A comparative study of chromosome morphology among some genotypes of Cicer arietinum L.

Kordi, F.M. and Majd, A. and Valizadeh, M. and Sheida, M. and Sabaghpourm, H. (2006) A comparative study of chromosome morphology among some genotypes of Cicer arietinum L. Pakistan Journal of Biological Sciences, 9 (7). pp. 1225-1230.

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Karyotypic analysis was performed for 11 genotypes of chickpea (Cicer arietinum L.) in order to determine their potential genetic relationships. Pretreatment of root tips in 8-hydroxyquinoline, followed by fixation in Lewitsky solution and hydrolysis in 1N NaOH at 60°C, then staining in aceto-iron-hematoxylin for 15-20 h, confirmed a somatic chromosome number of 2n = 16 in all genotypes. This karyotype consisted of: a pair with the longest satellited submetacentric chromosome, a pair with the shortest metacentric chromosome and six pairs of metacentric to submetacentric chromosomes. Intraspecific variabilities were observed for haploid chromosome length, primary constriction position and karyotypic formula. But all of the studied genotypes showed the same karyotype asymmetry, 1B. Haploid genome length ranged from 24.88 μm±0.50 in G6 (Bieanij cv) to 18.48±0.60 μm in G10 (Flip93-93c cv). Cluster analysis classified the 11 genotypes in three groups, having different sizes of chromosomes and arms.

Item Type: Article
Author Affiliation: Department of Biology, Teacher Training University, Dr Moffatech Ave. No.49, Tehran, Iran
Subjects: Crop Improvement > Genetics/Genomics
Divisions: Chickpea
Depositing User: Mr T L Gautham
Date Deposited: 15 Dec 2010 21:02
Last Modified: 15 Dec 2010 21:02
Official URL: http://scialert.net/qredirect.php?doi=pjbs.2006.12...
URI: http://eprints.icrisat.ac.in/id/eprint/1030

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