Prospects for the Development of Rapeseed (B. napusL.) with Improved Linoleic and Linolenic Acid Content

摘要

AbstractThe special aspects of the Western Australian rape‐seed breeding programme for the improvement of C18fatty acids (FA) have been highlighted. Progress made through the use of ‘Oro’‐mutant and IXLIN (interspecific X derived) as sources of genes fur improved C18FA is discussed. These two donor lines were crossed or intercrossed with high yielding, disease resistantB. napuslines (summer and winter type) or their early generation progenies from interspecific crosses withB. junceaorB. carinata.Tins provided suitable genetic diversity and favourable agronomic background for the introgression of target genes or gene system for improved C18fatty acids. Many of the polyenoic lines selected from these crosses have indicated scope for combining high linoleic and low linolenic acid levels, with maintenance of good growths and seed development in plants well adapted to the envi