 4, 7, and 10 days later. terpenoid aldehydes were extracted, separated by thin-layer chromatography, eluted as their phloroglucinol derivatives, an ...	1977	19305600
effects of subsoiling and nematicides on hoplolaimus columbus populations and cotton yield.	subsoiling to a depth of 35 cm under the planting row for 3 consecutive years increased annual yields of seed cotton by 50 to 200%. annual subsoiling was essential for maximum yields. the application of a nematicide, 1,2-dibromo-3-chloropropane (dbcp) or aldicarb, reduced the population of hoplolaimus columbus but did not increase seed-cotton yields over subsoiling alone. subsoiling reduced h. columbus in the top 20 cm of soil since the treatment favored deeper penetration by much of the root sy ...	1977	19305573
granular nematicides as adjuncts to fumigants for control of cotton root-knot nematodes.	growth and yield of cotton were best with combinations of fumigants and organophosphate and carbamate nematicides. organophosphates or carbamates used alone did not give season-long control of root-knot nematodes. long-term control was poor because the temporary sublethal effects of these materials diminished soon enough lhat the nematodes could reproduce. the nematodes survived the treatments and a year of nonhost culture, and damaged a susceptible host crop 2 years after treatment. no such dam ...	1979	19305548
interaction of population levels of fusarium oxysporum f. sp. vasinfectum and meloidogyne incognita on cotton.	in autoclaved greenhouse soil without fusarium oxysporum f. sp. vasinfectum, meloidogyne incognita did not cause leaf or vascular discoloration of 59-day-old cotton plants. plants had root galls with as few as 50 meloidogyne larvae per plant. root galling was directly proportional to the initial nematode population level. fusarium wilt symptoms occurred without nematodes with 77,000 fungus propagules or more per gram of soil. as few as 50 meloidogyne larvae accompanying 650 fungus propagules cau ...	1979	19305546
influence of aphelenchus avenae on vesicular-arbuscular endomycorrhizal growth response in cotton.	the influence of aphelenchus avenae on the relationship between cotton (gossypium hirsutum 'stoneville 213') and gigaspora margarita or glomus etunicatus was assessed by its effect on the mycorrhizal stimulation of plant growth and microorganism reproduction. the mycophagous nematode usually did not suppress stimulation of shoot growth resulting from mycorrhizae (g. margarita) at inoculum levels of 3,000 or 6,000 nematodes per pot, but retarded root growth at 6,000 per pot. when the nematode ino ...	1981	19300721
nematicides and nonconventional soil amendments in the management of root-knot nematode on cotton.	granular and liquid commercial humates, with micronutrients, and a microbial fermentation product were compared in several combinations with nematicides for their effects on cotton lint yield and root-knot nematode suppression. fumigant nematicides effectively reduced cotton root galling caused by root-knot nematodes, and cotton lint yields increased. organophosphates and carbamates were not effective. occasionally, cotton lint yields were increased or maintained with combination treatments o f ...	1984	19295893
resistant germplasm in gossypium species and related plants to rotylenchulus reniformis.	gossypium hirsutum, g. herbaceum, g. arboreum, g. barbadense, wild gossypium spp., hibiscus spp, and other malvaceae were tested in the greenhouse to identify germplasm resistant to rotylenchulus reniformis (rr). host resistance was based on rr egg production per gram of root compared with known g. hirsutum susceptible 'deltapine 16' as check. g. longicalyx and sida rhombifolia were nonhosts. high levels of resistance were found in g. stocksii, g. somalense, and g. barbadense 'texas 110.' other ...	1984	19295892
parasitic variability of meloidogyne incognita populations on susceptible and resistant cotton.	root gall induction and egg production by the four recognized host races and two cytological races of meloidogyne incognita were compared on cotton gossypium hirsutum cvs. deltapine 16 (root-knot susceptible) and auburn 634 (highly resistant). the 12 nematode populations included in the study were from various parts of the world. no population increases occurred on the highly resistant cultivar. after 45 days, populations of host races 1 and 2 induced slight root galling on both cuhivars with on ...	1983	19295806
