摘要
从杂交组合SW94-30921×异源2号的后代中经多代选育,获得一个大穗型寡分蘖小麦新品系H461。为了进一步了解H461的遗传特性,用穗数型多分蘖小麦品种川农16与H461杂交,对两亲本及F1、F2、BC1、BC2、F3群体进行农艺性状考察及分析。结果表明,H461的分蘖数极显著低于川农16,而其小穗数、穗粒数、千粒重、穗粒重、穗长及株高均极显著高于川农16;H461的寡分蘖遗传特性不受细胞质影响,可能受2对主效核基因和一些微效基因的共同控制,其中1对基因对另1对基因有抑制作用。
A new oligoculm wheat line H461, was found in the progeny from the cross between SW94- 30921X Yiyuan 2. The agronomic characters investigation and inheritance analysis were＇conducted in H461 and Chuannong 16 （a wheat cultivar with more spikes per plant） and their F1 ,F2 ,BC1 ,BC2, F3 populations. The results showed that except the tiller number, the agronomic characters of H461, such as spikelets, grain number and grain weight per spike, 1000-grain weight, spike length and plant height were significantly higher than those of Chuannong 16. The heterosis of the agronomic characters were positive in F1. It seemed that the few tillers was controlled by two major nucleus genes with several minor genes, one of which was a suppressing gene, and was not affected by maternal plants.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2006年第6期21-23,共3页
Journal of Triticeae Crops
基金
高等学校博士学科点专项科研基金项目(20040626004)
关键词
小麦
寡分蘖
农艺性状
遗传分析
Wheat
Few tiller
Agronomic characters
Inheritance analysis
