中国野生大豆(G.soja)脂肪及其脂肪酸组成的研究

A STUDY ON FAT CONTENT AND FATTY ACID COMPOSITION OF WILD SOYBEAN（G. soja）IN CHINA

摘要:

对中国1598份野生大豆和1595份栽培大豆的脂肪含量进行了比较分析,发现野生大豆的脂肪含量为9.94％,明显低于栽培大豆的(19.05％)。对来自中国不同纬度的174份不同进化类型大豆进行了脂肪酸组成分析,发现随着大豆进化程度的提高,亚麻酸、棕榈酸含量逐渐降低,油酸含量逐渐增加。探索了日照长度,昼夜温度对大豆脂肪酸形成与积累的影响。发现了一批特异基因型。

Abstract:

The fat content of 1598 wild soybeans （G. soja） from different regions of China was 9.94% on thd average and lower significantly than that of 1595 cultivated soybeans （G. max）, which was averaged19. 05%. The results of fatty acid composition of 174 wild, semiwild （G. gracilis） and cultivated soybeans showed that the linolenic and palmitic acid content decreased, while the oleic acid content increased as the soybean evoluted from wild to cultivated type. The effect of photoperiod and day and night temperature on fatty acid composition was analyzed. Some special genotypes, such as the linolenic content as high as 23. 12%, the linoleic acid content as high as 61. 24%, the oleic acid content as high as 51.55%, and the palmitic acid content as high as 15.49, were discovered in Chinese wild soybean germplasm.