influence of soil temperature on meloidogyne incognita resistant and susceptible cotton, gossypium hirsutum.	the degree of resistance by a cotton plant to meloidogyne incognita is affected by soil temperature, particularly in moderately resistant cultivars, the total number of nematodes in the resistant and moderately resistant rools at 35 c was equal to, or greater than, the number in susceptible roots at 20, 25, or 30 c. a shift in numbers to developing and egg-bearing forms of nematodes in the susceptible cultivar as tentperature increased indicates development was affected by temperature rather tha ...	1982	19295718
penetration and postinfection development of meloidogyne incognita on cotton as affected by glomus intraradices and phosphorus.	the influence of the vesicular-arbuscular mycorrhizal fungus glomus intraradices (gi) and superphosphate (p) on penetration, development, and reproduction of meloidogyne incognita (mi) was studied on the mi-susceptible cotton cultivar stoneville 213 in an environmental chamber at 28 c. plants were inoculated with mi eggs at planting or after 28 days and destructively sampled 7, 14, 21, and 28 days after nematode inoculation. mi penetration after 7 days was similar in all treatments at either ino ...	1986	19294207
crop rotation and races of meloidogyne incognita in cotton root-knot management.	the influence o f various crop rotations and nematode inoculum levels on subsequent population densities of meloidogyne incognita races 1 and 3 were studied in microplots. ten different 3-year sequences o f cotton, corn, peanut, or soybean, all with cotton as the 3rd-year crop, were grown in microplots infested with each race. cotton monoculture, two seasons o f corn, or cotton followed by corn resulted in high race 3 population densities and severe root galling on cotton the 3rd year. peanut fo ...	1984	19294030
potential of crops uncommon to alabama for management of root-knot and soybean cyst nematodes.	vigna unguiculata, cassia fasiculata, and sesamum indicum did not support meloidogyne arenaria, m. incognita, or heterodera glycines race 4 in greenhouse studies with soils from peanut and soybean fields. fagopyron eseulentum, cyamopsis tetragonoloba, and cucurbita pepo were hosts to the two meloidogyne spp. but were nonhosts to h. glycines. meloidogyne arenaria and m. incognita galled but reproduced poorly in the roots of three types of amaranthus cruentus, and low densities of these two meloid ...	1988	19290317
response of cotton to infection by hoplolaimus columbus.	three field experiments were established in 1987 to determine the reaction of five cotton cultivars to infection by hoplolaimus columbus and the efficacy of selected nematicides against this nematode. at two sites in calhoun county, south carolina, early season plant growth and subsequent yields were greater in plots treated with aldicarb, fenamiphos, and 1,3-dichloropropene. hoplolaimus columbus suppressed yields approximately 10% at site 1 and 25% at site 2; however, greater yield suppression ...	1988	19290310
comparative resistance of selected acala 1517 cotton cultivars to meloidogyne incognita race 3.	little information is available regarding the levels of meloidogyne incognita race 3 resistance in acala 1517 cotton cultivars compared with cultivars grown outside the southwestern united states. levels of m. incognita egg production were compared among commercial acala cultivars 1517-e2, 1517-sr1, 1517-75, 1517-77br, and sj-5, resistant and susceptible standards auburn 634 and m-8 and breeding lines acala 5701-w and n6072 grown for 45 days in the greenhouse. the acala 1517 cultivars all perfor ...	1987	19290288
effect of combining soil solarization with certain nematicides on target and nontarget organisms and plant growth.	field experiments compared pesticidal and plant growth effects of soil solarization, alone and in combination, with overall applications of several nematicides. nematodes, including meloidogyne incognita j2, that were targeted for control were significantly reduced (p < 0.05) by solarization, 1,3-dichloropropene (44 and 132 liter/ha), ethoprop (13.5 kg/ha), metham sodium (64 liter/ha), formaldehyde (111 liter/ha), and by solarization-nematicide combinations. control of pythium ultimum also was o ...	1987	19290287
