Molecular characterization of low-temperature tolerance in cereals

谷物耐低温性的分子表征

• 批准号: 406114-2010
• 负责人: Chibbar, Ravindra
• 金额: $ 3.35万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=529981
• 关键词: Molecular; characterization; low; temperature; tolerance

About 84% of the arable land in Canada is located in the three Prairie Provinces: Alberta, Saskatchewan and Manitoba. Spring-seeded crops dominate the Prairie acreage, but winter crops like winter wheat has lately emerged as a complement. Fall-seeded crops have the advantage of an early out-growth in spring which extends the growing season and results in higher yields than spring-seeded crops. For winter wheat, a low production cost in combination with environmental and ecological benefits are additional arguments for increased acreage. However, the winter survival potential in current winter wheat cultivars is inadequate to consistently survive extreme cold winter temperatures. Therefore, development of varieties with improved winter survival will benefit winter wheat production. In addition, the cold-hardiness traits could also be transferred to spring-seeded crops susceptible to early spring or late summer frosts that reduce grain yield and quality.

加拿大大约84%的可耕地位于三个草原省：阿尔伯塔省、萨斯喀彻温省和马尼托巴省。春季种子作物在草原上占主导地位，但冬小麦等冬季作物最近也出现了，作为补充。秋季种子作物的优点是在春季早熟，延长了生长季节，产量比春季种子作物高。对于冬小麦，低生产成本加上环境和生态效益是增加种植面积的另一个理由。然而，目前冬小麦品种的冬季生存潜力不足以持续生存极端寒冷的冬季温度。因此，培育冬小麦耐冬品种将有利于冬小麦生产。此外，这些抗寒性状也可以转移到易受早春或夏末霜冻影响的春籽作物上，从而降低产量和品质。