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The majority of soybean cyst nematode (Heterodera glycines Ichinohe, SCN) resistant cultivars available to growers in the northern USA have resistance originating from PI 88788, which is losing its effectiveness to shifting SCN populations. The novel resistance quantitative trait loci (QTL) cqSCN-006 and cqSCN-007 were mapped from Glycine soja Sieb. and Zucc. plant introduction 468916. The objective...
Illustrating the consistency and pleiotropic effects of a quantitative trait locus (QTL) across multi-locations is important for breeding. In this study, a QTL qPH_6_1, underlying soybean plant height, was positioned on chromosome 6 using a BC2F5 family, which was developed using ‘Jidou 12’ as recurrent parent, and ‘Xinbada 2’ as donor parent. The residual heterozygous lines (RHLs) derived from BC...
Soybean is a primary source of plant oil and protein and has a high nutritional value. Plant height (PH) and flowering time (FT) are two important agronomic traits in breeding programs for soybean. In this study, we mapped QTLs associated with PH and FT in three environments using a population with determinate growth including 236 recombinant inbred lines (NJZY-RIL) derived from a cross between two...
In soybean, the number of branches directly affects total pod number per plant. In this study, we sought to identify QTLs and candidate genes associated with branching in 200 F6 recombinant inbred lines derived from a cross between Jiyu69 and SS0404-T5-76, which exhibit significant differences in branch number. Using a high-resolution genetic map constructed using the BARCSoySNP6K chip, we detected...
Soybean scientists in China have tried to utilize heterosis for yield enhancement. A number of cytoplasmic-nuclear male-sterile (CMS) lines, their maintainers and restorers were developed, but the commercialized hybrid seed production is still a bottleneck. Five soybean CMS lines with their maintainers and restorers were studied for the sufficiency of viable and effective pollens from maintainers/restorers,...
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