Comparison of the fine-scale genetic structure of three dipterocarp species
Comparison of the fine-scale genetic structure of three dipterocarp species
复制标题
DOI：
10.1038/sj.hdy.6800411
复制
发表时间：
2004-04
期刊：
影响因子：
3.8
通讯作者：
Yayoi Takeuchi;Yayoi Takeuchi;S. Ichikawa;A. Konuma;N. Tomaru;K. Niiyama;S. Lee;N. Muhammad;Y. Tsumura
中科院分区：
文献类型：
--
作者：
Yayoi Takeuchi;Yayoi Takeuchi;S. Ichikawa;A. Konuma;N. Tomaru;K. Niiyama;S. Lee;N. Muhammad;Y. Tsumura
我们调查了马来西亚半岛三种热带雨林树木（Hopea dryobalanoides、Shorea parvifolia 和 S. acuminata（龙脑香科））的精细遗传结构，所有这些树木同时出现在巴索森林保护区 6 公顷的地块内。在 H. dryobalanoides 中发现了显着的遗传结构，在 S. parvifolia 中发现了较弱（但仍然显着）的遗传结构，在 S. acuminata 中发现了不显着的结构。这三个物种的种子都是通过风传播的，它们的花被认为是通过昆虫授粉的。这些物种之间最明显的区别是它们的高度：S. parvifolia 和 S. acuminata 是冠层物种，而 H. dryobalanoides 是亚冠层物种。这些物种的种子传播范围也存在明显差异，这取决于释放点的高度；因此，较高的树可以更广泛地传播种子。种子传播面积的估计与三个物种中发现的遗传结构程度一致。因此，树高可能对这三个物种的精细遗传结构有很大影响。遗传 (2004) 92, 323-328。 doi：10.1038/sj。哈迪。 6800411 在线发布 2004 年 1 月 21 日
We investigated the fine-scale genetic structure of three tropical-rainforest trees, Hopea dryobalanoides, Shorea parvifolia and S. acuminata (Dipterocarpaceae), in Peninsular Malaysia, all of which cooccurred within a 6-ha plot in Pasoh Forest Reserve. A significant genetic structure was found in H. dryobalanoides, weaker (but still significant) genetic structure in S. parvifolia and nonsignificant structure in S. acuminata. Seeds of all three species are wind dispersed, and their flowers are thought to be insect pollinated. The most obvious difference among these species is their height: S. parvifolia and S. acuminata are canopy species, whereas H. dryobalanoides is a subcanopy species. Clear differences were also found among these species in their range of seed dispersal, which depends on the height of the release point; so taller trees disperse their seed more extensively. The estimates of seed dispersal area were consistent with the degree of genetic structure found in the three species. Therefore, tree height probably had a strong influence on the fine-scale genetic structure of the three species. Heredity (2004) 92, 323-328. doi: 10.1038/sj. hdy. 6800411 Published online 21 January 2004