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调查了ms(Ae.kotschyi)-77(2)和ms(Ae.variabilis)-77(2)低、高世代和在转育、组配中单倍体频率的变化趋势及在不同胞质间、核型间存在的变异。结果表明:(1)粘、易型1B/1R小麦雄性不育系产生单倍体的遗传机理是由于1B/1R卵细胞与粘、易胞质的专一互作,并在花粉蒙导下而导致孤雌生殖的结果;(2)1B·1B/1R杂合核型比1B/1R·1B/1R纯合核型产生的单倍体频率高,1B/1R·1B/1R纯合核型世代间单倍体诱导频率相对稳定;(3)在同一核背景下,诱导单倍体频率粘质高于易质;(4)用不同来源的1B/1R易位系来转育粘、易型不育系及用不同核型的父本与其组配杂种,诱导单倍体频率明显不同;依此差异进行亲本选择,分别可选出与组配出不产生或很少产生单倍体的粘、易型1B/1R不育系和F_1杂种。此外,分析了粘、易型1B/1R不育系一般恢复度不高的内在原由,认为与1B·1B/1R杂合核型中的易位染色体在减数分裂中能否正常联会配对直接相关。
The frequencies of haplotypes in the low (Ae.kotschyi) -77 (2) and the low (Ae.variabilis) -77 (2) ms of Ae. , There is variation between karyotypes. The results showed that: (1) The genetic mechanism of the haploids of sticky and easy type 1B / 1R wheat male sterility lines is due to the specific interaction between 1B / Resulting in the result of parthenogenesis. (2) The haplotype frequencies of 1B · 1B / 1R heterozygous karyotypes were higher than that of 1B / 1R · 1B / 1R homozygous karyotypes, and 1B / 1R · 1B / 1R homozygous karyotype The frequency of haploid induction was relatively stable between generations. (3) The frequency of haploid induction was higher than that of susceptible ones under the same nuclear background. (4) The translocations of viscose were facilitated by 1B / 1R translocations from different sources Type male sterile lines and their parents with different karyotypes with their hybrids, the haploid induction frequency was significantly different; according to the differences in the parental selection, respectively, and the group can be selected with or without haploid haploid Sticky, Ease 1B / 1R and F1 hybrids. In addition, we analyzed the inherent reason why the general 1B / 1R male sterile line of 1B / 1R was not well restored, and whether paired translocations with the 1B · 1B / 1R heterozygous karyotype can be paired normally in meiosis D.