Morphological and molecular diversity of Tunisian chickpea

K. Khamassi, L Bettaieb Ben Kaab, S Khoufi, R. Chaabane, Jaime A. da Silva, I. J. Mackay, M. Ben Naceur

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The objective of this study was to evaluate the genetic diversity and relationships among 6 new improved lines, one spring landrace and 6 varieties of winter chickpea (Cicer arietinum L.). To achieve this, 16 polymorphic simple sequence repeats (SSRs) were used in the DNA analysis. A total of 554 bands were generated with an average of 2.16 detectable bands/primer/genotype. The within-genotype genetic dissimilarity coefficient ranged from 13.0 to 77.7. Cluster analysis indicated that most genotypes could be clustered into four groups according to their geographic origin, selection objectives or pedigree. Moreover, morphological analyses generated clusters similar to those generated by molecular studies. Indeed, a comparison of morphological and molecular data using the Mantel test showed a highly significant correlation (r = 0.554, P < 10 -5 ), indicating that SSR primers used in this study likely cover a vast area of the chickpea genome or might flank chromosome regions that control quantitative traits or resistance to Ascochyta blight or wilt. This also means that different combinations of alleles might reproduce similar morphological traits. In this sense, the two methods showed a low degree of variation among analysed genotypes, indicating the narrow genetic base of Tunisian chickpea germplasm. It also showed that the Tunisian chickpea collection should be increased by increasing diversity by importing new genotypes or by inducing mutations which could be used for future breeding programs. © Verlag Eugen Ulmer KG, Stuttgart.
Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalEuropean Journal of Horticultural Science
Volume77
Issue number1
Publication statusPrint publication - 2012
Externally publishedYes

Keywords

  • Chickpea
  • Cicer arietinum L.
  • Mantel test
  • Morphological traits
  • SSR markers

Fingerprint Dive into the research topics of 'Morphological and molecular diversity of Tunisian chickpea'. Together they form a unique fingerprint.

Cite this