白菜型油菜的天然异交率很高,一般在90％以上,高的可达100％。但是,造成如此高的异交率的机制,并非完全是自交不亲和性的支配,有不少品系是由于自交迟钝、异交敏捷造成的。自交迟钝系在有外来花粉的条件下,可以顺利产生杂种;在隔离种植的条件下,可以缓慢自交(或近交),产生半量以上的种子,繁衍后代。它既像雄性不育系及自交不 Natural rapeseed cabbage natural rate of high, usually more than 90%, high up to 100%. However, the mechanisms that have led to such a high rate of out-crossing are not entirely dominated by self-incompatibility. Many strains are due to slow self-development and quick cross-breeding. Inbred lines with foreign pollen in the conditions, can successfully produce hybrids; under conditions of isolation and planting, you can self-slow (or inbred), produce more than half the amount of seeds, multiply offspring. It is both male sterile and self-bred