不同种源山桐子果实脂肪酸组成变异分析GC-MS . Variation Analysis of Composition of Fatty Acids of Fruit of Idesia polycarpa from Different Population

Abstract

Composition and variation of fatty acid of fruit of Idesia polycarpa were determined from eleven different population.And the results indicated that contents of the unsaturated fatty acid were higher than others in fruit,especially linoleic acid contents were the highest,average contents of the linoleic acid of fruit from the eleven population were 63.58%,and there were significant difference between those populations,which from population of Fenyi and Yichang were obviously higher than other populations.Hexadecanoic acid were the maintain saturated fatty acid in fruit,there were significant difference in the hexadecanoic acid among eleven populations,and relative content of the hexadecanoic acid from the Pingwu population were the highest,contents of the other fatty acids were lower,and the extent of variation was large.Contents of hexadecanoic acid and palmitoleic acid in seeds were obvious higher than those in pulp,while contents of linoleic acid,linolenic acid and stearic acid in seeds were significantly lower than those in pulp,contents of oleic acid in seeds and pulp were nearly equal.Contents of unsaturated fatty acids in pulp were higher than those in all the fruit and seeds,and those in seeds were the lowest;coefficient of variation and relative range were smaller,especially least in the pulp.Geographic environment had little influence on the main components of fatty acids expect stearic acid.