Developmental traits affecting low-temperature tolerance response in near-isogenic lines for the Vernalization locus Vrn-A1 in wheat (Triticum aestivum L. em Thell).

ABSTRACT: Investigation of low-temperature (LT) tolerance in cereals has commonly led to the region of the vyn-A1 vernalization gene or its homologue in related genomes. Two cultivars, one a non-hardy spring wheat and one a very cold-hardy winter wheat, whose growth habits are determined by the Vrn-A1 (spring habit) and vrn-A1 (winter habit) alleles, were chosen to produce reciprocal near-isogenic lines (NILs). These lines were then used to determine the relationship between rate of phenological development and the degree and duration of LT tolerance gene expression. Each allele was isolated in the genetic backgrounds of the non-hardy spring wheat 'Manitou' and the very cold-hardy winter wheat 'Norstar'. The effects of each allele on phenological development and low-temperature tolerance (LT50) were

SUBMITTER: Limin AE 

PROVIDER: S-EPMC4233904 | biostudies-literature | 2002 May

REPOSITORIES: biostudies-literature