摘要
本文在１９９３～１９９５年度对杂种小麦利用研究的基础上，采用测交筛选法筛选出１０个恢复系，恢复力在８５％～９６．７％之间；Ｆ１代杂种的单倍体率低于不育系，单倍体频率在０～０．７４％之间，说明恢复亲本对单倍体的产生有一定的抑制作用。并对１９个高恢复度的杂种组合进行了优势分析，结果有５个产量超标优势在１９．５％～３８．１％之间，杂种优势较为显著。
n the basis of studies on utilization of hybrid wheat, 10 restorer lines were selected by using test cross selection method and their restoring ability was 85～96.7%.The haploid of the F1 hybrid was less than that of the sterile line and the frequency of the haploid was 0.0～0.74%. Itindicates that the restoration of parent had an inhibition to certain extent on the occurrence of haploid. A dominance analysis was made for 19 hybrid combinations with high restoring degree, of which 5 had a yield dominance of 19.5～38.1% above standard, a significant hybrid vigor.
出处
《宁夏农林科技》
1998年第1期7-11,共5页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
单倍体
杂种优势
小麦
三系配套
estorer line
Restoring degree
Haploid
Hybrid vigor.
