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  • Articles  (15)
  • Other Sources
  • Glycine max  (15)
  • 1985-1989  (8)
  • 1980-1984  (7)
  • 1965-1969
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (15)
  • Education
  • Mathematics
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  • Articles  (15)
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  • 1
    Electronic Resource
    Electronic Resource
    Characterization ofR. fredii QB1130, a strain effective on commercial soybean cultivars (1987)
    Springer
    Plant and soil 99 (1987), S. 441-446 
    Details
    ISSN: 1573-5036
    Keywords: Bradyrhizobium japonicum ; C3A fast-growing rhizobia ; Glycine max ; Rhizobium fredii ; B1130 ; USDA191
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two rhizobial strains (QB1130 and C3A) from northeast China were identified asRhizobium fredii on the basis of growth rate, media acidification and growth on a wide range of carbon substrates. The strains were shown to be distinct from USDA 191 on the basis of plasmid number and size. Bothnif and commonnod genes were located on the 295 kb plasmid of strains QB1130 and USDA 191, while onlynif genes were identified on this plasmid in C3A. When used to inoculate four commercial soybean (Glycine max) cultivars, one of the strains (C3A) was found to be ineffective, while the other (QB1130) was at least as effective as USDA 191, a strain ofR. fredii reported to be widely effective on North American cultivars of soybean. Further, QB1130 was capable of more effective nodulation of cowpea or the uncultivated soybean line, Peking, than either USDA 191 or the slow-growingBradyrhizobium japonicum USDA 16. Strain QB1130 should be useful for studies directed at improving symbiotic performance in soybean, or for studies of the comparative physiology and genetics of FG and SG strains on a single host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370889
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  • 2
    Electronic Resource
    Electronic Resource
    Interspecific hybridisation of soybeans and perennial Glycine species indigenous to Australia via embryo culture (1982)
    Springer
    Euphytica 31 (1982), S. 715-724 
    Details
    ISSN: 1573-5060
    Keywords: Perennial Glycine species ; interspecific hybridisation ; embryo culture ; Glycine max ; soybeans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Five sterile hybrids (2n=59) between a synthetic amphiploid of Glycine tomentella (2n=38) and G. caneseens (2n=40) as female and soybean cultivars Lincoln and Hark as males have been produced by embryo or ovule culture using transplanted endosperm. The hybrid plants are twining perennials like the female parent but possess a number of morphological characters which reflect the presence of the soybean genome. Indophenol oxidase isozymes from leaf extracts also provide good evidence of the hybrid nature of the cultured plants. These hybrids open the way for the exploitation of the diverse germplasm resources of the perennial Glycine species in soybean breeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039210
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic variation in soybean (Glycine max (L.) Merril) for cookability and water absorption during cooking (1984)
    Springer
    Euphytica 33 (1984), S. 859-864 
    Details
    ISSN: 1573-5060
    Keywords: Glycine max ; soybean ; cookability ; water absorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Improvement of cookability is an important objective in breeding of food legumes. The present study was undertaken to investigate variation in cookability in soybean. Genetic variation was observed among lines from two crosses. Absence of associations between cookability and protein content, oil content and grain yield indicate that selection for cookability can be achieved without adversely affecting the expression of these characters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021913
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  • 4
    Electronic Resource
    Electronic Resource
    Multivariate analysis of a collection of soybean cultivars for southwestern Spain (1985)
    Springer
    Euphytica 34 (1985), S. 113-123 
    Details
    ISSN: 1573-5060
    Keywords: Glycine max ; soybean ; variation ; varietal stability ; multivariate techniques ; clustering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Multivariate techniques were used to classify 125 soybean lines into clusters. Late maturing varieties belonging to maturity group III showed the best adaptation to the ecological conditions of the area when soybeans were sown at early planting dates. A group of experimental lines, the majority of which had semideterminate stem termination with small leaflets and intermediate maturity, were highly productive when grown as a second crop. Some lines of other groups were identified as likely parents for use in a breeding program to improve agronomic characteristics. The identified groups were quite stable in their performance through changes in environmental conditions (years and planting dates). The analyses indicated that some intercorrelated traits can be omitted in future line evaluation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022870
