冬小麦芒性状与抗寒性关系研究

目的]探明冬小麦芒性状与抗寒性的关系。方法]对5种有芒与5种无芒小麦品种幼苗叶片在低温胁迫下其体内可溶性糖、可溶性蛋白质、游离脯氨酸、丙二醛等代谢物质的含量进行测定,对越冬期和返青期各小麦叶片中代谢物质含量的差异进行比较,明确冬小麦抗寒性是否与芒性状有关。结果]所有小麦品种在越冬期其体内可溶性糖、可溶性蛋白质、游离脯氨酸、丙二醛等代谢物质的含量均高于返青期,其中有芒品种陇鉴102、西峰27号及无芒品种GB20积累可溶性糖、可溶性蛋白、游离脯氨酸的代谢能力较强,有芒品种陇育3号及无芒品种中梁30、天00102-2-2-1-1最弱。而有芒小麦和无芒小麦群体间在越冬期其可溶性糖、可溶性蛋白、丙二醛、游离脯氨酸含量差异均不显著。结论]冬小麦的芒性状与其抗寒性没有关系,生产上不能将其作为抗寒品种筛选的依据。

Study on the Relationship between Mans Character and Cold Resistance of Winter Wheat

Objective] The aim was to explore the relationship between mans character and cold resistance of winter wheat.Method] The study determined the content changes of soluble proteins,soluble suger, free proline and malondialdehyde in five mans wheat and five no mans wheat in a cold coercion.At the same, in this study also compared the contents between the leaves of winter wheat in a cold coercion and in the earlier pe-riod of jointing after it return warmly.Result] The results showed that several kinds of wheat in the winter period the soluble sugar, soluble pro-tein and free proline, malondialdehyde and contents of metabolites were higher than green period, the mans wheat Longjian 102, Xifeng 27 and no mans wheat GB20 had the strongest ability of soluble sugar, soluble protein and free proline, the mans wheat Longyu 3, no mans Zhongliang 30 and Tian 00102-2-2-1-1 had the lowest ability.There were no significant difference in soluble sugar,soluble protein,MDA,proline con-tent in mans wheat and no mans wheat in overwintering period. Conclusion] Research suggests that if there are mans cannot reflect its cold re-sistance, and also cannot be used as the basis for cold resistance varieties screening.