Genetic diversity in apple tree cultivars established in the Sierra de Arteaga, Coahuila, Mexico

Genetic diversity in apple tree cultivars established in the Sierra de Arteaga, Coahuila, Mexico

Mayra Alejandra Escobar-Saucedo, Cristóbal Aguilar, Antonio Vázquez-Ramos, Manuel Humberto Reyes-Valdés, Raúl Rodríguez-Herrera

Apple production in the Sierra de Arteaga, Coahuila is mainly based on the Golden Delicious cultivar.Production based on only a few cultivars represents a genetic risk, because if they are susceptible to a pest, diseaseor climate change much of this production would be lost if one or more of these conditions occurred. Foreseeing thissituation, farmers have introduced dierent commercial apple cultivars, but there is little information about the geneticdiversity among them. Therefore, the aim of this study was to estimate the rates of intraspecic genetic diversity of 12dierent apple cultivars using inter-simple sequence repeat (ISSR) molecular markers. Employing nine ISSR primers,it was possible to identify 124 DNA bands, of which 63% were polymorphic, with genetic diversity of 0.24. Resultssuggest that these cultivars are adapted to the region's climate and can be utilized to increase the overall plantationarea, in order not to depend on a single cultivar.

2018

ISSR, Malus domestica Borkh, chilling units, genetic diversity, polymorphism

10.19136/era.a5n13.1276

Ecosistemas y Recursos Agropecuarios

Universidad Juárez Autónoma de Tabasco

Agriculture