白菜类蔬菜资源的油分分析及其在油菜育种中的应用

对白菜类蔬菜——大白菜、小白菜、紫菜薹和菜心种质资源含油量的分析表明:小白菜平均含油量最高,为40.94%,大白菜39.34%,菜心39.22%,紫菜薹35.33%。其中大白菜和小白菜有着较为丰富的高油分种质资源,通过单株定向选择可选出更高含油量的品系。脂肪酸组分分析表明白菜类蔬菜种子的油酸含量比甘蓝型油菜高约1～8个百分点;大白菜、小白菜和紫菜薹的饱和脂肪酸含量均低于甘蓝型油菜,而所有白菜类蔬菜的棕榈酸都低于甘蓝型油菜。利用这些高油分材料培育出了高含油量的白菜型油蔬两用型油菜——白杂油2号。

Analysis on Oil Content of Vegetable Materials of Chinese Cabbage Type and Application in Rapeseed Breeding

The oil content of the vegetable materials of the Chinese cabbage type was analysed, the result indicated that the average oil content of Pakchoi was highest (40.94%), and Chinese-cabbage,Flowering Chinese cabbage and Purple caitai were in turn 39.34%, 39.22%, 35.33%. In them, Chinese -cabbage and Pakchoi had richer high oil content germplasm, and these lines with higher oil content would be selected in them by directional selection. The fatty acid compositions were analysed further, and the result showed that the oleic acid content (C18:1) of Chinese cabbage type was about 1% to 8% higher than that of B.napus, and saturated fatty acid content of Chinese-cabbage ,Pakchoi,Purple caitai,and the palmitic acid content of all Chinese cabbage type were lower than that of B.napus. Rapeseed variety (Baizayou No.2) in B. Campestris with high oil content was bred, it was a new mean variety as rapeseed and vegetable.