HEADING TIME OF SUBSTITUTION AND NEAR-ISOGENIC LINES OF COMMON WHEAT WITH DOMINANT ALLELES Vrn-B1a AND Vrn-B1c
Abstract
Heading time of substitution and near-isogenic lines (NILs) with Vrn-B1a and Vrn-B1c alleles was studied without vernalization and after 30-day vernalization in a greenhouse and in the field. Without vernalization, both in a greenhouse and in the field, plants with the Vrn-B1c allele headed several days earlier than plants with Vrn-B1a. However, plants with Vrn-B1a responded to vernalization by more pronounced heading acceleration than Vrn-B1c plants. The weak Vrn-B1a allele dominated in F1 hybrids from the cross between two NILs with the Vrn-B1c and Vrn-B1a alleles. These observations confirm the multiple allelism of the Vrn-B1 gene, responsible for the spring growth habit in wheat.
About the Authors
M. V. Emtseva
Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
T. T. Efremova
Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
V. S. Arbuzova
Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
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