Department of Agronomy, College of Agricultural Sciences, Shahed University, Tehran, Iran.
C R Biol. 2010 Mar;333(3):248-54. doi: 10.1016/j.crvi.2009.10.001. Epub 2010 Feb 11.
Vegetable oils with a high relative amount of unsaturated fatty acids are of great significance for human health. There is not any data on the effects of tillage practices on fatty acid composition of canola (Brassica napus L.). Hence, in a 2-year split plot experiment, the effects of different tillage systems (no (NT), minimum (MT) and conventional tillage (CT)), canola genotypes (Hyola 401 (V1) and PF (V2)) and sowing dates (including Sep. 8, 23 and Oct. 7) on the fatty acid composition of canola were evaluated. Tillage practices and the combination of canola genotypes and sowing dates were randomized to the main and sub-plots, respectively. The highest oleic acid content was the result of combining NT, V1 and Sep. 23, and the lowest was related to the combination of CT, V2 and Oct. 7. While the combination of NT, V1 and D1 resulted in the highest amount of unsaturated fatty acids, this amount was the lowest for the combination of CT, V2 and Sep. 23. For the selection of an appropriate canola producing strategy, all these parameters must be taken into account. The combination of NT, V1 and Sep. 23 may be the most favorable cropping strategy for canola production under a Mediterranean climate.
高比例不饱和脂肪酸的植物油对人类健康具有重要意义。目前还没有关于耕作方式对油菜（Brassica napus L.）脂肪酸组成影响的数据。因此，在一项为期两年的裂区试验中，研究了不同耕作方式（不耕（NT）、少耕（MT）和传统耕（CT））、油菜基因型（Hyola 401（V1）和 PF（V2））和播种日期（包括 9 月 8 日、23 日和 10 月 7 日）对油菜脂肪酸组成的影响。耕作方式和油菜基因型与播种日期的组合分别随机分配到主区和副区。NT、V1 和 9 月 23 日的组合导致油酸含量最高，而 CT、V2 和 10 月 7 日的组合则导致油酸含量最低。而 NT、V1 和 D1 的组合导致不饱和脂肪酸含量最高，CT、V2 和 9 月 23 日的组合则导致不饱和脂肪酸含量最低。为了选择合适的油菜生产策略，必须考虑所有这些参数。在地中海气候下，NT、V1 和 9 月 23 日的组合可能是油菜生产最有利的种植策略。
