Genetic Variation in the Tunisian Date Palm (Phoenix dactylifera L.)

Autor: Ahmed Othmani, Soumaya Rhouma, Salwa Zehdi-Azouzi, Emira Cherif, Mohamed Marrakchi, Sonia Dakhlaoui-Dkhil, Ali Ould Mohamed Salem, Mokhtar Trifi
Rok vydání: 2009
Předmět:
Zdroj: Desert Plants ISBN: 9783642025495
DOI: 10.1007/978-3-642-02550-1_17
Popis: The date palm - one of the oldest domesticated fruit crops - is the tree most adapted to growing in desert areas. It has always been looked upon as a key source of stability, survival and evolution of the oasis agro-system as it constitutes the basic features of the ecological pyramid in desert regions. Tunisian date palm germplasm is characterised by high genetic diversity, with more than 250 varieties identified. However, this patrimony is seriously menaced by severe genetic erosion due to different biotic and abiotic factors. In Tunisia, as well as in North African countries, dates are cultivated for fruit production, and all parts of the tree are used for many other artisanal and/or industrial purposes. Recent efforts have focussed on the development of phenotypic, biochemical and DNA-based markers useful in characterising the genetic diversity of date palm populations and to establish the relationships between different cultivars. This chapter reviews current efforts made towards developing such selection markers for Tunisian date palm cultivars for use in breeding programmes.
Databáze: OpenAIRE