Hamdiah Salem, Karas Lukáš, Houšková Kateřina, Van Damme Kay, Attorre Fabio, Vahalík Petr, Habrová Hana, Lvončík Samuel, Eler Klemen, Maděra Petr
Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic.
Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
Plants (Basel). 2022 May 26;11(11):1418. doi: 10.3390/plants11111418.
The endemic species (Burseraceae) on Socotra Island (Yemen) are of great local significance due to their various local ethnobotanical uses. However, despite the fact that these trees are endangered, little is known about their biology. We tested seed germination rates in controlled experiments (trials of 21 days) for two subsequent years and for nine endemic taxa of occurring on Socotra Island. For this, seeds were collected island-wide from a wide range of localities and for several populations per species. We observed differences in germination among species, among species and localities and among both years, which indicates that the development of seeds is strongly affected by external ecological factors. Although we noted a large variation in seed germination (relatively high in ), and half of the species showed relatively low mean daily germination, our study indicated that all endangered endemic Frankincense Tree taxa of Socotra harbor the potential for in situ conservation through recruitment, given that known impacts can be reduced in local replantation areas (e.g., grazing).
也门索科特拉岛上的特有物种（橄榄科）因其多种当地民族植物学用途而具有重大的地方意义。然而，尽管这些树木濒临灭绝，但人们对它们的生物学特性却知之甚少。我们在连续两年的对照实验（为期21天的试验）中，对索科特拉岛上出现的9种特有分类群进行了种子发芽率测试。为此，我们在全岛范围内从广泛的地点收集种子，每个物种收集了几个种群的种子。我们观察到不同物种之间、物种与地点之间以及两年之间发芽情况存在差异，这表明种子的发育受到外部生态因素的强烈影响。尽管我们注意到种子发芽存在很大差异（某些物种相对较高），并且一半的物种平均每日发芽率相对较低，但我们的研究表明，鉴于在当地重新种植区域（如放牧区域）可以减少已知的影响，索科特拉岛所有濒危的特有乳香树分类群都具有通过补充更新实现原地保护的潜力。
