STUDIES ON CHEMICAL MALE-GAMETOCTDE, MECHANISM AND HYBRIDS OF RAPESEED
Guan Chunyun, Wang Guohuai, Li Sun, Chen Sheyuan, Tian Senlin (Hunan Agricultural College, Changsha, China)
The result of studies of is chemical male gametocides on rapeseed (B.napus) were indicated that the percentage of male-sterility plant caused by 0.4% GA,, 1% or 1.5%MG5, 1.5%KMS-1 and 0.5%MG5 at l nucleate pollen stage tratment were more than 80%. The microsporogenesis is abnormal,the peroxidase isoenzyme bands is less and weaker,the dehydrogenase activity is weaker on male sterile anthers of rapeseed induced by chemical male game-tocide.The hybrids produced by chemical male gametocide showed great hetero-sis on seed yield. The seed yield of low erucic acid crosses Xiangyou No.n ×466 over the recommended conventional rapeseed varities 19.26%.