Benefits Of Soybean Breeding Programs Essay - 853 Words

Exotic soybean germplasm that has the potential to significantly increase seed yield has been evaluated in several previous studies. Three high yielding germplasm lines that contain exotic ancestry have been released by USDA-ARS and the Illinois Agricultural Experiment Station. The released lines LG00-3372 from the cross PI 561319A Ãâ€" PI 574477 (Nelson and Johnson 2011a), LG04-6000 from the cross PI 436682 Ãâ€" Lawrence (Nelson and Johnson 2012), and LG06-5798 from LG00-3372 x LD00-3309 (Nelson et al. 2013) yielded significantly (P=0.05) more than the highest yielding check cultivars in field tests. The releases of these germplasm lines provide evidence that exotic germplasm can be used as a parent for soybean breeding programs to provide new genetic diversity as well as to improve seed yield of US soybean cultivars. Advances in biotechnology and statistical programs have made it more efficient to map the locations of genes and QTL. However, complex quantitative traits including seed yield are often difficult to identify and their use in soybean breeding programs can be complicated by epistasis, QTL by genetic background interactions, and QTL by environment interactions (Bernardo 2008; Yang et al. 2008). Strong interactions between QTL as well as between QTL and environments for seed yield have been reported in soybean (Kim et al. 2012b; Lark et al. 1995). The objectives of this study were to map QTL and to identify effects of the QTL and/or epistasis on important agronomicShow MoreRelatedFirst Generation Sequencing ( Ngs ) Technologies792 Words   |  4 Pagespractical approaches for crop breeding; 1) whole-genome resequencing (WGR), 2) genotyping-by-sequencing (GBS), 3) genome wide association studies (GWAS), and 4) genome editing technologies (GET). The cost and time for sequencing and genoty ping have continuously and dramatically decreased by the developments of diverse high-throughput platforms. 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It’s hard to believe that consumers