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本文比较了大豆低亚麻突变体（Ａ５）及其诱导前体（Ａ６）亚麻酸合成位点ＭＧＤＧ的脂肪酸变化。研究结果表明低亚麻突变体Ａ５的下胚轴、子叶、上胚轴和真叶中叶绿体被膜亚麻酸合成位点单半乳糖苷二酯酰（ＭＧＤＧ）上亚麻酸（１８∶３）水平均高于Ａ６相应组织。子叶中亚麻酸合成前体磷脂酰胆碱（ＰＣ）配比１８∶０／１８∶３（ｒ１８∶０／１８∶３＝０．８７２＊＊），１８∶１／１８∶３（ｒ１８∶１／１８∶３＝－０．９５８＊＊）以及１８∶２／１８∶３（ｒ１８∶２／１８∶３＝－０．９６５＊＊）分别呈高度显著正相关或负相关。Ａ６真叶中１８∶３水平皆高于上胚轴、子叶、下胚轴和幼根。诸组织中１６∶０、１８∶２和１８∶３水平变化尤为明显，而１８∶０和１８∶１变化较小。幼根中１６∶０和１８∶２水平均高于其他组织，且１８∶２高于１８∶３。
In this paper, we compared the fatty acid changes of low-flax mutants (A5) and its precursor (A6) in linolenic acid synthesis site MGDG. The results showed that the levels of linolenic acid (18: 3) in monolayer glyceryl diester (MGDG) at the linolenic acid synthesis sites in the hypocotyl, cotyledon, epicotyl and true leaf of low-flax mutant A5 were all high The corresponding organization in A6. Cotyledon linolenic acid synthesis precursor phosphatidylcholine (PC) ratio 18: 0/18: 3 (r18: 0/18: 3 = 0.872 **), 18: 1/18: 3 / 18: 3 = -0.958 **) and 18: 2/18: 3 (r18: 2/18: 3 = -0.965 **) were highly significant positive or negative correlation. A6 true leaves 18: 3 levels are higher than the hypocotyls, cotyledons, hypocotyls and young roots. The changes of 16:0, 18:2 and 18: 3 levels in all tissues were particularly obvious, while the changes of 18:0 and 18:1 were less. Roots 16:0 and 18: 2 levels were higher than other organizations, and 18: 2 higher than 18: 3.