摘要
研究了小麦抗旱性鉴定的部分产量指标、形态指标和生理指标。通过对４个产量指标分析，确认抗旱指数优于抗旱系数、干旱敏感指数和产量因素降低指数，抗旱指数既能反映品种的抗旱性能，又能体现品种在旱地条件下的产量水平，可作为小麦杂种稳定世代鉴定抗旱性的可靠指标。对于大量品种资源和杂种分离世代材料的抗旱性鉴定，可用胚芽鞘长度和拔节期叶面积指数为指标。该指标简便易行、快速经济。小麦灌浆期叶片脯氨酸含量与品种的抗旱性无明显相关。
In this paper,some of yield indices,morphological and physiological characteristics in determining drought resistance of winter wheat were studied.The results showed that drought resistance index was superior to drought resistance coefficient,drought susceptibility index and reducing indices of yield components in determining drought resistance of winter wheat.Index of drought resistance,which represented both the drought resistance and productivity of a cultivar,could be used as a reliable index of drought resistance for stable generation of hybrids.Such indices as length of coleoptile and LAI at elongation stage,which were predicted simple,easy,fast and accurate,could be used to determine the drought resistance of a bulk of genetic resources and segregated individual plant of hybrid progenies.Correlation coefficient was found not significant between drought resistance and leaf proline concentration at grain filling stage,which was not considered to be a suitable index in determining drought resistance of winter wheat.
出处
《华北农学报》
CSCD
北大核心
1996年第4期84-88,共5页
Acta Agriculturae Boreali-Sinica
关键词
冬小麦
抗旱性
鉴定指标
抗旱指数
Winter wheat
Drought resistance
Indices of determination
Drought resistance index
