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调查了26份高原粳稻品种(系)的田间抗倒性,测定了材料的株高、穗重、穗长、节间长度、节间壁厚、节间直径与节直径7类共20个性状,同时分析了品种抗倒性与系谱之间的关系。结果表明,穗长、穗重与节间直径3类性状与抗倒性相关不显著,株高、穗下节间长度、穗下节间壁厚、穗下节直径这4类性状与品种抗倒性显著或极显著相关;品种系谱分析表明,品种(系)的抗倒性与其亲本关系密切。品种抗倒性与其亲本关系密切,选择抗倒伏品种作亲本,可以提高育成品种的抗倒性。
Twenty-six plateau japonica cultivars (lines) were investigated for their lodging resistance in the field. The plant height, spike weight, spike length, internode length, internode wall thickness, internode diameter and node diameter of 20 materials were measured. At the same time, the relationship between lodging resistance and pedigree was analyzed. The results showed that there were no significant correlations between the three traits of spike length, panicle weight and internode diameter and the lodging resistance, and the four traits including plant height, internode length under panicles, Significant or extremely significant correlations were observed between the two cultivars. The pedigree analysis showed that the lodging resistance of breeds (lines) was closely related to their parents. The lodging resistance of breeds is closely related to their parents, and selecting lodging resistant varieties as parents can improve the lodging resistance of bred varieties.