| responses of yearling steers to different stocking rates on a subtropical grass-legume pasture. | despite potential benefits, limitations of individual tropical legumes have restricted development of sustainable grass-legume pastures in tropical and subtropical regions. sowing mixtures of complementary legumes may overcome limitations of individual species. responses of yearling steers grazing a mixture of three tropical legumes with bahiagrass (paspalum notatum flugge) were evaluated at three stocking rates under continuous grazing. carpon desmodium (desmodium heterocarpon [l.] dc.), which ... | 1991 | 1894572 |
| nonpigmented and bacteriochlorophyll-containing bradyrhizobia isolated from aeschynomene indica. | the legume genus aeschynomene is unusual, since many species develop stem nodules and the bradyrhizobia isolated from these nodules produce bacteriochlorophyll (bchl). evidence is presented that the bradyrhizobia of aeschynomene indica have wide distribution throughout the world, since a. indica was nodulated when grown in 58 soils collected in 14 different countries. only 38 of 79 isolates tested synthesized bchl and carotenoids during heterotrophic growth. nine isolates produced bchl constitut ... | 1995 | 16534933 |
| 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 |
| susceptibility of several common subtropical weeds to meloidogyne arenaria, m. incognita, and m. javanica. | experiments were conducted in the greenhouse to assess root galling and egg production of three root-knot nematode species, meloidogyne arenaria, m. incognita, and m. javanica, on several weeds common to florida agricultural land. weeds evaluated were amaranthus retroflexus (redroot pigweed), cyperus esculentus (yellow nutsedge), eleusine indica (goosegrass), portulaca oleracea (common purslane), and solanum americanum (american black nightshade). additionally, although it is recommended as a co ... | 2012 | 23482324 |
| genome analysis of a novel bradyrhizobium sp. doa9 carrying a symbiotic plasmid. | bradyrhizobium sp. doa9 isolated from the legume aeschynomene americana exhibited a broad host range and divergent nodulation (nod) genes compared with other members of the bradyrhizobiaceae. genome analysis of doa9 revealed that its genome comprised a single chromosome of 7.1 mbp and a plasmid of 0.7 mbp. the chromosome showed highest similarity with that of the nod gene-harboring soybean symbiont b. japonicum usda110, whereas the plasmid showed highest similarity with pbbta01 of the nod gene-l ... | 2015 | 25710540 |
| preferential association of endophytic bradyrhizobia with different rice cultivars and its implications for rice endophyte evolution. | plant colonization by bradyrhizobia is found not only in leguminous plants but also in nonleguminous species such as rice. to understand the evolution of the endophytic symbiosis of bradyrhizobia, the effect of the ecosystems of rice plantations on their associations was investigated. samples were collected from various rice (oryza sativa) tissues and crop rotational systems. the rice endophytic bradyrhizobia were isolated on the basis of oligotrophic properties, selective medium, and nodulation ... | 2015 | 25710371 |
| genetic diversity, symbiotic evolution, and proposed infection process of bradyrhizobium strains isolated from root nodules of aeschynomene americana l. in thailand. | the diversity of bacteria nodulating aeschynomene americana l. in thailand was determined from phenotypic characteristics and multilocus sequence analysis of the 16s rrna gene and 3 housekeeping genes (dnak, reca, and glnb). the isolated strains were nonphotosynthetic bacteria and were assigned to the genus bradyrhizobium, in which b. yuanmingense was the dominant species. some of the other species, including b. japonicum, b. liaoningense, and b. canariense, were minor species. these isolated st ... | 2012 | 22752179 |
| divergent nod-containing bradyrhizobium sp. doa9 with a megaplasmid and its host range. | bradyrhizobium sp. doa9, a non-photosynthetic bacterial strain originally isolated from the root nodules of the legume aeschynomene americana, is a divergent nod-containing strain. it exhibits a broad host range, being able to colonize and efficiently nodulate the roots of most plants from the dalbergioid, millettioid, and robinioid tribes (7 species of papilionoideae). in all cases, nodulation was determinate. the morphology and size of doa9 bacteroids isolated from the nodules of various speci ... | 2014 | 25283477 |
| the type iii secretion system (t3ss) is a determinant for rice-endophyte colonization by non-photosynthetic bradyrhizobium. | plant associations by bradyrhizobia have been detected not only in leguminous plants, but also in non-leguminous species including rice. bradyrhizobium sp. sutn9-2 was isolated from aeschynomene americana l., which is a leguminous weed found in the rice fields of thailand. this strain promoted the highest total rice (oryza sativa l. cultivar pathum thani 1) dry weight among the endophytic bradyrhizobial strains tested, and was, thus, employed for the further characterization of rice-bradyrhizobi ... | 2015 | 26582551 |
| 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 |
| host suitability of potential cover crops for root-knot nematodes. | several potential cover crops were evaluated for their susceptibility to meloidogyne arenaria race 1, m. incognita race 1, and m. javanica in a series of five greenhouse experiments. no galls or egg masses were observed on roots of castor (ricinus communis), cowpea (vigna unguiculata cv. iron clay), crotalaria (crotalaria spectabilis), or american jointvetch (aeschynomene americana). occasional egg masses (rating </=1.0 on 0-5 scale) were observed on marigold (tagetes minuta) in one test with m. ... | 1999 | 19270926 |
| tropical rotation crops influence nematode densities and vegetable yields. | the effects of eight summer rotation crops on nematode densities and yields of subsequent spring vegetable crops were determined in field studies conducted in north florida from 1991 to 1993. the crop sequence was as follows: (i) rotation crops during summer 1991; (ii) cover crop of rye (secale cereale) during winter 1991-92; (iii) 'lemondrop l' squash (cucurbita pepo) during spring 1992; (iv) rotation crops during summer 1992; (v) rye during winter 1992-93; (vi) 'classic' eggplant (solanum melo ... | 1994 | 19279897 |
| 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 |
| 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 |
| interactions between six warm-season legumes and three species of root-knot nematodes. | | 1985 | 19294109 |
| ecological interpretations of the leaf anatomy of amphibious species of aeschynomene l. (leguminosae - papilionoideae). | we present the leaf anatomy of seven amphibious species of aeschynomene l. (papilionoideae, leguminosae), interpreting their structures and ecological functions, and also, providing information on which their taxonomy can be based, especially of morphologically similar species. we evaluated aeschynomene americana, a. ciliata, a. evenia, a. denticulata, a. fluminensis, a. rudis and a. sensitiva. the anatomy corroborates the separation of the series americanae, fluminenses, indicae and sensitivae, ... | 2014 | 25055085 |
| selecting plants and nitrogen rates to vegetate crude-oil-contaminated soil. | phytoremediation can be effective for remediating contaminated soils in situ and generally requires the addition of nitrogen (n) to increase plant growth. our research objectives were to evaluate seedling emergence and survival of plant species and to determine the effects of n additions on plant growth in crude-oil-contaminated soil. from a preliminary survival study, three warm-season grasses--pearlmillet (pennisetum glaucum [l.] r. br.), sudangrass (sorghum sudanense [piper] stapf [piper]), a ... | 2006 | 17305303 |
| inheritance of photoperiod-induced flowering in three photoperiodic lines of aeschynomene americana l. | induction of flowering by photoperiod was studied in the parental, f1, f2, and reciprocal backcross generations of crosses between three photoperiod-responsive aeschynomene americana l. lines. generation means appeared additive. analysis with mather and jinks' scaling tests showed little or no epistasis and indicated that an additive-dominance model was adequate. partitioning components of variation revealed that nearly all variation was additive genetic with dominance and environmental variatio ... | 1989 | 24226013 |