Chromosomal location of genes for vernalization requirement duration (Vrd) in winter bread wheat

In this study, we carried out monosomic analysis of two isogenic lines of cultivar Mironovskaya 808, monogenically dominant for genes Vrd1 and Vrd2 reducing the cultivar vernalization requirement duration from 50 to respectively 35 and 45 days, as well as analysis of substitution lines Cappelle Desperez/Bezostaya 1. Gene Vrd1 is localized on chromosome 4A; Vrd2, on chromosome 5D. The third gene, which is not allelic to the former two, is present in cultivar Cappelle Desperez on either the 1A, 6A, or 4B chromosome.