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黔油双低２号系用Ｏｒｏ×安徽大花种间杂交选育的株系作母本与Ａｌｔｅｘ作父本杂交，经冬播、夏繁定向选育而成的甘蓝型（Ｂ．ｎａｐｕｓＬ．）双低（低芥酸、低硫甙）油菜新品种。在一般大田生产条件下，亩产１００～１５０ｋｇ，高产可达１７０ｋｇ以上。原种芥酸含量０．３％，硫甙含量１７．５１μｍｏｌ／ｇ，含油量３８％～４０％。１９８７～１９９４年分别参加品比、区试、生产试验、示范，在各试验中均表现出品质好，稳产，抗逆性强等优点。１９９５年７月通过贵州省农作物品种审定委员会审定并准予推广。
Qianyou Shuangzao No.2 was crossed with Altex by using Oro × Anhui big flower interspecific hybridization as the male parent, and the B.napus L. was bred by winter sowing and summer blooming. ) Double low (low erucic acid, low glucosinolate) rape new varieties. In general field production conditions, per mu 100 ~ 150kg, high-yield up to 170kg or more. The original species of erucic acid content of 0.3%, glucosinolate content 17.51μmol / g, oil content of 38% to 40%. 1987 to 1994, respectively, to participate in the ratio, the district test, production test, demonstration, in all tests showed good quality, stable yield, strong resistance and so on. July 1995 through the Guizhou Provincial Crop Variety Approval Committee approved and allowed to promote.