摘要
利用５（Ａ）×２（Ｒ）两组亲本杂交的１０个杂种及其相应的亲本材料，探讨高产条件下Ｋ、Ｖ型小麦的杂种优势。结果表明：单株产量有很强的杂种优势，７个组合超双亲平均值为７．１１％～２５．１％，其中３个为１５．７％～２５．１％，４个组合超标优势２．４％～１８．１％。Ｋ、Ｖ型杂种优势的主要表现是千粒重的增高，其次是穗粒数，有３个组合超双亲平均值。单株穗数的减少对杂种产量有影响，选择多穗亲本。
By Using of 10 F 1 hybrids derived from the diallel cross of 5 K,V cytoplasmic A lined and each of 2 R lines as well as their parents,the heterosis of K, V cytoplasmic hybrid wheat was studied under high yield condition.The results showed that hybrid with K, V cytoplasm had very high heterosis in the grain yield per plant,7 crosses yielded 7 11%-25 1% more than the average of both parents, where 3 crosses of them were 15 7%-25 1%,4 crosses increased 2 4%-18 1%.The heterosis mainly showed higher 1000-grain weight and then the grains per spike,and 3 crosses surpassed the average of both parents.Reduction of spikes per plant effected the yield of hybrid.The spikes of hybrid wheat could be increased by selecting the parents with more spikes.
出处
《华北农学报》
CSCD
北大核心
1997年第2期17-22,共6页
Acta Agriculturae Boreali-Sinica
基金
山东省科委"八五"项目
关键词
小麦
杂种优势
配合力
K,V cytoplasmic hybrid wheat
Heterosis
Combining ability
