水稻茎秆性状与抗倒伏及产量因子的关系  

Study on the Relationship Between Rice Lodging Resistance and Culm traits & the Yield Factors

作　　者：黄艳玲[1] 石英尧[1] 申广勒[1] 石扬娟[1] 王维刚[1] 陈多璞[1] 

机构地区：[1]安徽农业大学农学院,合肥230036

出　　处：《中国农学通报》2008年第4期203-206,共4页Chinese Agricultural Science Bulletin

基　　金：安徽省"十一五"科技攻关项目"水旱稻杂交广谱恢复系在抗倒超高产组合上的应用"(06013101B);"水稻新品种(组合)选育及技术创新"(06003010B);安徽省教育厅自然基金"水稻抗倒伏机理研究与评价体系建立"(2006jql116);合肥市科技攻关项目"抗倒伏高产杂交中籼新组合选育与推广"(20071002)

摘　　要：以22个水稻品种(组合)为材料,研究水稻茎秆性状与抗倒性和产量因子的关系。结果表明:株高与倒伏指数呈显著或极显著正相关;壁厚、抗折力、节间粗和单位节间干重与倒伏指数多呈显著或极显著负相关;各节的抗折力与节间粗、壁厚和单位节间干重多呈显著或极显著正相关,与株高、秆长和节间长呈显著或极显著负相关。基部3个伸长节间的节间长度、壁厚、粗度和单位节间干重与千粒重多呈正相关,多数达到显著或极显著水平,说明秆壁粗壮厚实可以孕育大穗,并适当控制株高,对高产抗倒品种的培育有重要作用。22 rice cultivars was used to study the relationship between culm traits and lodging resistance and yield factor. The results indicated that the relationship between plant height and lodging index are positive correlation; thickness of culm, breaking-resistant strength and dry matter of stem was negatively correlated with lodging index. Thickness of culm, and dry matter of stem played an active role in lodging resistance, but the breaking-resistant sthength was actively correlate with thickness of culm, and dry matter of stem. Three basal internodes length, thickness and dry matter of stem was positively correlated with 1000-grain weight. The results showed that thicker culms was benefit to larger panicles, so it is important to control plant height properly, which played an active role in breeding breaking-resistant rice cultivars.

关 键 词：水稻 茎秆性状 抗倒伏 产量因子 

分 类 号：S511[农业科学—作物学]