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Metabolites 2019, 9(2), 37; https://doi.org/10.3390/metabo9020037

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

1
Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
2
Rape Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550008, China
3
Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
4
College of Chemistry and Life Science, Chengdu Normal University, Chengdu 611130, China
5
College of Bioengineering, Sichuan University of Science & Engineering, Zigong 643000, China
*
Author to whom correspondence should be addressed.
Xiaoyi Li and Lintao Wu contributed equally to this work.
Received: 20 December 2018 / Revised: 6 February 2019 / Accepted: 14 February 2019 / Published: 22 February 2019
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Abstract

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. View Full-Text
Keywords: Brassica napus; human consumption; fatty acid; oleic acid Brassica napus; human consumption; fatty acid; oleic acid
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Li, X.; Wu, L.; Qiu, G.; Wang, T.; Liu, C.; Yang, Y.; Feng, B.; Chen, C.; Zhang, W.; Liu, Z. Effects of Sowing Season on Agronomic Traits and Fatty Acid Metabolic Profiling in Three Brassica napus L. Cultivars. Metabolites 2019, 9, 37.

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