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利用 K( Ae.kotschyi)、V( Ae.ventricosa)型小麦雄性不育恢复系轮回选择群体 C3及其 6个恢复亲本基因型 ,与 K太 91 1 2 89A和 V太 91 1 2 89A不育系分别杂交 ,获得了 2 1 2个杂种 ;利用这些杂种分析研究了杂种 F1 代的恢复度及其产生单倍体的频率。结果表明 ,不同亲本的恢复基因得到累加重组 ,优良恢复基因型的频率提高 ,30 %基因型的恢复度达到 81 .0 %～ 96.2 % ,平均值 90 .2 % ,较双亲平均值 ( 75.7% )提高 1 4 .5% ;有2 1 %的杂种 F1 产生单倍体 ,单倍体频率的变化幅度为 3.9%～ 9.8% ,且随着恢复度的提高呈现下降的趋势 ,为显著的负相关 ( r=-0 .8732～ -0 .92 58) ,说明恢复基因对单倍体的产生有一定的抑制作用
The genotypes of C3 and its six restorer parents were selected by K (Ae.kotschyi) and V (Ae.ventricosa) male sterile restorer lines and crossed with K 91 1 2 89A and V 91 91 89A Were crossed with each other to obtain 2 1 2 hybrids. The hybrid F1 hybrids were used to study the degree of recovery and the frequency of haploid generation. The results showed that the recovery genes of different parents were accumulated and recombined, and the frequency of excellent recovery genotypes increased. The recovery rate of 30% genotype reached 81.0% -96.2% with an average of 90.2% ) Increased by 14.5%, 21% of F1 hybrids produced haploid, and the haplotype frequency ranged from 3.9% to 9.8%, and showed a decreasing trend with the recovery, which was significantly negative (R = -0.88732 ~ -0.992 58), indicating that the recovery of the haploid gene has a certain degree of inhibition