Study of hybridization between varieties with exchangeable supply in high-yield disease resistance and good quality.

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.