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Article

Molecular Characterization of Genetic Diversity in Apricot Cultivars: Current Situation and Future Perspectives

1
Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Avda. Montañana 930, 50059 Zaragoza, Spain
2
Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), 50013 Zaragoza, Spain
3
Subtropical Fruit Crops Department, Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora (IHSM La Mayora-CSIC-UMA), 29750 Algarrobo-Costa, Spain
4
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Cirilli
Agronomy 2021, 11(9), 1714; https://doi.org/10.3390/agronomy11091714
Received: 31 July 2021 / Revised: 24 August 2021 / Accepted: 25 August 2021 / Published: 27 August 2021
(This article belongs to the Special Issue Genetic Diversity Evaluation of the Fruit Trees)
In the recent years, an important renewal of apricot cultivars is taking place worldwide with the introduction of a large number of new releases, which are replacing traditional and local cultivars in many situations. To study the current genetic diversity, a group of 202 apricot accessions, including landraces and releases from breeding programs in several countries, has been characterized using 13 microsatellite markers. The diversity parameters showed higher diversity in modern releases than in landraces, but also suggested a loss of diversity associated with recent breeding. Two main clusters according to the pedigree origin of the accessions were clearly differentiated in the phylogenetic analysis based on Nei’s genetic distance. The first group comprised mostly European and North American traditional cultivars, and the second group included the majority of recent and commercial releases from breeding programs. Further population analyses showed the same clustering trend on the distribution of individuals and clusters, confirming the results obtained in the molecular phylogenetic analysis. These results provide a sight of the erosion and the decrease of the genetic diversity in the currently grown apricot and highlight the importance of preserve traditional cultivars and local germplasm to assure genetic resources for further breeding. View Full-Text
Keywords: apricot; genetic diversity; germplasm; microsatellites; population structure; Prunus armeniaca L.; SSR markers apricot; genetic diversity; germplasm; microsatellites; population structure; Prunus armeniaca L.; SSR markers
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MDPI and ACS Style

Herrera, S.; Hormaza, J.I.; Lora, J.; Ylla, G.; Rodrigo, J. Molecular Characterization of Genetic Diversity in Apricot Cultivars: Current Situation and Future Perspectives. Agronomy 2021, 11, 1714. https://doi.org/10.3390/agronomy11091714

AMA Style

Herrera S, Hormaza JI, Lora J, Ylla G, Rodrigo J. Molecular Characterization of Genetic Diversity in Apricot Cultivars: Current Situation and Future Perspectives. Agronomy. 2021; 11(9):1714. https://doi.org/10.3390/agronomy11091714

Chicago/Turabian Style

Herrera, Sara, José I. Hormaza, Jorge Lora, Guillem Ylla, and Javier Rodrigo. 2021. "Molecular Characterization of Genetic Diversity in Apricot Cultivars: Current Situation and Future Perspectives" Agronomy 11, no. 9: 1714. https://doi.org/10.3390/agronomy11091714

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