Diversity of Ppd-1 genotypes of spring and winter bread wheat (Triticum aestivum L.) of Ukraine

Ancient and modern 183 varieties of winter 23 spring types development bread wheat (Triticum aestivum L.) selected Ukrainian state institutions private companies are characterized by alleles Ppd-D1, Ppd-B1, Ppd-A1 genes. Allele-specific molecular markers, proposed in the scientific literature, were used to identify carriers Ppd-D1a, Ppd-D1b, Ppd-D1c, Ppd-D1d, Ppd-B1a, Ppd-B1c, Ppd-A1b alleles. According results PCR analysis, most widespread among studied cultivars was observed dominant allele Ppd-D1a (91.9 %) with a range from 80.0 % sampling Northeast (Kharkiv, Sumy) 95.0 southern (Odesa, Kherson), – recessive Ppd-D1c (43.5 %). The share various Ppd-D1 gene is 73.9 %, 8.1 and, except for Borovitsa Talisman consists created late 60 early 70 years last century. frequencies Ppd-B1a Ppd-B1c quite small. found only three varieties, 5 Struna Mironivska, latter cultivar, all cases together allele. present sorts. Seven different homozygous Ppd-1 genotypes have been determined cultivars. Samples differ significantly quantity frequency specific genotypes. presence monogenic or control traits digenic has marked wheat, as well varieties. In genes several times higher (69.6 than varieties; conversely, samples more Such differences genotype due timing sowing duration natural day at latitude growing region during season