摘要
作为国家和河北省小麦品种区域试验品种抗寒性鉴定地点的北京延庆和河北遵化,多数年份为暖冬年,易出现抗寒性差的小麦品种不能被检出等问题。因此,选择冬季气温更低的河北省蔚县(90%的年份1月最低温度低于-18℃)作为小麦育种早代(F4)新品系抗寒性的鉴定试验点,进行超低温越冬法选择对抗寒丰产小麦新品种选育具有重要意义。文章从形态、生理和分子层面综述了小麦抗寒性的鉴定方法和筛选指标,评价了“超低温越冬选择法”的科学依据、实施效果、鉴定技术,旨在为“超低温越冬选择法”在抗寒丰产小麦新品种选育中的应用提供参考。
Yanqing,Beijing and Zunhua,Hebei,which are the locations for the national and Hebei Triticum aestivum regional test varieties to be tested for cold resistance,most of the years were warm winter,and there were problems such as failure to detect Triticum aestivum varieties with poor cold resistance.Therefore,Yuxian County,Hebei Province,where the winter temperature was lower(90%of the year in January,the lowest temperature was lower than-18℃),was selected as the test site for the cold resistance of the new Triticum aestivum breeding early generation(F4)line,and the ultra-low temperature overwintering method was selected,and it was of great significance to carry out ultra-low temperature overwintering selection method to breed new varieties of cold-resistant and high-yielding Triticum aestivum.This article summarized the identification methods and screening indicators of Triticum aestivum cold resistance from the morphological,physiological and molecular levels,and evaluated the scientific basis,implementation effects and identification technology of the“Ultra-low temperature overwintering selection method”,and it aimed to provide a reference for the application of“Ultra-low temperature overwintering selection method”in the selection and breeding of new Triticum aestivum varieties with high yield and cold resistance.
作者
杨学举
张树华
赵勇
徐渴
YANG Xueju;ZHANG Shuhua;ZHAO Yong;XU Ke(College of Life Science,Hebei Agricultural University,Baoding 071000,China;College of Agronomy,Hebei Agricultural University,Baoding 071000,China)
出处
《北方农业学报》
2020年第5期26-29,共4页
Journal of Northern Agriculture
基金
国家重点研发计划(2017YFD0101000)
河北省科技计划项目(16226320D)。
关键词
小麦
冬季冻害
抗寒育种
低温筛选
Triticum aestivum
Winter frost damage
Cold hardiness breeding
Low temperature screening
