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[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。
[Objective] The research aimed to find out the relationship between winter traits and cold resistance of winter wheat. [Method] The contents of soluble sugar, soluble protein, free proline, malondialdehyde and other metabolites in seedling leaves of 5 species of Amanita and 5 kinds of barley were measured under low temperature stress. The differences of the metabolites content in different wheat leaves were compared to determine whether the cold resistance of winter wheat was related to mango traits. [Result] The contents of soluble sugar, soluble protein, free proline, malondialdehyde and other metabolites in winter wheat were higher than those in turning green stage in all the winter wheat cultivars, including Longjiang 102, Xifeng 27 and Wumang Variety GB20 accumulated soluble sugar, soluble protein and free proline had stronger metabolic ability. There were 30 cultivars of Longyu No.3 and Zhongmu 30, the weakest of which were 00102-2-2-1-1. However, there was no significant difference in soluble sugar, soluble protein, malondialdehyde and free proline between winged and unripe wheat populations during the winter. [Conclusion] The mandarin traits of winter wheat had no relationship with its cold resistance, and could not be used as the basis for screening cold-resistant varieties in production.