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Effects of Selective Genetic Introgression from Wild Soybean to Soybean
Author(s) -
Akpertey Abraham,
Belaffif Mohammad,
Graef George L.,
Rouf Mian M. A.,
Grover Shan J.,
Cregan Perry B.,
Hudson Matthew E.,
Diers Brian W.,
Nelson Randall L.
Publication year - 2014
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2014.03.0189
Subject(s) - biology , germplasm , introgression , backcrossing , glycine soja , breeding program , cultivar , population , gene pool , plant breeding , inbred strain , selection (genetic algorithm) , agronomy , genetics , glycine , gene , genetic diversity , demography , amino acid , artificial intelligence , sociology , computer science
Soybean [ Glycine max (L.) Merr.] breeding in the United States currently relies on a narrow genetic base. For decades, but more intensely in recent years, efforts have been made to incorporate exotic soybean germplasm into the breeding pool. Although wild soybean ( G. soja Seib. and Zucc.) is genetically much more diverse than soybean, much less effort has been devoted to utilizing wild soybean in soybean breeding. The objectives of this research were to identify high‐yielding lines derived from crosses between five wild soybean accessions and soybean cultivars and determine if there are differences in the genetic contributions of each wild soybean parent. Each wild soybean was crossed to Williams 82, and the F 1 plants were backcrossed to Williams 82 to create the backcross generation (BC 1 ) lines. The BC 2 parent lines were developed through family selection and backcrossed to Williams 82, IA2052, IA3023, or LN97–15076. Family selection beginning in the F 2 generation was used to develop lines from plant introduction (PI) 507807 and PI 549046. The lines from PI 479767 and PI 483461 were selected by early generation testing through yield testing F 2 lines in the F 3 and F 4 generations. The lines derived from PI 65549 were developed from a single seed descent (SSD) population. Field evaluation of the derived lines identified lines that are not significantly different from their recurrent parents. Using single nucleotide polymorphism (SNP) markers, we found unique contributions being made by the G. soja parents. Despite intense selection pressure to recover good agronomic types, an average of 13% of SNP alleles in the derived lines came from the G. soja parents.