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  • 5
    Electronic Resource
    Electronic Resource
    N2 fixation in Thai soybeans: Effect of tillage and inoculation on15N-determined N2 fixation in recommended cultivars and advanced breeding lines (1988)
    Springer
    Plant and soil 112 (1988), S. 183-193 
    Details
    ISSN: 1573-5036
    Keywords: 15N isotope dilution ; Bradyrhizobium japonicum ; Glycine max
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The practice of seeding soybeans following paddy rice in Thailand has encountered difficulties in seedling germination, nodulation and crop establishment. This research project evaluated the choice of a non-fixing control to quantify N2 fixation by15N isotope dilution, and the effect of tillage regime, soybean cultivar, strain ofBradyrhizobium japonicum and P fertilization on yield and N2 fixation after paddy rice in northern and central Thailand. Japanese non-nodulating lines Tol-0 and A62-2 were the most appropriatecontrol plants for15N isotope dilution for Thai soybeans in these soils which contained indigenous rhizobia. Cereals such as maize, sorghum and barley were also appropriate controls at some sites. The choice of the appropriate non-fixing control plant for the15N isotope dilution technique remains a dilemma and no alternative exists other than to use several possible controls with each experiment. Acetylene reduction assay (ARA) proved of little value for screening varieties on their N2 fixing capacity. The recommended Thai soybean cultivars (SJ1, 2, 4, 5) and an advanced line 16–4 differed little in their ability to support N2 fixation or yield, possibly due to similar breeding ancestry. The ten AVRDC (ASET) lines showed considerable genotypic control in their ability to utilize their three available N sources (soil, fertilizer, atmosphere) and to translate them into yields. None of these lines were consistently superior to Thai cultivars SJ4 or SJ5 although ASET lines 129, 209 and 217 showed considerable promise. Neither recommended Thai or ASET cultivars were affected by tillage regime. Zero tillage resulted in superior N2 fixation and yield at two sites but conventional tillage was superior at another site. Soybean cultivars grown in Thailand were well adapted to zero tillage. Levels of N2 fixation were similar to world figures, averaging more than 100 kg N ha−1 and supplying over 50% of the plant's N yield. However, seed yields seldom exceeded 2 t ha−1, well below yields for temperately-grown soybeans. It is not clear why Thai soybeans support N2 fixation, but do not translate this into higher seed yields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02139994
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  • 6
    Electronic Resource
    Electronic Resource
    Mineral N effects on cowpea and soybean crops in a Nigerian soil (1982)
    Springer
    Plant and soil 68 (1982), S. 171-181 
    Details
    ISSN: 1573-5036
    Keywords: Acetylene reduction ; Cowpea ; Fertilizer-N ; Glycine max ; Nitrogen-15 ; Nodule ; Soybean ; Vigna unguiculata ; Yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a Nigerian soil depleted in available N, fertilizer-N enriched in15N was applied at 25 and 100 kg N/ha to crops of four cowpea and two soybean cultivars. Soil-N availability was estimated with three non-fixing crops, non-nodulating soybean, maize and celosia. With sequential harvests we examined the development of the fixing crops, as well as their nodulation profiles and acetylene reduction activities, and the patterns obtained were correlated with uptake of mineral-N. At low levels of mineral-N, excellent nodulation (up to 580 mg dry weight/plant) and very high acetylene reduction activities (up to 208 μmoles/plant/h) were recorded. Although fertilizer-N utilizations were low, 12% and 28% at 25 and 100 kg N/ha respectively, the lower application had a transient adverse effect on nodule development and the higher application had a long-term adverse effect on nodule formation, nodule development and acetylene reduction activity. Cowpea nodule mass reached maximum levels at early pod-fill except at 100 kg N/ha at which it continued to increase into late podfill. In contrast, soybean nodulation did not peak at any level of N but increased into late pod-fill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02373703
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  • 7
    Electronic Resource
    Electronic Resource
    Relationship of fluorescent intensity to ion uptake and elongation rates of soybean roots (1983)
    Springer
    Plant and soil 72 (1983), S. 127-134 
    Details
    ISSN: 1573-5036
