Influence of alleles of the Ppd-D1 gene and different duration of requirement in yarovization on economic valuable signs of winter bread wheat

Aim. To determine the influence of alternative alleles Ppd-D1 gene and phenotypic differences in duration need for vernalization their interaction on earing time grain yield recombinant lines bread winter wheat. Methods. Growing plants field vegetation site, PCR with specific primers Ppd-B1c genes, phenological observations, artificial vernalization, statistical analysis. Results. 136 F7 from crossing [F1 (Chaika//Cappelle Desperez/2В Chinese Spring) / Kharkivska 81] F2 Obryi identified by gene, characterized period to earing, plant height, weight 1000 grains harvest. Conclusions. Genotypes presence Ppd-D1a allele eared 2.9 days earlier than those Ppd-B1b allele, a 30-day – one day 40-day vernalization. Different combinations characteristics regarding significantly influenced before heading grains. Among that exceeded control varieties Antonivka Kuyalnik terms yield, different combination two traits were found, but share 30 daily was greater they formed largest yield.