Chromosome counts and determination of ploid levels in Iranian species of Trifolium

Chromosome numbers in 140 accessions of 37 annual and perennial species of Trifolium L. in Iran were counted and studied here. The chromosome number of 2n=16 was documented in Trifolium radicasum in Iran. New cytotypes were found in Trifolium ambigum, T. fragiferum, T. montanum, T. nigrescens, T. st...

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Published inChromosome Botany Vol. 3; no. 2; pp. 53 - 63
Main Authors Salimpour, F., Sharifnia, F., Mostafavi, G., Hajrasoliha, Sh, Ukhneh, E.
Format Journal Article
LanguageEnglish
Published International Society of Chromosome Botany 2008
Subjects
Chromosomes
Fabaceae Polyploid
Iran
Trifolium
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Summary:Chromosome numbers in 140 accessions of 37 annual and perennial species of Trifolium L. in Iran were counted and studied here. The chromosome number of 2n=16 was documented in Trifolium radicasum in Iran. New cytotypes were found in Trifolium ambigum, T. fragiferum, T. montanum, T. nigrescens, T. stellatum and T. tumens. This study deposited more data in chromosome numbers of Trifolium to determine the genus has high diversity of ploid level. Their karotypic formula showed that the most of the chromosomes were median-, submedian- or terminal-centromeric. The smallest chromosomes were found in Sections Versicaria and Mistyllus, while the largest chromosomes were found in Sections Trifolium and Tricocephalum. Thus, Trifolium seemed to be heterogeneous with respect to morphological characters of chromosomes.
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ISSN:1881-5936
1881-8285
DOI:10.3199/iscb.3.53