Analysis of genetic diversity of Tunisian caprifig ( L.) accessions using simple sequence repeat (SSR) markers.

Hereditas

Subtropical Fruit Crops Department, Instituto de Hortofruticultura Subtropical y Mediterránea la Mayora', (IHSM-CSIC-UMA), 29750 Algarrobo-Costa, Málaga, Spain.

Published: July 2017

AI Article Synopsis

  • The common fig has two types: male caprifigs and female trees that produce edible figs.
  • Genetic analysis of 20 Tunisian caprifig accessions showed 37 alleles, with an average of 2.85 alleles per locus, indicating low genetic diversity.
  • The study found no significant geographical grouping of caprifigs, suggesting that plant material is commonly exchanged across different regions in Tunisia.

Article Abstract

Background: The common fig ( L.) is a gynodioecious species with two sexual forms: male trees (caprifigs) with male and female flowers and female trees that produce only female flowers that will result in the edible fig syconium. In this study the genetic diversity of 20 Tunisian accessions of caprifig is analyzed using SSR markers previously developed for this crop.

Results: The results revealed that the 13 pairs of primers used amplified a total of 37 alleles in the accessions studied. The number of alleles per locus ranged from two to six, with a mean value of 2.85 alleles per locus. Observed and expected heterozygosities showed mean values of 0.33 and 0.29 respectively. UPGMA cluster analysis and Principal Component Analysis grouped the caprifig accessions analyzed in three groups.

Conclusion: The results obtained show a low genetic diversity in the Tunisian accessions of caprifig studied and, in spite of analyzing samples from different geographic regions, no clear groupings based on geographical origin are observed suggesting widespread exchange of caprifig plant material through vegetative propagation among different areas in Tunisia.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5224586PMC
http://dx.doi.org/10.1186/s41065-015-0002-9DOI Listing

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