Relationship between freezing injury suffered during the stem elongation stage of development and vernalization response in a winter wheat cultivar (Triticum aestivum L. cv. Cheyenne)

Abstract

The Chinese Spring (Cheyenne) chromosome substitution series was grown in three non-vernalizing environments and heading dates recorded. A vernalization treatment was superimposed on one environment. The major component of the vernalization response of the cultivar Cheyenne was located in the chromosome 5D line, presumably due to the presence of vrn3. Minor effects were located in other CS(Cnn) lines. Lines derived from the cross CS/CS(Cnn 5D) were grown in non-vernalizing environments and their Vrn3/vrn3 genotypes postulated. Differences between lines in resistance to freezing injury during stem elongation were not associated with variation of the Vrn3/vrn3 locus.