Brassica campestris ssp． rap r(z 第1页

Production of the Ogura Cytoplasmic Male Sterile(CMS)Lines of ChineseCabbage-pak-choi(Brassica campestris L．ssp．chinensis var．communis)and Turnip(B．campestris L．ssp．rapifera)and Cytological Observation ofTheir Sterile Organs