玉米雌雄穗开花间隔影响穗粒数的潜在原因研究  

Studies on the Underlying Causes of the Relationship Between Anthesis-silking Interval and Grain Number

作　　者：张凤路[1] 陈景堂[1] G.O.Edmeades 

机构地区：[1]河北农业大学农学院,保定071001 [2]国际玉米小麦改良中心

出　　处：《玉米科学》2002年第2期53-55,共3页Journal of Maize Sciences

基　　金：河北省自然科学基金 (编号 :3 0 2 2 91);河北省教委科研基金资助项目

摘　　要：玉米的雌穗与雄穗开花的时间常不一致 ,导致了雌雄穗开花间隔 (ASI)的产生。ASI的延长会导致玉米穗粒数的减少进而影响到产量。对同一品种而言 ,逆境会导致ASI的延长 ,但不同品种的反应并不一致。从植株内部的竞争、植株间的竞争、粒数与ASI的关系。Anthesis and silking of maize were always not at the same time, that caused the occur of anthesis-silking interval (ASI) The elongation of ASI caused the decrease of kernel numbers per ear, and resulted in the decrease of grain yield For the same variety, ASI may be elongated by stress,but the reactions of different varieties were not the same This paper studied the underlying causes of the relationship between anthesis-silking interval and kernel numbers in the following aspects: the contest internal and external plants, the relationship Between kernel number and ASI, pollen supply and the fitness of spikelet

关 键 词：玉米 雌雄穗开花间隔 ASI 穗粒数 

分 类 号：S513[农业科学—作物学]