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Genetic diversity in Tunisian populations of faba bean (Vicia faba L.) based on morphological traits and molecular markers

Genetic diversity in Tunisian populations of faba bean (Vicia faba L.) based on morphological traits and molecular markers

Genetics and Molecular Research 14(3): 7587-7596

Genetic diversity within Vicia faba L. is key to the genetic improvement of this important species. In this study, morphological traits and RAPD molecular markers were used to assess the levels of polymorphism across 12 Tunisian populations, three major and nine minor from different locations. Analysis of morphological traits indicated that the three major populations showed significant differences and the nine minor populations exhibited considerable variation for most traits. The grain yield of the Alia population could be increased by inoculation. Of the seven primers tested, it was clear that the Cs12 primer would be recommend for genetic diversity analysis of V. faba.Within population genetic diversity exhibited 94% of total diversity. Intra-population genetic diversity (HS) was 0.16, which was clearly higher than between population genetic diversity (DST = 0.06) UPG-MA showed a high level of genetic variation between major and minor populations of V. faba L. Particularly the minor populations showed a high level of diversity and was divided into two subclusters. Ltaifia was separated from the other populations. In addition to a high grain yield, these populations showed the lowest Nei and Shannon indices (H = 0.08 and I = 0.13) justifying their homogeneity. For these reasons, these cultivars can be considered a selected population. However, the Takelsa population showed the highest Nei and Shannon indices (H = 0.13 and I = 0.21), indicating that this population was the most heterogeneous, which is interesting for breeding programs.

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Accession: 057930250

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PMID: 26214437

DOI: 10.4238/2015.july.13.2

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