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Publication Type J
Authors Ghaffari, S. M., Z. Balaei, T. Chatrenoor and H. Akhani
Title Cytology of SW Asian Chenopodiaceae: new data from Iran and a review of previous records and correlations with life forms and C-4 photosynthesis
Source Plant Systematics and Evolution
Author Keywords Amaranthaceae Chenopodiaceae Cytology Desert ecosystems Iran-Turanian region Karyotype Polyploidy atriplex-canescens chenopodiaceae kranz anatomy chromosome-numbers plant polyploidy classification biogeography phylogeny evolution diversification
Abstract The mitotic chromosome numbers of 35 species belonging to 25 genera from East Azerbaijan Province of Iran and meiotic numbers of five species of Salicornia from different parts of Iran of family Chenopodiaceae are reported. Some of them are first reports and some are first counts from Iran. Based on a review of previously published reports, 145 species and 46 genera occurring in SW Asia have been cytologically studied either based on populations within or surrounding regions. The nomenclature and generic position of all these species are updated based on recent phylogenetic and taxonomic studies. The polyploidy percentage of 26.2 % is beyond the average known in flowering plants, which is surprising for dominant plants of saline and desert ecosystems. The polyploidy of annual plants is only 16 % and that of perennials 19 %, respectively. It was found that C-4 plants represent lower polyploidy levels than C-3 plants. This is correlated by the fact that large number of annuals in the area is C-4 and secondly, polyploidy may constrain niche advantageous in C-4 plants. However, presence of different cytotypes in the widespread species is advantageous as they can occupy different niches. The basic chromosome numbers in chenopods is x = 9 with few derived exceptions in Spinacia (x = 6), Camphorosma (x = 6) and some species of Petrosimonia (x = 8).
Author Address [Ghaffari, Seyed Mahmood] Univ Tehran, Inst Biochem & Biophys, Tehran, Iran. [Balaei, Zhila] Agr & Nat Resources Res Ctr, Tabriz, Iran. [Chatrenoor, Targol; Akhani, Hossein] Univ Tehran, Sch Biol, Dept Plant Sci, Tehran, Iran. [Chatrenoor, Targol; Akhani, Hossein] Univ Tehran, Ctr Excellence Phylogeny Living Organisms, Tehran, Iran. Akhani, H (reprint author), Univ Tehran, Sch Biol, Dept Plant Sci, POB 14155-6455, Tehran, Iran. ghaffari@ibb.ut.ac.ir; akhani@khayam.ut.ac.ir
ISSN 0378-2697
ISBN 0378-2697
29-Character Source Abbreviation Plant Syst. Evol.
Publication Date Feb
Year Published 2015
Volume 301
Issue 2
Beginning Page 501-521
Digital Object Identifier (DOI) 10.1007/s00606-014-1109-6
Unique Article Identifier WOS:000348119800001
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