水稻株高突变系的农艺性状与抗倒伏研究  

AGRONOMIC CHARACTERS AND LODGING RESISTANCE OF PLANT HEIGHT MUTANTS OF RICE

作　　者：章忠贵[1,2] 刘斌美[2] 许学[2] 张丽丽[2] 王敏[1] 吴跃进[1,2] 

机构地区：[1]安徽农业大学农学院,安徽合肥230036 [2]中国科学院离子束生物工程学重点实验室,安徽合肥230031

出　　处：《核农学报》2010年第3期430-435,共6页Journal of Nuclear Agricultural Sciences

基　　金：中国科学院知识创新工程青年人才领域前沿项目(085FCQ0126);中科院方向性项目(KJCX2-YW-N34)

摘　　要：以14个水稻日本晴株高突变体近等位系为材料,研究了株高对水稻农艺性状和抗倒伏能力的影响。结果表明:株高与穗长、节间3长、重心高度、主茎鲜重、主茎干重、千粒重、单株生产力和生物产量呈极显著正相关,与节间2长呈显著正相关;同时株高与倒伏关系密切,与倒伏指数呈极显著正相关,与弯曲力矩、秆型指数呈显著或极显著负相关。农艺性状与抗倒伏相关性显示,穗长、重心高度、基部节间长(第1、2节间)、主茎鲜重及干重、结实率、千粒重、单株生产力和生物产量等对植株的抗倒伏性影响较大。Fourteen plant height mutants of Nipponbare were used to study the effect of plant height on the agronomic characters and lodging resistance. The results indicated that the plant height was positively correlated with spike length, third internode length,height of gravity center,fresh weight of main stem,dry weight of main stem,thousand-grain weight,grain-yield per plant and biological yield,and the second internode length. Meanwhile,plant height played an important role in lodging resistance,it was significantly positively correlated with lodging index and negatively correlated with bending moment and culm type index. The correlation between agronomic characters and lodging resistance showed that several agronomic characters had strong impact on the lodging resistance,such as spike length,height of gravity center,basal internode length （ first and second internode）,fresh and dry weight of main stem,dry weight of basal internode,seed setting,thousand-grain weight,grain-weight per plant and biological yield.

关 键 词：水稻 株高 农艺性状 倒伏指数 

分 类 号：S511[农业科学—作物学]