一、油菜原种生产的特点甘兰型油菜属常异花授粉作物,在隔离条件差时,群体内极易迁入新的基因。目前,生产上使用的油菜品种,一般都是杂交育成,与自花授粉作物相比,个体间性状差异较大,群体内遗传基础复杂,基因的重组和性状的分离是很难 First, the characteristics of the original production of rape Brassica oleracea is often cross-pollinated crops, isolation conditions are poor, the group is very easy to move into a new gene. At present, the varieties of rape used in production are generally hybridized. Compared with self-pollinated crops, traits of rapeseed vary greatly among individuals, and the genetic basis in the population is complex. It is very difficult to separate the gene recombination and traits