The double low vari ety used backcross male parent for double high GMS, the double low GMS had been bred through continuous backcross, at the same time, the double low hybrid has be en bred.
英
美
- 以现有的双低品种为回交父本,将双高核不育材料转育成双低核不育系,并已配制出了双低杂交种。