The core collection of red-seeded winter hexaploid triticale with different pre-harvest sprouting (PHS) resistance has been evaluated for the allelic structure of the gene <i>VIVIPAROUS</i>-1<i>B</i> (<i>Vp</i>-1<i>B</i>) with STS molecular marker. The discovered structure of the collection was as follows: 50.0% and 41.7% of the collection carries <i>Vp</i>-1<i>Bа</i> and <i>Vp</i>-1<i>Bc</i> alleles, respectively, while 8,3% possesses both of them. As a result of the seed color estimation, the collection has been divided into two groups: with dark red seeds and light red seeds. The allele <i>Vp</i>-1<i>Bc</i> has appeared to be associated with PHS resistance while <i>Vp</i>-1<i>Ba</i> with PHS susceptibility in the triticale accessions with light red seeds only. The influence of the seed color and allelic state of <i>Vp</i>-1<i>B</i> on PHS resistance in triticale is discussed
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