peanut-cotton rotations for the management of meloidogyne arenaria.	the efficacy of 'deltapine 90' cotton (gossypium hirsutum) in rotation with 'florunner' peanut (arachis hypogaea) for the management of meloidogyne arenaria was studied for 2 years in a field in southeastern alabama. in 1985, m. arenaria juvenile populations in plots with cotton were 98% lower than in plots with peanut. peanut and cotton yields were increased by treatment with aldicarb (3.3 kg a.i./ha in a 20-cm-band) in 1985 but not in 1986. in 1986, peanut yields were highest and m. arenaria j ...	1987	19290174
efficacy of fumigant nematicides to control hoplolaimus columbus on cotton.	four rates of methyl bromide (mbr) (16.8, 33.6, 67,2, and 134.4 kg a.i./ha) and one rate of 1,3-dichloropropene (1,3-d) (28.1 liters a.i./ha) were evaluated over 2 years for control of hoplolaimus columbus on cotton. all nematicide treatments were applied through a tarpless subsoiler-bedder prior to planting cotton, gossypium hirsutum cv. dehapine 90. nematode population densities were monitored before and after treatment, at midseason, and at harvest, and yields were measured at maturity. soil ...	1990	19287786
response of rotylenchulus reniformis to nematicide applications on cotton.	field experiments were conducted to evaluate the efficacy of five nematicides for the management of rotylenchulus reniformis and for their effects on growth, development, and yield of cotton. treatments included 1,3-dichloropropene (1,3-d), fenamiphos, phorate, terbufos, aldicarb, and 1,3-d + aldicarb. average r. reniformis population densities across all treatments increased from 5,284 at 10 days after planting to a final density at harvest of 15,622 nematodes/500 cm(3) soil. the 1,3-d + aldica ...	1990	19287784
chemical control of hoplolaimus columbus on cotton and soybean.	seven experiments, three on soybean and four on cotton, were conducted in hoplolaimus columbus-infested soil in southern north carolina to determine the benefits of chemical soil treatment. locations were selected to give a range of initial population (pi) densities. soil fumigation with 1,3-d and soil treatment with a combination of aldicarb plus fenamiphos (1.1 kg a.i./ha) each provided good control of this nematode. yield responses considered to be significant were achieved only on the high p ...	1990	19287781
crops uncommon to alabama for the management of meloidogyne arenaria in peanut.	in a 1987 field study juveniles of meloidogyne arenaria assayed at the time of peanut harvest were almost undetectable in plots planted with american jointvetch (aeschynomene americana), castor bean (ricinus communis), partridge pea (cassia fasiculata), sesame (sesamum indicum), and cotton (gossypium hirsutum), whereas plots with peanut (arachis hypogaea) averaged 120 juveniles/100 cm(3) soil. application of aldicarb in peanut resulted in an average of 27 juveniles/100 cm(3) soil. in 1988 all pl ...	1989	19287678
phytoparasitic nematode surveys of arkansas cotton fields, 1986-1988.	surveys from 1986 to 1988 identified 22 phytoparasitic nematode species in arkansas cotton fields. meloidogyne spp. was found in ca. 15% of the fields sampled. of these samples ca. 33% were found to have a population density of 106/100 cm(3) of soil or more. rotylenchulus reniformis was found in high numbers (5,000 +/100 cm(3) of soil) in 1% of the fields sampled in 1988. heterodera glycines was found in ca. 22% of the samples, presumably because of past cropping to soybean. other common species ...	1989	19287659
influence of environmental factors on the hatch and survival of meloidogyne incognita.	the influence of soil temperature and moisture on meloidogyne incognita (kofoid and white) chitwood was examined in relation to hatching and survival of second-stage juveniles (j2). nematodes were cultured on cotton (gossypium hirsutum l. cv. acala sj2) under field conditions to provide populations similar to those found in the field in late autumn. egg masses were placed in a temperature range (9-12 c and 21 c), and hatch was measured over a period equivalent to 20 degree days > 10 c (dd10). ha ...	1989	19287616
