, Volume 21, Issue 2, pp 147-152

Production of fertile intergeneric somatic hybrids between Brassica napus and Sinapis arvensis for the enrichment of the rapeseed gene pool

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Somatic hybrids between Brassica napus (oilseed rape) and its wild relative Sinapis arvensis (Xinjiang wild mustard) from northwestern China were produced by fusing mesophyll protoplasts. Fifty-four plants were identified as symmetric hybrids and four as asymmetric hybrids by random amplified polymorphic DNA analysis and nuclear DNA content. The morphology of investigated 58 hybrid plants resembled characters from both parental species. Highly fertile hybrids were recovered where the fertility was associated with the choice of B. napus genotype. Enhanced disease resistance to Leptosphaeria maculans was found in S. arvensis and in the hybrid offspring. This plant material has great potentials not only for use as a bridge for the introduction of a number of valuable traits from the wild species to Brassica crops but also for breeding new varieties with improved blackleg resistance.

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