Diversity of citron (Citrus medica) and phylogenetic analysis of related citron hybrids using molecular markers and essential oil composition

Luro François, Venturini Nicolas, Costantino Gilles, Tur Isabelle, Paolini Julien, Ollitrault Patrick, Costa Jean. 2015. Diversity of citron (Citrus medica) and phylogenetic analysis of related citron hybrids using molecular markers and essential oil composition. In : Proceedings of the XIIth International Citrus Congress: International Society of Citriculture. Navarro Luis (ed.), Sabater-Muñoz Beatriz (ed.), Moreno Pedro (ed.), Peña Leandro (ed.). ISHS. Leuven : ISHS, 125-133. (Acta Horticulturae, 1065) ISBN 978-94-62610-53-8 International Citrus Congress: Citrus and Health. 12, Valence, Espagne, 18 Novembre 2012/23 Novembre 2012.

Résumé : Citrus diversity is known to be essentially supported by three essential basic species, mandarin, pummelo and citron, which are at the origin of quite all the cultivated citrus. Based on studies of phenotype, the citron group (Citrus medica) is supposedly low in genetic diversity compared to mandarins and pummelos. To assess the diversity of the citron group we analyzed the molecular polymorphism of nuclear and cytoplasmic genetic markers and the variation in composition of essential oils from leaves and peels of 24 varieties of citron or apparent hybrids of citron. Our results demonstrate that the citron group has a relatively high allelic diversity, probably due to multiple introductions of different varieties. Self-fertilization was the mode of reproduction which most frequently led to the development of commercial varieties with specific aromas and flavors, such as the cultivar 'Corsican', a putative 'Common Poncire' self-crossed hybrid. However, some varieties appeared to be interspecific hybrids related to citron but only by the male parent. This varietal diversity was probably favored by spreading seeds to extend the cultivation of citron in Mediterranean countries. The chemical diversity does not always correspond to genetic diversity but nevertheless reveals specific profiles associated with some genotypes.

Classification Agris : F30 - Génétique et amélioration des plantes
F70 - Taxonomie végétale et phytogéographie

Auteurs et affiliations

• Luro François, INRA (FRA)
• Venturini Nicolas, CNRS (FRA)
• Costantino Gilles, INRA (FRA)
• Tur Isabelle, INRA (FRA)
• Paolini Julien, CNRS (FRA)
• Ollitrault Patrick, CIRAD-BIOS-UMR AGAP (ESP) ORCID: 0000-0002-9456-5517
• Costa Jean, CNRS (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/567270/)

Métriques

[ Page générée et mise en cache le 2024-03-30 ]