小麦属(Triticum)的许多近缘野生种拥有小麦育种有利的农艺性状.通过小麦与携带有利遗传变异的异源染色体部分同源重组,导入这些基因,是可能取得成功的.导入这些变异有如下几种方法:1)缺少抑制部分同源染色体配对的5B染色体的普通小麦,即异源种的杂种与普通小麦回交;2)利用能消除5B染色体上Ph位点活性的拟斯卑尔脱山羊草(Riley等,1964);3)F_1杂种与5B染色体上缺失抑制部分同源配对基因的ph-1突 Many closely related wild species of Triticum possess favorable agronomic traits for wheat breeding, and successful introduction of these genes by partial homologous recombination of wheat with heterologous chromosomes carrying favorable genetic variation is as follows Several methods: 1) the lack of inhibition of part of homologous chromosome paired 5B chromosomes of common wheat, that is heterogeneous hybrids and wheat backcross; 2) the use of the Ph chromosome to eliminate 5B activity on Pei Speer Goat grass (Riley et al., 1964); 3) F_1 hybrids lack ph-1 knockout on the 5B chromosome that partially obscures homologous genes