    Keywords: Fluorescence ; Glycine max ; Nutrient absorption ; Root growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The relationship between the fluorescent intensity of individual soybeanGlycine max (L.) Merr.} roots or root segments and their nutrient absorption capacity or elongation rate was investigated. Data are reported for the short-term (30 sec) absorption of rubidium, phosphate, and iron by roots of soybean plants which had been cultured in a soil solution system. Results indicate that the rates of absorption of Fe, was directly related to the fluorescent intensity, with the most rapid absorption per unit of root length or surface area occuring in regions of most intense fluorescence. Elongation rate was positively correlated to the intensity of root fluorescence. These relationships should be useful for estimating root elongation rates in soil systems and for evaluating the distribution of growth rates and nutrient absorption activities within a crop root system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185102
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  • 8
    Electronic Resource
    Electronic Resource
    Physiological and symbiotic characteristics of fast-growingRhizobium japonicum (1984)
    Springer
    Plant and soil 77 (1984), S. 3-14 
    Details
    ISSN: 1573-5036
    Keywords: Asian-type soybean ; Fast-growingRhizobium japonicum ; Glycine max ; Nitrogen fixation ; Rhizobium japonicum ; Rhizobium physiology ; Root nodule
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Physiological and symbiotic characteristics were identified in fast-growing (FG)Rhizobium japonicum. Carbon nutritional patterns linked these rhizobia to other FG rhizobia. They were able to use hexoses, pentoses, disaccharides, trioses, and organic acids for growth, but they were unable to use dulcitol or citrate. These rhizobia produced acid with all carbon sources except intermediates of the Krebs cycle. FGR. japonicum showed no vitamin requirements and were tolerant to 1% NaCl but not to 2%. They nodulated cowpea, pigeon pea, and mung bean but not peanut. Effective, nitrogen-fixing symbioses were observed only with cowpea and pigeon pea. In addition, FGR. japonicum formed effective symbioses with Asian-type soybeans. We concluded that although the physiological characteristics of FGR. japonicum were similar to other FG rhizobia, their symbiotic properties were similar to slow-growing rhizobia of the cowpea miscellany.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182807
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  • 9
    Electronic Resource
    Electronic Resource
    Mineral N effects on cowpea and soybean crops in a Nigerian soil (1982)
    Springer
    Plant and soil 68 (1982), S. 183-192 
    Details
    ISSN: 1573-5036
    Keywords: ‘AN’-value ; Cowpea ; Difference method ; Fertilizer-N ; Glycine max ; Nitrogen-15 ; N-balance ; N2-fixation ; Soybean ; Vigna unguiculata
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The amounts of N fixed in the field in Nigeria by four cowpea and two soybean cultivars were determined at different levels of available N by the difference and the ‘AN’-value methods using non-nodulating soybean, maize and celosia as non-fixing controls. No significant differences were found between the two methods or with different controls. Grain removal and return of residues to the soil were measured and net soil-N changes calculated. N-benefits accrued from two of the cowpea cultivars when grown at low mineral-N levels, but with higher mineral-N availability, no cultivar contributed N because of inhibition of nodulation and lowered N2-fixation. Although the soybeans fixed more N than the cowpeas they caused greater net N-depletions because they sequestered a greater fraction of N in the grain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02373704
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  • 10
    Electronic Resource
    Electronic Resource
    Incompletely dominant single resistance gene for peanut stripe virus in soybean line AGS 129 (1989)
    Springer
    Euphytica 40 (1989), S. 193-196 
    Details
    ISSN: 1573-5060
    Keywords: Glycine max ; soybean ; genetics ; peanut stripe virus ; resistance ; incomplete dominance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Inheritance of resistance to a soybean isolate of peanut stripe virus (PStV-strain PN) was studied in three soybean varieties, AGS 129, Ankur, and PI 230971. Genetic analysis was based on necrotic, mosaic and symptomless reactions in inoculated soybeans. A single incompletely dominant gene in AGS 129 was found to confer the resistance to PStV and was tentatively designated as Pst. The homozygous parent AGS 129, possessing the genotype Pst Pst, was immune while Ankur and PI 230971, with a genotype of pst pst, were susceptible showing mosaic symptoms. The heterozygous genotype Pst pst resulting from the cross of either Ankur or PI 230971 with AGS 129 reacted with necrosis, distinctly different from either of the homozygous genotypes. This genotypic effect was confirmed through the phenotypic segregation in BC, F2, and F3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024511
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