progression of root-knot nematode symptoms and infection on resistant and susceptible cottons.	progressive development in cotton root morphology of resistant a623 and susceptible m-8 cotton (gossypium hirsutum l.) lines following infection by the root-knot nematode meloidogyne incognita was studied in glass front boxes. symptom development and radicle growth were observed; degree of galling, gall and egg mass diameter, and number of eggs per egg mass were recorded; and root segments were examined histologically. small cracks caused by m. incognita appeared in the root epidermis and cortex ...	1989	19287602
cotton as a rotation crop for the management of meloidogyne arenaria and sclerotium rolfsii in peanut.	the value of cotton (gossypium hirsutum cv. deltapine 90) in rotation with peanut (arachis hypogaea cv. florunner) for the management of root-knot nematode (meloidogyne arenaria) and southern blight (sclerotium rolfsii) was studied for 6 years in a field at the wiregrass substation in southeast alabama. peanut yields following either 1 or 2 years of cotton (c-p and c-c-p, respectively) were higher than those of peanut monoculture without nematicide [p(-)]. at-plant application of aldicarb to con ...	1991	19283179
interaction of meloidogyne incognita and water stress in two cotton cultivars.	a series of controlled-environment experiments were conducted to elucidate the effects of meloidogyne incognita on host physiology and plant-water relations of two cotton (gossypium hirsutum) cultivars that differed in their susceptibility to nematode infection. inoculation of m. incognita-resistant cultivar auburn 634 did not affect growth, stomatal resistance, or components of plant-water potential relative to uninoculated controls. however, nematode infection of the susceptible cultivar stone ...	1991	19283156
maximizing the potential of cropping systems for nematode management.	quantitative techniques were used to analyze and determine optimal potential profitability of 3-year rotations of cotton, gossypium hirsutum cv. coker 315, and soybean, glycine max cv. centennial, with increasing population densities of hoplolaimus columbus. data collected from naturally infested on-farm research plots were combined with economic information to construct a microcomputer spreadsheet analysis of the cropping system. nonlinear mathematical functions were fitted to field data to rep ...	1991	19283139
survey of plant-parasitic nematodes in missouri cotton fields.	during september 1990, 30 cotton fields in each of three missouri counties were surveyed for plant-parasitic nematodes. soil samples for nematode analysis consisted of a composite of 20 cores collected in a zig-zag pattern within a 1-ha block in each field. cores were taken from within weed-free cotton rows. nine genera of plant-parasitic nematodes were found (rotylenchulus, helicotylenchus, hoplolaimus, meloidogyne, paratylenchus, pratylenchus, tylenchorhynchus, heterodera, and trichodorus), an ...	1992	19283062
plant-parasitic nematodes associated with cotton in florida.	a sampling of 15% of the cotton hectarage in each florida county was assayed for nematodes and soil particle components following the 1990 harvest. the distribution of juveniles of meloidogyne spp., which were found in 61% of the 178 fields sampled statewide, was not influenced by soil type. rotylenchulus reniformis was more prevalent in the heavier soils and occurred in 15% of the sampled fields. in fields with concomitant infestations (9% of the sampled fields), densities of root-knot juvenile ...	1994	19279958
rotations with coastal bermudagrass, cotton, and bahiagrass for management of meloidogyne arenaria and southern blight in peanut.	the efficacy of coastal bermudagrass (cynodon dactylon) as a rotation crop for controt of root-knot nematode (meloidogyne arenaria) in 'florunner' peanut (arachis hypogoea) was evaluated in a 3-year field trial. coastal bermudagrass-peanut rotation (cbp) was compared with peanut monoculture without nematicide (p - ) and peanut monoculture with aldicarb (p + ). the performance of cbp was also compared with 'pensacola' bahiagrass (paspalum notatum)-peanut (bp), and 'deltapine 90' cotton (gossypium ...	1994	19279945
influence of rhizoctonia solani on egg hatching and infectivity of rotylenchulus reniformis.	the effects of culture filtrates of rhizoctonia solani and root exudates of r. solani-infected cotton (gossypium hirsutum) seedlings on hatching of eggs and infectivity of females of rotylenchulus reniformis were evaluated in an attempt to account for the enhanced nematode reproduction observed in the presence of this fungus. crude filtrates of r. solani cultures growing over sterile, deionized distilled water did not affect egg hatching. exudates from roots of cotton seedlings increased hatchin ...	1994	19279919
