Morpho-Agronomic and Fatty Acid Composition Variations in Flax (Linum usitatissimum L.) Germplasms of Different Geographic Origins

文献类型： 外文期刊

第一作者： Piao, Xiang-Min

作者： Piao, Xiang-Min;Yu, Ying;Zhou, Chunyuan;Ouyang, Yanfei;Xing, Liwei;Guo, Jing;Meng, Lu-lu;Han, Sin-Hee

作者机构：

关键词： Fatty Acid Composition;Flax;Geographic Origin;Morpho-Agronomic

期刊名称：JOURNAL OF BIOBASED MATERIALS AND BIOENERGY （ 影响因子：0.708； 五年影响因子：0.739 ）

ISSN： 1556-6560

年卷期： 2016 年 10 卷 2 期

页码：

收录情况： SCI

摘要： This study examined the inter-relationships of the morphological traits, oil content, and fatty acid composition among flax accessions of different geographical origins to investigate the quality and utilization options and to guide selection programs for adaptive varieties of flax. The high diversity found in the flax germplasm indicates significant potential for improving flax seed quality. K902938 from Russia was selected as an elite genetic resource to improve flax quality due to its high single plant yield (8.26 g), oil content (34%), and alpha-linolenic acid (ALA) composition (55.6%). The thousand-seed weight showed a significant positive correlation (r = 0.538, p < 0.01) with oil content, indicating that large seed accessions have a higher oil content than small seed accessions. A principal component analysis showed that the first three principal components (PCs) explained 63% of the total variability among the accessions for all traits investigated. PC1, PC2, and PC3 explained 35%, 1%, and 13% of the variation, respectively. Based on a cluster analysis, 78 flax accessions were classified into four groups: Cluster I (n = 27), Cluster II (n = 17), Cluster III (n = 5), and Cluster IV (n = 29). Cluster II, which contained 17 accessions, is recommended as an elite line due to the short stature, high yield, and high oil and ALA contents of its members. PC and cluster analyses can be used to categorize genetic resources to guide decisions about breeding.

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