Publications

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
growth regulator changes in cotton associated with defoliation caused by verticillium albo-atrum.	cotton plants, variety acala 4-42 family 77 (gossypium hirsutum l.,), were stem puncture-inoculated with either a defoliating isolate (t9) or a nondefoliating isolate (ss4) of verticillium albo-atrum (reinke and berth.). as symptoms developed, growth regulators were assayed in diseased plants to discern their importance in the disease syndrome.an avena coleoptile straight growth bioassay demonstrated the presence of several growth-regulatory compounds in cotton tissue extracts. indoleacetic acid ...	1970	16657316
ethylene modification of an auxin pulse in cotton stem sections.	the effect of ethylene on the basipetal movement of indole-3-acetic acid-1-(14)c through cotton stem sections (gossypium hirsutum, l. var. stoneville 213) was studied apart from processes involved in the uptake and exit of auxin by the section. stem sections 60 mm in length were pretreated with ethylene or placed in room air (control) and pulse labeled for 20 min with iaa-1-(14)c. in both the ethylene treated and control sections, the iaa-1-(14)c taken up moved basipetally as a peak of radioacti ...	1969	16657258
abscission: role of abscisic acid.	the effect of abscisic acid on cotton (gossypium hirsutum l. cv. acala 4-42) and bean (phaseolus vulgaris l. cv. red kidney) explants was 2-fold. it increased ethylene production from the explants, which was found to account for some of its ability to accelerate abscission. absci is acid also increased the activity of cellulase. increased synthesis of cellulase was not du to an increase in aging of the explants but rather was an effect of abscisic acid on the processes that lead to cellulase syn ...	1969	16657181
chilling injury and changes in adenosine triphosphate of cotton seedlings.	young gossypium hirsutum l. seedlings chilled at 5 degrees showed a continual decrease in atp concentration with time of chilling. chilled plants returned to optimum conditions were able to restore the initial atp concentration when chilled only 1 day, but not when chilled 2 days. the decrease in atp with chilling was prevented by hardening the seedlings at 15 degrees for 2 days (14-hr-day-length) immediately before chilling. the atp level of hardened plants was higher than of unhardened plants. ...	1969	16657107
abscission: role of cellulase.	cellulase (beta-1,4-glucan-glucanohydrolase ec 3.2.1.4) activity increased during abscission and was localized in the cell separation layer of phaseolus vulgaris l. cv. red kidney (bean), gossypium hirsutum l. cv. acala 4-42 (cotton) and coleus blumei benth. princeton strain (coleus) abscission zone explants. cellulase activity was optimum at ph 7, was reduced by one-half after heating to 55 degrees for 10 min, and was associated with the soluble components of the cell. explants treated with agi ...	1969	16657082
stimulation of ethylene evolution and abscission in cotton by 2-chloroethanephosphonic acid.	ethrel, a mixture of 2-chloroethanephosphonic acid and its ethyl ester, hastens abscission of leaves, debladed petioles, and flower buds of cotton plants (gossypium hirsutum, l.). both young and old leaves abscissed while still green. application of ethrel stimulated evolution of ethylene, and this response preceded abscission. air concentrations of ethylene around enclosed, treated-plants were adequate to produce abscission in plants. non-treated plants defoliated when enclosed with plants spra ...	1969	16657066
strontium mobility in germinating seeds and plants.	the uptake of strontium in the bean plant (phaseolus vulgaris) was linear for the first 34 hr during continuous exposure to radiostrontium. after 35 hr there was a sharp increase in the rate of uptake to 48 hr. radioactivity could be detected in the plant as early as 1 hr after addition of radiostrontium to the growth medium.seventy-five percent of the radiostrontium was located in the seed coat immediately after soaking bean seed in an (89)sr solution. this radioactivity in the seed coat decrea ...	1969	5775205
cotton embryogenesis: the zygote.	the zygote of cotton (gossypium hirsutum) remains undivided for approximately [formula: see text] days following fertilization. the changes which occur during this period can be divided into two stages. during stage 1 the zygote decreases in volume so that its volume becomes one half that of the egg. correlated with this change a number of alterations occur in the endoplasmic reticulum (er) numerous enlargements form; it becomes closely associated with the plasma membrane; and an internal networ ...	1968	24522906
genetical studies concerning the distribution of trichomes on the leaves of gossypium hirsutum l.		1968	17248422
the inheritance of gossypol level in gossypium i. additive, dominance, epistatic, and maternal effects associated with seed gossypol in two varieties of gossypium hirsutum l.		1968	17248408
characteristics of a virescent cotton mutant.	the virescent cotton (gossypium hirsutum) mutant described here differs from normal cultivated cotton by a single mutation in the nucleus. the mutant exhibits nuclear control of chlorophyll and carotenoid development. young leaves are distinctly yellow and become green with age. there is no unusual photometabolism of (14)co(2) or (14)c-acetate in this mutant. it is probable that the nuclear virescent mutation is in a locus concerned with making structural units. the yellow leaves do show a high ...	1968	16656945
