多小穗小麦10-A幼穗发育的遗传研究  

DEVELOPMENTAL GENETIC STUDIES ON THE EAR INITIATION OF A MULTISPIKELET WHEAT LINE 10-A

作　　者：杨武云[1] 黄钢[1] 胡晓蓉[1] 饶世达[1] 

机构地区：[1]四川省农科院作物所

出　　处：《西南农业学报》1997年第3期43-47,共5页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金;四川省应用基础项目

摘　　要：将多小穗小麦１０－Ａ与普通小穗小麦绵阳１１和矮孟牛，及其杂种Ｆ１的幼穗分化特点作了系统比较分析，结果表明：１０－Ａ具有小穗分化持续期长和小穗分化速率高等两个显著特性；其中，小穗分化持续期长的特性未在杂种Ｆ１中表达，而小穗分化速率高的特性不仅能在杂种Ｆ１代中表达，且出现较强的杂种优势。Comparision analyses for a multispikelet wheat line,10-A,two normal spikelet wheat lines MianYang 11 and Aimolu, and the F 1 hybrids between 10-A and these two normal spikelet wheat lines were carried out.The results as follows:compared with normal spikelet wheat lines,10-A had 2 special properties,long ear initiotion duration and high ear initiation rate.The property of high ear initiation rate of 10-A could be expressed in F 1 and showed very strong heterosis while the long ear initiation duration property could not be observed in F 1 hybrids.

关 键 词：小麦 多小穗 穗分化 发育遗传 育种 

分 类 号：S512.103.2[农业科学—作物学]