36th International Carrot Conference Abstract

Genetic diversity of wild carrot in the Mediterranean island of Corsica

Mohamed Maghraoui¹ , Matthieu Jourdan¹², Audrey Chaput-Bardy⁴ , Jean-Pierre Reduron⁵, Alain Delage⁶, Sébastien Huet¹, Cécile Dubois-laurent¹, Valérie Le Clerc¹, Mathilde Briard¹, Didier Peltier², Emmanuel Geoffriau^1*

¹ AGROCAMPUS OUEST, UMR1345 Institut de Recherche en Horticulture et Semences, SFR 4207 QUASAV, F-49045 Angers , France
² Université d’Angers, UMR1345 Institut de Recherche en Horticulture et Semences, SFR 4207 QUASAV F-49045 Angers, France
³ INRA, UMR1345 Institut de Recherche en Horticulture et Semences, SFR 4207 QUASAV F-49071 Beaucouzé, France
⁴ Université d’Angers Labo Ecologie ?
⁵ VIA APIA, F-68100 Mulhouse
⁶ Conservatoire Botanique National de Corse, Office de l’Environnement de la Corse, F-20250 Corte

* Presenting and corresponding author: emmanuel.geoffriau@agrocampus-ouest.fr

The Corsica Island has a specific position between the continental France and the Mediterranean basin, and has been described for the richness of its flora. Therefore, Corsica recovers a potentially important diversity for the wild relatives of the cultivated carrot.

Prospecting missions were conducted in 2009 and 2011. A total of 36 populations were collected, including 2 sub-species found in France only in Corsica. The collecting sites were described and the populations were characterized in situ and ex situ.

A study of genetic diversity within and between populations was also conducted by microsatellite markers. The SSR markers revealed an important polymorphism, the number of alleles per locus ranging between 5 and 39. The analysis of diversity indices showed a high genetic diversity within populations, promoted by the out-crossing mating system of the species. The study of the genetic structure was conducted using different approaches (genetic differentiation, dispersal of individuals and Bayesian analysis). These analyzes showed differentiation into different genetic groups based both on geographical and taxonomical factors. The results of this study confirm the specific interest of some populations, and support the taxonomic distinction of two subgroups. This study should allow the implementation of a strategy for management of these resources, justified by the observed high genetic diversity.

Last updated Friday, 02-Aug-2013 12:11:54 CDT