This study was supported by High Project of Science and Technology in China (No. 2001AA21110103);Doctoral Foundation of Education Department in China (No. 20020504009).
A breeding strategy for widening the germplasm of Brassica napus was proposed by introgression of the A^r subgenome of B. rapa (A^rA^r) and C^c of B. carinata (B^cB^cC^cC^c) into natural B. napus (AnAncncn). The...