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甘蓝型油菜品种在种植过程中极易造成生物学混杂和机械混杂,种子连续种植三年后,原有典型性状就会部分消失,表现生长不齐、着果少、结实差、抗逆性减弱,严重降低产量和品质。这在低芥酸油菜品种中表现更为突出,特别是芥酸含量明显提高。低芥酸油菜若不抓住良种繁育这一关,即使有了优良品种,也不能为大面积生产所利用。近几年,我们在低芥酸油菜良种繁育工作中围绕芥酸含量变化作了一些探索,成功地繁育了大批量芥酸含量在0.5％以下的油菜种子。
Brassica napus varieties in the planting process can easily lead to biological hybrids and mechanical hybrids, seed three years after planting, the typical typical characters will disappear, the performance of the growth of uneven, with fewer fruit, poor resistance, weakened resistance , Seriously reduce the yield and quality. This is more prominent in the low erucic acid rape varieties, especially erucic acid content increased significantly. Low erucic acid rape, if not seize the fine breeding, even with good varieties, can not be used for large-scale production. In recent years, we have made some explorations on the changes of erucic acid content in the breeding of low-erucic rapeseed and have successfully breed high-volume canola seeds with erucic acid content below 0.5%.