Total ion chromatogram of fatty acids in the seed oils of two cultivars, namely, ‘M3’ (a) and ‘M8’ (b), and dynamic changes in fatty acid compositions in the seed oils of the cultivars ‘M3’ (c) and ‘M8’ (d) during seed development. C16:0 palmitic acid, C18:0 stearic acid, C18:1 oleic acid, C18:2 linoleic acid, C18:3 linolenic acid, C20:1 arachidonic acid