INVESTIGATIONS INTO THE EVOLUTIONARY HISTORY OF THE ANTENNARIA-ROSEA (ASTERACEAE, INULEAE) POLYPLOID COMPLEX
INVESTIGATIONS INTO THE EVOLUTIONARY HISTORY OF THE ANTENNARIA-ROSEA (ASTERACEAE, INULEAE) POLYPLOID COMPLEX
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DOI：
10.1007/bf00935988
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发表时间：
1990-01-01
影响因子：
1.9
通讯作者：
BAYER, RJ
中科院分区：
文献类型：
--
作者：
BAYER, RJ
玫瑰花多倍体无融合生殖复合体是北美触角藻中形态最多样、分布最广的复合体之一。该类群在分类学上是令人困惑的，因为有许多被认为是不同的种的无精子植物微型种。形态计量学分析表明，该复合体形态变异的主要来源是6个有性繁殖后代，即芳香A.aromatica、A.corymbosa、A.media、A.microPhylla、A.racemona和A.umbrinella。此外，另外两种有性繁殖的物种--边缘红曲霉和玫瑰红曲霉，可能也是玫瑰红曲霉复合体遗传复杂性的原因之一。聚类分析表明，玫瑰花复合体内存在四个不同的形态群。每一组可能是来自不同有性祖先组的基因占优势的结果。由于罗西是一个多杂交起源，从几个有性祖先中，建议将罗西作为有性祖先中的一个不同物种。
The Antennaria rosea polyploid agamic complex is one of the most morphologically diverse and widespread complexes of N. American Antennaria. The group is taxonomically confusing because of numerous agamospermous microspecies, having been recognized as distinct species. Morphometric analyses have demonstrated that the primary source of morphological variability in the complex derives from six sexually reproducing progenitors, A. aromatica, A. corymbosa, A. media, A. microphylla, A. racemona, and A. umbrinella. Additionally, two other sexually reproducing species, A. marginata and A. rosulata, may have contributed to the genetic complexity of the A. rosea complex. Cluster analysis indicates that four discrete morphological groups exist within the A. rosea complex. Each group could be the result of predominance of genes from different groups of sexual progenitors. As A. rosea is a multiple hybrid origin, from among several sexual progenitors, it is advisable to recognize A. rosea as a distinct species from its sexual progenitors.