Prevalence of VRN1 Locus Alleles among Spring Common Wheat Cultivars Cultivated in Western Siberia
Efremova, T.T.; Chumanova, E.V.; Trubacheeva, N.V.; Arbuzova, V.S.; Belan, I.A.; Pershina, L.A.
Genetika 52(2): 170-178
2016
ISSN/ISBN: 0016-6758 PMID: 27215031 Document Number: 686283
With the use of allele-specific primers developed for the VRN1 loci, the allelic diversity of the VRN-A1, VRN-B1, and VRN-D1 genes was studied in 148 spring common wheat cultivars cultivated under the conditions of Western Siberia. It was demonstrated that modern Western Siberian cultivars have the VRN-A1a allele, which is widely distributed in the world (alone or in combination with the VRN-B1a and VRN-B1c alleles). It was established that the main contribution in acceleration of the.seedling-heading time is determined by a dominant VRN-A1a allele, while the VRN-A1b allele, on the contrary, determines later plant heading. Cultivars that have the VRN-A1b allele in the genotype are found with a frequency of 8%. It was shown that cultivars with different allele combinations of two dominant genes (VRN-A1a + VRN-B1c and VRN-A1a + VRN-B1a) are characterized by earlier heading and maturing.