soybean Articles
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Sources of soybean rust resistance challenged with single-spored isolates of phakopsora pachyrhizi
Soybean rust, caused by the fungus Phakopsora pachyrhizi Syd., is a potentially devastating disease that can cause significant yield losses. Resistance in soybean [Glycine max (L.) Merr.] germplasm, both qualitative and quantitative, may be effective in providing at least partial control of soybean rust. A number of soybean genotypes have resistance to soybean rust, but few of these have been ...
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Mutations in a Δ 9–Stearoyl-ACP-Desaturase gene are associated with enhanced stearic acid levels in soybean seeds
Stearic acid (18:0) is typically a minor component of soybean [Glycine max (L.) Merr.] oil, accounting for only 2 to 4% of the total fatty acid content. Increasing stearic acid levels of soybean oil would lead to enhanced oxidative stability, potentially reducing the need for hydrogenation, a process leading to the formation of undesirable trans fatty acids. Although mutagenesis strategies have ...
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Genetic diversity in a soybean collection
Soybean [Glycine max (L.) Merr.] was domesticated in China, and cultivated landraces were initially distributed throughout Asia and more recently extended to Europe and America. Previous studies of genetic diversity suggest a strong genetic bottleneck between Asian and North American soybean genetic pools. However, little is known about the potentially useful genetic diversity present in European ...
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Genetic variability of transpiration response to vapor pressure deficit among soybean cultivars
Simulation studies have demonstrated that the existence of a limitation on maximum transpiration rate (TR) at high air vapor pressure deficit (VPD) in water-limited conditions could result in significant yield increases. A genotype of soybean [Glycine max (L.) Merr.] (PI 416937) has been identified both with a slow-wilting phenotype in the field and limited TR above a VPD breakpoint (BP) of 2 ...
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Identification of QTL for resistance to Sclerotinia stem rot in soybean plant introduction 194639
Sclerotinia stem rot of soybean [Glycine max (L.) Merr.], caused by Sclerotinia sclerotiorum (Lib.) de Bary, is a difficult disease to manage, although some gains have been made through breeding for quantitative resistance. The objective of the present study was to map quantitative trait loci (QTL) controlling partial resistance to Sclerotinia stem rot from the soybean plant introduction (PI) ...
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Genetic basis of the low-Phytate trait in the soybean line CX1834
The low-phytate (LP) trait in plant seeds offers important nutritional and environmental benefits for food and feed uses. Mutants with reduced phytate content are commonly produced by chemical mutagenesis, as is the case for soybean [Glycine max (L.) Merr.] line CX1834. Quantitative trait loci (QTL) for LP in CX1834 have previously been reported, however the genetic basis for this trait has not ...
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Confirmation of molecular markers and agronomic traits associated with seed phytate content in two soybean RIL populations
The concentration of phytate is an important consideration when analyzing feed grain for livestock. Simple sequence repeat markers Satt237 and Satt561 were found to be linked to quantitative trait loci (QTLs) for phytate concentration in soybean [Glycine max (L.) Merr.] seed. Previous research also established a significant correlation between seed inorganic phosphorus (Pi) and seed phytate. The ...
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Accumulation of soluble carbohydrates during seed development and maturation of low-raffinose, low-stachyose soybean
Soybean [Glycine max (L.) Merr.] seeds accumulate sucrose, raffinose family oligosaccharides (RFO), phytin, and small amounts of galactopinitols and fagopyritols during normal seed maturation. RFO and phytin are indigestible by non-ruminant animals and contribute to decreased feed efficiency, reduced mineral adsorption, and phosphorous pollution in manure. Low raffinose, stachyose, and phytin ...
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Identification of candidate gene mutation associated with low Stachyose Phenotype in soybean line PI200508
To investigate the genetic factors underlying a major quantitative trait locus (QTL) contributing to low seed stachyose content in two separate populations derived from soybean [Glycine max (L.) Merr.] line PI200508, the recently released ‘Williams 82’ whole genome shotgun (WGS) sequence was exploited for candidate gene discovery. The physical interval containing a low stachyose QTL from PI200508 ...
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