ABSTRACT
The influence of allelic differences of Vrd1 and Ppd-D1 genes on winterhardiness, frost resistance, yield and its components was studied in recombinant-inbred F5 lines of Odesskaya 16/Bezostaya 1. From 9 to 15% differences in the resistance of recombinant-inbred lines were determined by alternative alleles of Vrd1 gene and 10-16% of Ppd-D1 gene. Interaction of vrd1 and Ppd-D1a alleles led to the higher winterhardiness and frost resistance of tillered plants during the winter. At the same time the significant increase of the period to heading, plant height and the tendency of yield reduction were revealed for vrd1 vrd1 Ppd-D1a Ppd-D1a lines when compared to the lines of Vrd1 Vrd1 Ppd-D1a Ppd-D1a genotype.
Subject(s)
Alleles , Genes, Plant , Quantitative Trait, Heritable , Triticum/genetics , Adaptation, Physiological/genetics , Crosses, Genetic , Photoperiod , Recombination, Genetic , Seasons , Triticum/growth & development , UkraineABSTRACT
Resistance to frost, winterhardiness, yield and its components were investigated in recombinant-inbred lines F5 Odesskaya 16/Bezostaya 1 and 61 winter wheat varieties differing on the alleles of Rht8 gene. The absence of influence of gene Rht8 different alleles on the tested traits was shown. The high frequency of distribution of alleles Rht8c in modern wheat varieties developed in Plant Breeding and Genetics Institute is a result of high frequency of use of this allele in genetic pool after 1959.
Subject(s)
Alleles , Genes, Plant , Quantitative Trait, Heritable , Triticum/growth & development , Triticum/genetics , Adaptation, Physiological/genetics , DNA, Plant/genetics , Microsatellite Repeats , Seasons , UkraineABSTRACT
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 Vrdl 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 IA, 6A, or 4B chromosome.
