Abstract
Intergeneric hybrids (F1) Diplotaxis erucoides (DeDe) x Brassica napus (AACC) and the first backcross to B. napus (BC1) have been obtained through in vitro culture of excised ovaries. The chromosome numbers of F1 and BC1 plants proved the occurrence of unreduced gametes. The study of metaphase I chromosome pairing showed that autosyndesis in De genome and allosyndesis between De and A/C genomes might exist. The male fertility of the F1 plants was low. Some male-sterile plants were found in F1 and BC1 progeny. The possibilities of creating addition lines B. napus-D. erucoides and of obtaining a new cytoplasmic male sterility in B. napus are discussed.
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