【摘要】 为了进一步鉴定和评价亚麻种质资源的脂肪酸组分含量,采用近红外仪检测国内外102份亚麻种质的棕榈酸、硬脂酸、油酸、亚油酸、亚麻酸5种脂肪酸含量,用统计学方法分析遗传多样性和相关性。结果表明,5种脂肪酸含量变异系数为11.78%～35.61%,依次排序为硬脂酸>亚油酸>油酸>亚麻酸>棕榈酸;遗传多样性指数为1.84～2.31,依次排序为硬脂酸>亚麻酸>棕榈酸>亚油酸>油酸。相关性分析结果表明,棕榈酸与硬脂酸含量呈极显著正相关(r=0.672),与油酸含量呈显著负相关(r=-0.353);亚麻酸与硬脂酸、油酸、亚油酸呈极显著负相关。聚类分析结果表明,将102份亚麻种质分为4个类群,第一类群包括12份种质,第二类群包括58份种质,第三类群包括26份种质,第四类群包括6份种质。更多还原

【Abstract】 In order to further identify and evaluate the fatty acid content of flax germplasm resources, the contents of palmitic acid, stearic acid, oleic acid, linoleic acid and linolenic acid in 102 flax germplasm resources at home and abroad were detected by near infrared spectroscopy. The results showed that the variation coefficients of five fatty acids were 11.78%-35.61%, and the order was stearic acid > linoleic acid > oleic acid > linolenic acid > palmitic acid; The genetic diversity index ranged from 1.84 to 2.31, and the order was stearic acid > linolenic acid > palmitic acid > linoleic acid > oleic acid; Correlation analysis showed that palmitic acid was positively correlated with stearic acid(r = 0.672) and negatively correlated with oleic acid(r =-0.353); Linolenic acid was negatively correlated with stearic acid, oleic acid and linoleic acid. Cluster analysis showed that 102 flax germplasms were divided into 4 groups. The first group included 12 germplasms, the second group included 58 germplasms, the third group included 26 germplasms, and the fourth group included 6 germplasms.更多还原