Development of resynthesised rapeseed forms with low erucic acid character and their use in hybrid breeding
Resynthesised (RS) forms of rapeseed (Brassica napus L.; genome AACC, 2n =38) generated from interspecific crosses between its diploid progenitors Brassica rapa L. (syn. campestris; genome AA, 2n =20) and Brassica oleracea L. (CC, 2n =18)are getting interest in the development of rapeseed hybrids. Intensive breeding work during the last hundred years led to the narrow genetic base in this crop species. At the beginning the traditional quality of present rapeseed cultivars limited the use of rapeseed as plant oil. But the discovery of low erucic acid mutants in the cultivars Liho and Oro and the low glucosinolate character in the cultivar Bronowski give rise to the development of so called canola quality rapeseed. The low erucic acid character was found in the gene pool of rapeseed and transferred to other cultivars via crossing and backcrossing. During the screening of Brassica species B. oleracea genotypes with low erucic acid character were selected. The aim of this work is to develop 0-quality rapeseed forms over interspecific crosses with 00-B. rapa forms. We know that the low yield capacity of RS lines limits their use in yield breeding. On the other hand, the B. oleracea and B. rapa genotypes used in this study are winter forms. Rapeseed hybrids using RS-lines were developed before, but they were RS-lines with spring character and traditional fatty acid composition. At the end of this study 0-quality RS-lines will be developed via interspecific crosses and it will be the first time that rapeseed hybrids based on RS-lines will be developed using 0-uality RS-lines. These developed hybrids will furfther be tested for their yield capacity at field conditions.
Brassica napus - resynthesised rapeseed - hybrid breeding
Fatih Seyis Orhan Kurt Hüseyin Uysal
Department of Field Crops, Faculty of Agriculture, University of Ondokuz Mayis, 55139 Kurupelit/Samsun, Turkey
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
200-202
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）