Plant Biology Unit, Gembloux Agro-Bio Tech, University of Liège, Gembloux.
Chem Biodivers. 2012 Jul;9(7):1389-402. doi: 10.1002/cbdv.201100306.
Cananga odorata (Lam.) Hook.f. & Thomson forma genuina (Annonaceae) is a tropical tree, grown for the production of ylang-ylang essential oil, which is extracted from its fresh and mature flowers. Despite its economic and social importance, very little information is available on its variability and the possible factors causing it. Therefore, the relationship between the genetic structure, revealed by amplified fragment length polymorphism (AFLP), and the essential oil chemical composition, determined by GC/MS analysis, of ylang-ylang grown in semi-managed systems in three Indian Ocean islands (Grande Comore, Mayotte, and Madagascar) was investigated. Our results revealed a low genetic variation within plantations and contrasted situations between islands. Variations of the chemical composition could be observed within plantations and between islands. The genetic differentiation pattern did not match the observed pattern of chemical variability. Hence, the chemical variation could not be attributed to a genetic control. As Grande Comore, Madagascar, and Mayotte present different environmental and agronomic conditions, it can be concluded that the influence of these conditions on the ylang-ylang essential oil composition is consistent with the patterns observed. Finally, several strategies were proposed to valorize the chemical composition variations.
依兰（Cananga odorata (Lam.) Hook.f. & Thomson forma genuina）为番荔枝科依兰属植物，是一种热带树种，主要用于生产依兰依兰精油，其精油由新鲜和成熟的花朵提取而来。尽管依兰具有重要的经济和社会价值，但关于其变异性和可能导致变异性的因素的信息却很少。因此，研究了在印度洋三个岛屿（葛摩大科摩罗岛、马约特岛和马达加斯加岛）的半人工系统中种植的依兰的遗传结构（通过扩增片段长度多态性 AFLP 揭示）与精油化学成分（通过 GC/MS 分析确定）之间的关系。我们的研究结果表明，种植园内的遗传变异较低，而岛屿之间的情况则形成鲜明对比。在种植园内和岛屿之间可以观察到化学成分的变化。遗传分化模式与观察到的化学变异模式不匹配。因此，化学变异不能归因于遗传控制。由于大科摩罗岛、马达加斯加岛和马约特岛具有不同的环境和农业条件，可以得出结论，这些条件对依兰精油成分的影响与观察到的模式一致。最后，提出了几种策略来利用化学成分的变化。
