Promiscuity in the Andes: Species Relationships in Polylepis (Rosaceae, Sanguisorbeae) Based on AFLP and Morphology
Promiscuity in the Andes: Species Relationships in Polylepis (Rosaceae, Sanguisorbeae) Based on AFLP and Morphology
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安第斯山脉的乱交：基于 AFLP 和形态学的 Polylepis（蔷薇科、地榆科）物种关系
DOI：
10.1043/05-25.1
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发表时间：
2006
期刊：
影响因子：
1.1
通讯作者：
Mahendra Kumar
中科院分区：
文献类型：
--
作者：
A. Schmidt‐Lebuhn;M. Kessler;Mahendra Kumar
摘要：利用 AFLP 和形态学数据重建 Polylepis（蔷薇科）的系统发育。形态学分析的结果与早期关于该属进化的假设很好地相关，显示出从具有大花序的高大、薄叶的树木到具有厚叶子和减少花序的小树的转变。虽然 AFLP 分析中也可以辨别基本的系统发育信号，但它在一定程度上被掩盖了，因为来自不同物种的样本有时根据地理邻近性而不是系统隶属关系进行聚类。该结构被解释为频繁杂交和基因渗入的指示。
Abstract AFLP and morphological data were used to reconstruct the phylogeny of Polylepis (Rosaceae). Results from the morphological analysis correlate well with earlier hypotheses about the evolution of the genus, showing a transition from tall, thin-leaved trees with large inflorescences to small trees with thick leaves and reduced inflorescences. While a basic phylogenetic signal is also discernible in the AFLP analysis, it is partly eclipsed in that samples from different species sometimes cluster according to geographic proximity rather than systematic affiliation. This structure is interpreted as indicative of frequent hybridization and introgression.