DIVERSIDAD GENÉTICA DE AGUACATE CRIOLLO DE LA PENÍNSULA DE YUCATÁN ESTIMADA POR MARCADORES MOLECULARES
DIVERSIDAD GENÉTICA DE AGUACATE CRIOLLO DE LA PENÍNSULA DE YUCATÁN ESTIMADA POR MARCADORES MOLECULARES
-
DOI: https://doi.org/10.22533/at.ed.97341024120810
-
Palavras-chave: diversidad genética, heterocigosidad, marcadores ISSR, Persea americana, polimorfismo
-
Keywords: genetic diversity, heterocigosity, ISSR markers, Persea americana, polimorphysm
-
Abstract: The avocado (Persea americana) is very important in Mexico, since it is the main producer and exporter of the fruit, having plantations in almost all states. The market is dominated only by the Hass variety and the study of its genetic resources has been neglected, which include local, creole and wild varieties that represent a wide potential for their use and conservation. The objective was to determine the genetic diversity of creole avocado from the Yucatán Peninsula through Simple Repeated DNA Intersequences. Individuals from the states of Campeche, Quintana Roo and Yucatán were studied assuming the three populations are geographically isolated. The greatest genetic diversity was found in Yucatán with a Heterozygosity (Hj) of 0.32, followed by Campeche and Quintana Roo with values of 0.30 and 0.26, respectively. The Percentage of Polymorphic Alleles had a similar distribution with values of 93.3, 90.9 and 88.2%, in the same order. The Percentage of Segregating Fragments is greater than 98% in the three states. The ISSR marker that estimated the highest Heterozygosity was (CT)7RC with 0.369 and the one with the lowest estimate was (GACA)4 with 0.227. Although a small area of avocado is grown in Yucatán, yields are the highest in the country, therefore, the role of its wide genetic diversity in fruit production and its correlation with climatic and geographical factors must be studied in greater depth.
- VICTOR MONTERO TAVERA
- ANA PAULINA RODRÍGUEZ-VERA
- GONZALO HERNÁNDEZ-GARCÍA
- RAUL DÍAZ-PLAZA
- ROBERTO CANALES-CRUZ
- RAYMUNDO JAVIER NAVA-PADILLA