interrelationships of rotylenchulus reniformis with rhizoctonia solani on cotton.	the interrelationships between reniform nematode (rotylenchulus reniformis) and the cotton (gossypium hirsutum) seedling blight fungus (rhizoctonia solani) were studied using three isolates of r. solani, two populations of r. reniformis at multiple inoculum levels, and the cotton cultivars dehapine 90 (dp 90) and dehapine 41 (dp 41). colonization of cotton hypocotyl tissue by r. solani resulted in increases (p </= 0.05) in nematode population densities in soil and in eggs recovered from the root ...	1994	19279918
effects of tropical rotation crops on meloidogyne arenaria population densities and vegetable yields in microplots.	the effects of 12 summer crop rotation treatments on population densities of meloidogyne arenaria race 1 and on yields of subsequent spring vegetable crops were determined in microplots. the crop sequence was: (i) rotation crops during summer 1991 ; (ii) cover crop of rye (secale cereale) during winter 1991-92; (iii) squash (cucurbita pepo) during spring 1992; (iv) rotation crops during summer 1992; (v) rye during winter 1992-93; (vi) eggplant (solanum melongena) during spring 1993. the 12 rotat ...	1994	19279880
meloidogyne incognita and rotylenchulus reniformis and associated soil textures from some cotton production areas of texas.	the incidence of meloidogyne incognita and rotylenchulus reniformis on cotton was determined in 1989-92 from 1,089 soil samples collected from 31 counties that account for nearly 60% of the 2.2 million hectares planted to cotton in texas. meloidogyne incognita was commonly found in the southern high plains and brazos river valley regions of texas (57% and 34%, respectively, of samples) but was found in less than 8% of samples from the central blacklands, coastal bend, low plains, or the upper gu ...	1993	19279860
effects of 1,3-dicliloropropene for meloidogyne incognita management on cotton produced under furrow irrigation.	field trials were conducted during 1990 to evaluate the effects of preplant soil fumigation with 1,3-dichloropropene (1,3-d) on yield and fiber quality of furrow-irrigated cotton cultivars subjected to high population densities of meloidogyne incognita. we measured the responses of eight upland cotton cultivars with different levels of root-knot nematode resistance and compared the responses of upland and pima cottons. reductions in lint weight ranged from 10 to 52% among cultivars grown in soil ...	1993	19279835
damage functions and population changes of hoplolaimus columbus on cotton and soybean.	damage functions and reproductive curves were determined for hoplolaimus columbus on cotton cv. deltapine 90 and soybean cv. gordon over 2 years in field plots in georgia. maximum potential yield suppressions of 18% on cotton and 48% on soybean were predicted with respect to increasing pi. similar functions indicated yield suppressions of 38% on cotton and 30% on soybean with respect to increasing midseason nematode densities (pm). maximum pf predicted by reproductive curves were 123 and 474/100 ...	1993	19279792
effect of tropical rotation crops on meloidogyne incognita and other plant-parasitic nematodes.	in a field experiment conducted on sandy soil in florida during the 1993 season, rotation crops of castor (ricinus communis), velvetbean (mucuna deeringina), 'mississippi silver' cowpea (vigna unguiculata), american jointvetch (aeschynomene americana), 'dehapine 51' cotton (gossypium hirsutum), and 'sx-17' sorghum-sudangrass (sorghum bicolor x s. sudanense) were effective in maintaining low population densities (<12/100 cm(3) soil) of meloidogyne incognita race 1, whereas high population densiti ...	1995	19277319
influence of meloidogyne incognita on the water relations of cotton grown in microplots.	the effects of meloidogyne incognita on the growth and water relations of cotton were evaluated in a 2-year field study. microplots containing methyl bromide-fumigated fine sandy loam soil were infested with the nematode and planted to cotton (gossypium hirsutum l.). treatments included addition of nematodes alone, addition of nematodes plus the insecticide-nematicide aldicarb (1.7 kg/ha), and an untreated control. meloidogyne incognita population densities reached high levels in both treatments ...	1995	19277313
