农艺性状优良冬小麦ph1b系的创造及标记辅助选择的应用

利用改进的桥梁亲本法， 即以阿勃5B缺体为桥梁亲本， 分别与受体冬小麦推广品种(农大95、 京411和京冬8号)和中国春ph1b突变体杂交， 两个组合F1(即5BPh1和5Bph1b单体)再杂交， 后代选择5Bph1b单体与受体亲本5BPh1单体杂交， 仅3个世代就获得了3个冬小麦ph1b中间育种系， 在杂交转育过程中， 我们用先前获得的3个SCAR标记对5

Constructions of Elite ph1b Winter Wheat Lines and the Application of the Marker assisted Selection

The nullisomic 5B of Abbodanza was used as bridge parent to cross with Chinese Spring ph1b mutant and three released elite winter wheat varieties, Nongda 95, Jing 411 and Jingdong 8, in order to develop some winter wheat ph1b breeding lines. Three ph1b winter wheat breeding lines were constructed after three crossing generations and one selfing generation. The monosomic 5B harboring ph1b gene was selected by using the three SCAR markers linked to ph1 gene, which were obtained in the previous study. This strategy that combined the bridge parent method with application of marker assisted selection was demonstrated to be time consuming, low cost and simple in the program of transferring desirable alien gene(s) into common wheat.