作者
Jennifer A Tate, Javier Fuertes Aguilar, Steven J Wagstaff, John C La Duke, Tracey A Bodo Slotta, Beryl B Simpson
发表日期
2005/4
期刊
American Journal of Botany
卷号
92
期号
4
页码范围
584-602
出版商
Botanical Society of America
简介
Phylogenetic relationships among genera of tribe Malveae (Malvaceae, subfamily Malvoideae) were reconstructed using sequences of the internal transcribed spacer (ITS) region of the 18S–26S nuclear ribosomal repeat. Newly generated sequences were combined with those available from previous generic level studies to assess the current circumscription of the tribe, monophyly of some of the larger genera, and character evolution within the tribe. The ITS data do not support monophyly of most generic alliances as presently defined, nor do the data support monophyly of several Malveae genera. Two main well‐supported clades were recovered, which correspond primarily to taxa that either possess or lack involucral bracts, respectively. Chromosomal evolution has been dynamic in the tribe with haploid numbers varying from n = 5 to 36. Aneuploid reduction, hybridization, and/or polyploidization have been …
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JA Tate, J Fuertes Aguilar, SJ Wagstaff, JC La Duke… - American Journal of Botany, 2005