油菜 脂肪酸組成 改良育種에 關한 研究: 第21報. 脂肪酸組成 改良品種 普及地域에서의 油質과 今後對策

High quality rapeseed cultivars including Nojeokchae, Yeongsanyuchae Halla- yuchae and Tamrayuchae have been released and recommended as a zero erucic acid variety to Cheju famers for 13 years, where is a major rapeseed production area in korea. However, rapeseeds produced in Cheju island in 1992 and 1993 contained 47.7% and 37.0% of erucic acid respectively resulting in poor quality oil being not adequate for edible oil. It was considered that the zero erucic acid varieties did not have an opportunity to be cultivated in Cheju island by farmers living in the Island. Thus, the new rapeseed varieties without erucic acid should be bred and recommended to the farmers of southern area of Korea as a multiple cropping crop just after rice harvest, and for large scale mechanized and labour-serving rapeseed culture. The change of rapeseed breeding goal would be desirable for fatty acid composition improvement of rapeseed to develop varieties adaptable to southern part of Korea, and to produce rapeseed oil directly used as an edible oil safely.