Phylogeny of Onobrychis sect. Hymenobrychis (Fabaceae) based on chloroplast DNA sequence data
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJGPB-5-2_002
تاریخ نمایه سازی: 15 آذر 1400
Abstract:
Phenetic analysis of morphological characters in different species of Onobrychis Miller sect. Hymenobrychis DC. (Fabaceae), classified them in two main groups based on corolla features. To determine the phylogenetic relationships among the ۱۳ species, chloroplast DNA sequences were used. Analysis of these data resulted in a well-resolved and well-supported phylogeny. Phylogenies generated by maximum likelihood show monophyly of O. sect. Hymenobrychis and the division of the section into two major clades. The first branching clade was formed by all the species of the section with large flowers, a yellowish corolla with or without venation and some species having a larger chromosome number (x=۸ vs x=۷). The second major clade includes the remaining species studied, all of which have small flowers, a yellowish corolla with or without venation or purple maculae and the common number of chromosomes (x=۷). The compliance of the molecular, morphological and cytogenetic data indicates that x=۸ is ancestral in the section and x=۷ are derived through an aneuploid loss of a chromosome. The resulting phylogeny suggests the Zagros area as an origin of evolution in the sect. Hymenobrychis, followed by a radiation to the Alborz area in Iran.
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Authors
فاطمه حاج مرادی
Department of Biology, Payame-Noor University, P. O. Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran.
مسعود رنجبر
Department of Biology, Herbarium division, Bu--Ali Sina University, Hamedan, Iran.
میشل وایکت
School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, ۵۰۰۱, South Australia, Australia.
کورجنت ون دیک
School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, ۵۰۰۱, South Australia, Australia.
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