Effects of Sowing Season on Agronomic Traits and Fatty Acid Metabolic Profiling in Three Brassica napus L. Cultivars

文献类型： 外文期刊

第一作者： Li, Xiaoyi

作者： Li, Xiaoyi;Qiu, Guoliang;Wang, Tao;Liu, Chunhong;Liu, Zhibin;Wu, Lintao;Feng, Bin;Yang, Yongming;Chen, Cun;Zhang, Wei

作者机构：

关键词： Brassica napus; human consumption; fatty acid; oleic acid

期刊名称：METABOLITES （ 影响因子：4.932； 五年影响因子：4.98 ）

ISSN： 2218-1989

年卷期： 2019 年 9 卷 2 期

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收录情况： SCI

摘要： Decreasing saturated fatty acids and increasing monounsaturated fatty acids are desirable to improve oil for food. Seed oil content and fatty acid composition are affected by genotype and environment. Therefore, we systematically analyzed the agronomic traits and fatty acid metabolic profiling of Brassica napus (B. napus) seeds at different developmental stages in high level of oleic acid (HOA), medium level of oleic acid (MOA), and low level of oleic acid (LOA) B. napus cultivars, both sown in winter and summer. The results showed that all winter-sown cultivars produced 20% more seed yield than the summer-sown crop. The longer growing period of winter-sown B. napus resulted in higher biomass production. However, the fatty acid metabolism of individual cultivars was different between winter-sown rape (WAT) and summer-sown rape (SAT). The absolute fatty acid content of LOA and MOA cultivars in WAT were significantly higher than that in SAT, but that of HOA was opposite. Importantly, the levels of monounsaturated fatty acids (18:1; 20:1) in SAT were far more than those in WAT. These data indicate the quality of oil from the HOA in SAT is more suitable for human consumption than that in WAT.

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