多环境大豆种质资源脂肪酸组分评价及其与农艺性状的相关分析

Relation Analysis of the Fatty Acidcomponent Content of Soybean Germplasm and Agronomic Trait

对哈尔滨、三亚和南宁3个不同地点种植的150份东北地区栽培大豆代表品种(系)的脂肪酸组分及总油分含量进行评价,系统地分析了脂肪酸组分、总油分含量及其与农艺性状的相关性,探讨不同生长环境对脂肪酸组分和总油分积累的影响。结果表明:饱和及不饱和脂肪酸组分的表型均受到环境影响,不饱和脂肪酸的3种组分受环境影响更为明显,油分总量在三个地点间表现较为稳定;在3个不同地点油酸与亚油酸、亚麻酸、棕榈酸均呈极显著负相关;三亚与南宁的大豆种质脂肪酸组分,亚油酸与亚麻酸均呈极显著正相关,而其他性状在不同地点的相关性差异较大;单株荚数与油酸呈极显著负相关,与亚油酸、亚麻酸呈显著正相关,脂肪酸组分与其他农艺性状间相关性均未达到显著水平。

Optimization of soybean fatty acid is one of the most important breeding objectives. In this study,a total of 150 soybean germplasms from Northeastern China were planted in three tested sites including Harbin, Nanning and Sanya. The oil content and fatty acid component of the tested seeds were measured to investigate the relationship within oil content and five fatty acid and with main agronomic traits of soybean as well as the influence of different environments on soybean fatty acids. The results showed that the accumulations of saturated and unsaturated fatty acid, particularly the latter, were influenced by the environments. Oil content of soybean germlasms was relatively stable in the three tested sites. Oleic acid showed a highly significant negative correlation with linoleic acid, palmitic acid and linolenic acid in all the three tested sites. Variation coefficient of various fatty acids was different, of them, that of linolenic acid and stearic acid were higher, linoleic acid variation coefficient is lower. Variation coefficient among different environment was small. The correlation analysis showed oleic acid and linoleic acid, linolenic acid,palmitic acid showed a significant negative correlation in three environments, and the linoleic and linolenic acid content was significantly positively correlated. Oil and oleic acid was significantly positively correlated with linolenic acid, and it was significantly negatively correlated.