Evolution of the perennial soybean polyploid complex (Glycine subgenus Glycine): a study of contrasts

摘要: Glycine subgenus Glycine, the sister group to cultivated soybean and its progenitor, have received considerable study over several decades. The combination of biosystematic data an extensive germplasm collection has provided a strong foundation for molecular systematic studies in group, including those on allopolyploids. These shown that various polyploid taxa known from are all part single large allopolyploid complex, linked by shared diploid genomes. Many elements complex arisen recently, most show evidence recurrent origins. However, there also many dissimilarities among even closely related polyploids. Polyploids differ one another such ways as number origins, amount allelic diversity harboured at different loci, bidirectional vs. unidirectional retention ribosomal gene homoeologues, success measured geographical range abundance, patterns expression.