Breeding of Qingza 6, a hybrid rape variety with high yield and quality.

Qiangza 6 with high yield,double-low and resistance to sclerotium is the first hybrid spring rape variety bred from the microspore culture technique in Qinghai province.The average yield in state regional tests was 242.28 kg/667m2,15.51% and 10.93% higher than Qingyou 14 and Qingza 2 respectively.The average yield in state production tests was 242.28 kg/667m2,7.73% higher than Qingza 2.The erucic,glucosinolate and oil content was 0.1%,20.26 μmol/g and 47.39% respectively.