Features of Ppd-B1 expression regulation and their impact on the flowering time of wheat near-isogenic lines

摘要

BackgroundPhotoperiod insensitive Ppd-1a alleles determine early flowering of wheat. Increased expression of homoeologous Ppd-D1a and Ppd-A1a result from deletions in the promoter region, and elevated expression of Ppd-B1a is determined by an increased copy number.