高产抗病优质互补的品种间杂交研究

Study of Hybridization between Varieties with Exchangeable Supply in High-yield Disease Resistance and Good Quality

为了选育优质、高产、抗病的小麦新品种,选用大穗大粒、矮秆、条锈病和白粉病免疫、HMW-GS亚基组成为Null、7＋9、5＋10的贵农001,与小穗、高秆、中抗条锈病和白粉病、亚基组成为Null、7＋8、5＋10的Blosky杂交,杂交F4代出现大量的性状互补和超亲类型,如主穗平均穗粒数60~80粒、千粒重48~50 g、株高65~70 cm、条锈病和白粉病免疫的类型,超亲亚基组成类型有1、7＋8、5＋10;1、7＋9、5＋10;1、7＋8＋9、2＋12;Null、7＋9、5＋10、2＋12;1、7＋9、5＋2＋12。

In order to breed a new wheat variety with good quality,high yield and disease resistance,Hybridization between Gui-nong 001 with large spike,big grain,short stem,immune to stripe rust and powdery mildew,HMW-GS composed of null,7＋9,5＋10 and Canada variety Blosky with small grain,high stem,medium resistance to stripe rust and powdery mildew,HMW-GS comprised null,7＋8,5＋10 had been done and large number of character exchangeable supply types and over-parent types appeared in F4 such as the type of average 60-80 grains per the main spike,thousand grain-weight 48-50 g,plant hight 65-70 cm and immune to stripe rust and powdery mildew,and over-parent types of HMW-GS subunit were 1,7＋8,5＋10;1,7＋9,5＋10;1,7＋8＋9,2＋12;Null,7＋9,5＋10,2＋12;and 1,7＋9,5＋2＋12.