cotton embryogenesis: the pollen cytoplasm.	the ultrastructure and composition of cotton (gossypium hirsutum) pollen, exclusive of the wall, was examined immediately before and after germination. the pollen grain before germination consists of two parts: the outer layer and a central core. the outer layer contains large numbers of mitochondria and dictyosomes as well as endoplasmic reticulum (er). the core contains units made of spherical pockets of er which are lined with lipid droplets and filled with small vesicles; the er is rich in p ...	1968	24519656
cotton embryogenesis: the tissues of the stigma and style and their relation to the pollen tube.	the stigma of cotton (gossypium hirsutum) is covered by unicellular hairs. the cytoplasm of these hairs degenerates before the stigma becomes receptive. the vacuole remains intact, but the hair cytoplasm becomes a mass of dark, amorphous material with only a few organelles still being visible. the rest of the stigma consists of thin-walled parenchyma cells with large vacuoles and large amounts of starch. the cells of the style are differentiated into a uniseriate epidermis, vascular tissue, a co ...	1968	24515374
oxidative and phosphorylative activities of mitochondria isolated from cotton hypocotyls.	mitochondria isolated from 2 strains of cotton plant hypocotyls (gossypium hirsutum l. var. rex smooth leaf and rex glandless) were examined for their oxidative phosphorylation activities. bovine serum albumin at a relatively high concentration was essential in the extraction medium for the isolation of oxidatively active mitochondria from both strains of cotton. phosphorylation was obtained only with rex glandless cotton mitochondria. this activity was low in comparison to the mitochondria isol ...	1968	16657001
photosynthesis, transpiration, leaf temperature, and stomatal activity of cotton plants under varying water potentials.	cotton plants, gossypium hirsutum l. were grown in a growth room under incident radiation levels of 65, 35, and 17 langleys per hour to determine the effects of vapor pressure deficits (vpd's) of 2, 9, and 17 mm hg at high soil water potential, and the effects of decreasing soil water potential and reirrigation on transpiration, leaf temperature, stomatal activity, photosynthesis, and respiration at a vpd of 9 mm hg.transpiration was positively correlated with radiation level, air vpd and soil w ...	1967	16656488
cotton embryogenesis: the entrance and discharge of the pollen tube in the embryo sac.	an analysis of the entrance and discharge of the pollen tube into the embryo sac of gossypium hirsutum was made with the light and electron microscopes. the following sequence of events is seen in cotton: 1. one of the two synergids begins to degenerate following pollination but before the pollen tube reaches the embryo sac. this degeneration is marked by the swelling and darkening of the organelle membranes, the collapse of the vacuoles, and the disappearance of the plasma membrane. striking ch ...	1967	24522707
diurnal rhythm of sensitivity of cotton seedlings to herbicides.	the inhibition of growth of cotton seedlings (gossypium hirsutum, var. stardel) varied diurnally to applications of three herbicides [1,1-dimethyl-3-(alpha,alpha,alpha-trifluoro-m-tolyl) urea, 3',4'-dichloro-2-methacrylamide, and ethyl-n,n-dipropylthiocarbamate], but not to a fourth [3-(3,4-dichlorophenyl)-1, 1-dimethylurea]. inhibition was strongest when the plants were treated at about daybreak. the rhythmic response was apparently not endogenously controlled, since most of the diurnal effect ...	1967	6054808
role of iaa-oxidase in abscission control in cotton.	the potential role of indoleactic acid (iaa)-oxidase as an in vivo abscission regulating system in the cotton (gossypium hirsutum l.) cotyledonary explant was investigated. phenols (usually monophenols), which are cofactors of cotton iaa-oxidase in vitro, accelerated abscission. phenols (usually orthodihydroxyphenols), which inhibit cotton iaa-oxidase in vitro, inhibited abscission. inhibition or stimulation of abscission was accomplished by phenols both with and without iaa. results were simila ...	1966	16656432
rna composition in cotton.	nucleotide compositions of soluble (srna), whole-cell, and in one instance particulate and nonparticulate, rna of embryos, cotyledons (dark and light-grown), leaves, stems, and roots of gossypium hirsutum were compared. evidence of substantial differences in the overall compositions of the rnas was not obtained. however, a tendency for some plant parts to differ, particularly in srna composition, and that of the cotyledons (including particulate and nonparticulate rna) to change during the forma ...	1966	16656287
light effects on the nucleic acids of excised cotton cotyledons.	the effects of light and glucose in the nutrient medium on the nucleic acid metabolism of excised 8-day cotton (gossypium hirsutum var. acala 44) cotyledons were determined. the rates of synthesis as affected by light and glucose were determined by brief exposures to c(14)-labeled orotic acid. the nucleic acids were fractionated by homogenizing in tris-hcl buffer and centrifuging to obtain soluble and microsomal rna (20,000 x g supernatant) and a particulate nucleic acid fraction (20,000 x g pre ...	1966	5906375
