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An approach to chemotaxonomy to the fatty acid content of some Malvaceae species

机译:化学分类学对一些锦葵科物种脂肪酸含量的方法

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摘要

Malvales is an order of flowering plants with a controversial circumscription. The relationships between taxa, particularly Malvaceae, Bombacaceae, Sterculiaceae, and Tiliaceae, are not well delineated. Several studies have reported the fatty acid compositions of Malvaceae plants but not for taxonomic purposes. In the present study, the fatty acid composition of oilseeds from seven species belonging to the Malvaceae family was determined by capillary gas chromatography/mass spectrometry (GC/MS), and the quantitative distribution of fatty acids was analyzed by a cluster analysis With Euclidean Distance and UPGMA. The oil content in the seeds was very low (8.3-11.8%). The profile of fatty acids showed that there were two distinct groups: species rich in palmitic acid (Herissantia tiubae, Sidastrum paniculatum and Sida rhombifolia) and species rich in linoleic acid (other Sida species). The fatty acid profiles found for Sida species are consistent with other reported data. Although our data support a distinction between Sida and Sidastrum, more species should be analyzed to evaluate the real taxonomic value of differences in fatty acid content for distinguishing Malvaceae
机译:锦葵属是一种有争议的限定性开花植物。并没有很好地描述分类单元之间的关系,尤其是锦葵科,孟买科,硬皮科和T科。几项研究报告了锦葵科植物的脂肪酸组成,但并非用于分类目的。在本研究中,通过毛细管气相色谱/质谱法(GC / MS)测定了属于锦葵科的7个树种的油料种子的脂肪酸组成,并通过欧氏距离聚类分析法分析了脂肪酸的定量分布和UPGMA。种子中的油含量非常低(8.3-11.8%)。脂肪酸的概况表明,有两个不同的组:富含棕榈酸的物种(Herissantia tiubae,Sidastrum paniculatum和Sida rhombifolia)和富含亚油酸的物种(其他Sida物种)。针对Sida物种发现的脂肪酸谱与其他报道的数据一致。尽管我们的数据支持Sida和Sidastrum的区分,但应分析更多种类来评估脂肪酸含量差异的真实分类学价值,以区分锦葵科

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