Research Progress in Wheat Cold Resistance
It is very important for grain production to improve the cold resistance of wheat and cultivate new varieties of cold-resistant wheat. Cold temperature is one of the most important abiotic factors affecting wheat yield; wheat has a complex cold resistance mechanism, often expressed at different periods, and exhibits variation in cold resistance. This cold resistance involves many factors and is a complex quantitative trait. The molecular mechanism of wheat cold resistance and the associated changes in physiological and biochemical indexes are reviewed in this paper. The molecular mechanism in wheat mainly involves cold resistance genes, chromosome localization, cold-induced genes, and cold-regulated proteins. The physiological and biochemical indexes in wheat include the soluble sugar content, free proline content, activity of various enzymes, malondialdehyde content and relative conductivity. The experimental techniques used to assess the cold resistance of wheat, and other crops, and the prospect of cold resistance research on wheat in the future are discussed.