Genetic separation of southern and northern soybean breeding programs in North America and their associated allelic variation at four maturity loci.

ABSTRACT: North American soybean breeders have successfully developed a large number of elite cultivars with diverse maturity groups (MG) from a small number of ancestral landraces. To understand molecular and genetic basis underlying the large variation in their maturity and flowering times, we integrated pedigree and maturity data of 166 cultivars representing North American soybean breeding. Network analysis and visualization of their pedigree relationships revealed a clear separation of southern and northern soybean breeding programs, suggesting that little genetic exchange occurred between northern (MG 0-IV) and southern cultivars (MG V-VIII). We also analyzed the transcript sequence and expression levels of four major maturity genes (E1 to E4) and revealed their allelic variants

SUBMITTER: Wolfgang G 

PROVIDER: S-EPMC5226990 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature