叶位叶片对两系超级杂交稻籽粒充实度的影响  

Effects of Leaf Positions on Grain Plumpness of Two-line Super Hybrid Rice

作　　者：肖辉海 郝小花 XIAO Hui-hai;HAO Xiao-hua(College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan 415000)

机构地区：[1]湖南文理学院生命与环境科学学院

出　　处：《安徽农业科学》2019年第14期29-31,共3页Journal of Anhui Agricultural Sciences

基　　金：湖南省自然科学基金资助重点项目(12JJ2018);湖南省重点学科建设项目(湘教发[2011]42号)

摘　　要：[目的]为探研不同叶位叶片对两系超级杂交稻籽粒充实的影响。[方法]以两系超级杂交稻组合两优389为材料,抽穗期进行剪叶处理,研究不同叶位叶片对籽粒充实度的影响。[结果]剪叶会显著降低水稻的结实率和粒重,增加空秕粒率,从而降低籽粒产量。不同部位叶片对两优389籽粒充作用从大到小依次为剑叶、倒二叶、倒三叶及以下叶片;不同剪叶处理对二次枝梗结实率、空秕粒率的影响均大于一次枝梗。[结论]灌浆结实期确保功能叶不受伤害是实现超级稻高产优质的前提。[Objective]To study the effects of leaf position on grain filling of two-line super hybrid rice.[Method]With two-line super hybrid rice Liangyou 389 as the research material, effects of leaf position on grain plumpness were researched after leaf-cutting treatment at the anthesis.[Result]Leaf cutting could lower seed setting rate and grain weight, and increase the rate of blighted-empty grains and reduced grain yield.Effects of different leaf positions on grain plumpness from high to low were in the order of the flag leaf,the second leaf from the top and the third and lower leaves.The effect of different leaf pruning treatments on seed setting rate and blighted-empty grain rate of secondary branches was greater than that of primary branches.[Conclusion]Protecting the functional leaves from harm is the prerequisite for high-yield and high-quality of super rice.

关 键 词：两系超级杂交稻 剪叶处理 结实率 粒重 

分 类 号：S511[农业科学—作物学]