frequency and geographical distribution of plant-parasitic nematodes on cotton in georgia.	a survey was conducted to examine the geographical distribution of plant-parasitic nematodes in georgia cotton fields. a total of 778 fields in 11 georgia counties were sampled from 1 september through 15 december 1995. four nematode genera parasitic on cotton were found in this survey: meloidogyne spp., rotylenchulus sp., hoplolaimus sp., and belonolaimus sp. meloidogyne spp. was present in 9% to 56% of the fields in individual counties. rotylenchulus sp. was found in 10 counties, hoplolaimus s ...	1996	19277192
impact of soil texture on the reproductive and damage potentials of rotylenchulus reniformis and meloidogyne incognita on cotton.	the effects of soil type and initial inoculum density (pi) on the reproductive and damage potentials of meloidogyne incognita and rotylenchulus reniformis on cotton were evaluated in microplot experiments from 1991 to 1993. the equilibrium nematode population density for r. reniformis on cotton was much greater than that of m. incognita, indicating that cotton is a better host for r. reniformis than m. incognita. reproduction of m. incognita was greater in coarse-textured soils than in fine-text ...	1996	19277171
meloidogyne incognita infested soil amended with chicken litter.	the effects of chicken litter on meloidogyne incognita in cotton, gossypium hirsutum cv. dpl50 were determined in field microplots. litters (manure and pine-shaving bedding) from a research facility and a commercial broiler house were used. treatments consisted of 0.25%, 0.5%, and 1% litter by dry weight of soil for each kind of litter. three control treatments consisted of soil not amended with litter, with and without nematodes, and one treatment to which mineral fertilizer was added at a nitr ...	1996	19277155
resistance to meloidogyne incognita race 3 and rotylenchulus reniformis in wild accessions of gossypium hirsutum and g. barbadense from mexico.	forty-six accessions of g. hirsutum and two of g. barbadense were examined for resistance to meloidogyne incognita race 3 and rotylenchulus reniformis in environmental growth chamber experiments, with the objective of finding new sources of resistance. only the g. barbadense accessions, tx-1347 and tx-1348, supported significantly less reproduction by r. reniformis than the susceptible control, deltapine 16 (usda accession sa-1186). however, they were highly susceptible to m. incognita race 3. t ...	1997	19274280
responses of cotton yield and meloidogyne incognita soil populations to soil applications of aldicarb and 1,3-d in florida.	in four tests conducted in loamy-sand soils in northern florida, cotton lint yield increased and post-harvest soil populations of meloidogyne incognita were more effectively suppressed by 1,3-dichloropropene (1,3-d) than aldicarb when both nematicides were evaluated over a range of recommended rates. significant positive relationships existed between lint yield and rates of 1,3-d in three tests, whereas only one significant positive relationship occurred between lint yield and aldicarb rates. yi ...	1998	19274259
the lance nematode, hoplolaimus magnistylus, on cotton in arkansas.	the population density of hoplolaimus magnistylus, a lance nematode, in cotton was determined at planting, mid-season, and harvest during the 1995 and 1996 growing seasons for a poinsett county, arkansas field. nematode populations increased from planting to harvest in 1995 but declined in 1996. application of aldicarb at planting at rates of 0.59 or 0.84 kg a.i./ha did not influence either nematode population density or cotton yield. this study indicates that h. magnistylus is not a serious pes ...	1998	19274251
interaction between meloidogyne incognita and thielaviopsis basicola on cotton (gossypium hirsutum).	the effects of meloidogyne incognita and thielaviopsis basicola on the growth of cotton (gossypium hirsutum) and the effects of t. basicola on m. incognita populations were evaluated in a 2-year study. microplots were infested with m. incognita, t. basicola, or a combination of m. incognita and t. basicola. uninfested plots served as controls both years. seedling survival was decreased by the m. incognita + t. basicola treatment compared to the control. meloidogyne incognita alone and m. incogni ...	1998	19274234