本试验是通过多次回交法将太谷显性核不育基因导入到中国春小麦品种中,获得了中国春显性单基因核不育“桥梁”小麦材料〔中国春(Ta)〕。以此核不育“桥梁”材料不同世代的不育株与黑麦进行属间杂交,其属间可交配性与对照相比较,表现出扬麦1号或太谷衍生核不育扬麦1号(Ta)_(F1)×黑麦<中国春(Ta)_(F1)×黑麦<中国春(Ta)_(B1)×黑麦<中国春品种×黑麦的梯度结实率,证实了可交配性基因B来自中国春品种,且其剂量效应随着世代的递增而加强。显性核不育“桥梁”小麦的利用不仅能够革新原有传统的杂交技术和排除“假杂种”的干扰,并且还可与各具优良性状的多个黑麦混种,进一步扩大种质库,创造出更多的理想的小黑麦品种或品系。 In this study, Taigu dominant-negative genic male sterility gene was introduced into Chinese spring wheat by multiple backcrossing methods to obtain the “bridge” wheat material (Chinese Spring (Ta)) of Chinese spring dominant single-gene nuclear sterility. The male sterility “bridge” material of different generations of sterile plants and rye cross between the hybrids, the intercross mating compared with the control, showing Yangmai 1 or Taigu derived nuclear male sterile Yang Mai 1 (Ta) _ (F1) × rye