effect of ethylene on auxin transport.	ethylene was found to have no influence on auxin transport in hypocotyls of helianthus annuus and phaseolus vulgaris; coleoptiles of zea mays; petiole sections of gossypium hirsutum, phaseolus vulgaris, and coleus blumei. in the experiments described here, the tissues were treated with ethylene only during the 3 hours of polar transport. this short treatment is in contrast to the methods of others who found an effect of ethylene on auxin transport when plants grown in ethylene are used as experi ...	1966	5990936
effect of manganese toxicity on the indoleacetic acid oxidase system of cotton.	the effect of substrate manganese on tissue manganese levels and activity of the indoleacetic acid (iaa)-oxidase system of cotton (gossypium hirsutum, l.) was investigated. a sand culture technique was used with 1, 3, 9, 27 and 81 mg manganese (mnso(4)) per liter nutrient solution applied in various experiments.the following relationships held for both long-term (126 days) and short-term (12-14 days) exposures to manganese treatment: a) there was a direct relationship between substrate and tissu ...	1966	16656311
extraction of nucleic acids from lyophilized plant material.	four methods for extracting nucleic acids from lyophilized cotton (gossypium hirsutum l. cv. stoneville 62) leaves and roots were compared. they were based on the use of: (i) hc10(4); (ii) koh; (iii) a mixture of 90% phenol, tris (hydroxymethyl) aminomethane buffer, and sodium lauryl sulfate; and (iv) nacl. (i) extracted large amounts of rna but little dna and extracted much carbohydrate and protein contaminants. (ii) gave a good yield of both rna and dna but extracted such large amounts of cont ...	1966	16656306
effects of ethylene on auxin transport.	the effect of ethylene on the uptake, distribution and polar transport of c(14) from indole-3-acetic acid-2-c(14) and naphthalene acetic acid-1-c(14) in tissue sections was studied. test species were cotton (gossypium hirsutum, l.) and cowpea (vigna sinensis, endl.). generally, incubation of tissue or intact plants with ethylene reduced the degree of polar auxin transport. ethylene inhibited the movement of both auxins in stem tissue and iaa in petiole tissue of cotton. the effect of ethylene on ...	1966	16656230
american cotton rat (sigmodon hispidus) as an experimental host for brugia pahangi.		1965	5857267
the anomalous behavior of the ghost spot of gossypium anomalum in amphidiploid gossypium hirsutum.		1965	17248255
the genetics of flowering response in cotton. v. fruiting behavior of gossypium hirsutum and gossypium barbadense in interspecific hybrids.		1965	17248253
the ultrastructure of cotyledonary tissue from gossypium hirsutum l. seeds.	quiescent cottonseeds stored in a dry, anaerobic situation for over a year have been shown to contain cells whose contents are ultrastructurally similar to those of normal, fully hydrated plant cells. plastids, mitochondria, and nuclei of the cells of cotyledon tissue in dry seeds possess normal-looking double membranes even under conditions of extreme desiccation. previous reports have indicated on the basis of light microscopic work, that the cells of certain dry seeds do not possess nuclear m ...	1965	19866664
tests for the association of marker loci with chromosomes in gossypium hirsutum by the use of aneuploids.		1965	17248254
antiquity of american polyploid cotton.	fragments of a boll of gossypium hirsutum l. from archeological excavations near tehuacán, mexico, prove that this species existed in 5800 b. c. no doubt remains that american tetraploid cotton species originated through natural hiybridization.	1964	17772618
genetic analysis of six primary monosomes and one tertiary monosome in gossypium hirsutum.		1963	17248191
the genetics of flowering response in cotton. iv. quantitative analysis of photoperiodism of texas 86, gossypium hirsutum race latifolium, in a cross with an inbred line of cultivated american upland cotton.		1962	17248135
enhancing linkage-block breakup following interspecific hybridization and backcross transference of genes in gossypium hirsutum l.		1962	14491799
the comparative genetics of gossypium hirsutum l. and the synthetic amphiloid, gossypium arboreum l. x gossypium thurberi tod.		1962	13898581
[on the phenomena of chromosomal segregation observed in the miosis of the synthetic tetraploid (gossypium hirsutum x g. arboreum x g. raimondii) and its descendants].		1961	13751067
the genetics of flowering response in cotton. iii. fruiting behavior of gossypium hirsutum race latifolium in a cross with a variety of cultivated american upland cotton.		1961	17248048
the genetics of flowering response in cotton. i. fruiting behavior of gossypium hirsutum var. marie-galante in a cross with a variety of cultivated american upland cotton.		1957	17247711
viable deficiency-duplications from a translocation in gossypium hirsutum.		1952	17247415
the transmission of marker genes in intraspecific backcrosses of gossypium hirsutum l.		1952	17247397
title: potassium application regulates nitrogen metabolism and osmotic adjustment in cotton (gossypium hirsutum l.) functional leaf under drought stress.	to evaluate the role of potassium (k) in maintaining nitrogen metabolism and osmotic adjustment development of cotton functional leaves to sustain growth under soil drought and rewatering conditions, the plants of two cotton cultivars siza 3 (low-k sensitive) and simian 3 (low-k tolerant), were grown under three different k rates (k0, k1, and k2; 0, 150, and 300kgk2oha(-1), respectively) and exposed to drought stress with 40±5% soil relative water content (srwc). the drought stress was applied a ...	0	28527336