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- Title
Diversidad genética de materiales nativos de aguacate guatemalteco a través del marcador molecular AFLP.
- Authors
Ruiz-Chután, José A.; Berdúo-Sandoval, Julio E.; Kalousová, Marie; Lojka, Bohdan; Fernández, Eloy; Žiarovská, Jana; Sánchez-Pérez, Amílcar
- Abstract
Avocado is one of the most widely consumed crops worldwide and according to new theories, the Sierra Nevada region in California is suggested as the center of origin and Guatemala as one of the main domestication centers. Through morphological characterizations, a high genetic diversity has been reported in the country, but due to the behavior of cross pollination and interracial hybridizations, it has not been possible to detail the current genetic status of the species. Molecular markers are useful for this type of study by focusing on differences at DNA level. This study analyzed the genetic diversity of the native Guatemalan avocado from seven geographic populations with AFLP molecular marker. Population structure data showed a high degree of diversity at the individual level (Ht = 0.1933, Hw = 0.1872) and low differentiation between populations (Hb = 0.0061). The results suggest a high rate of migration that directly influences the degree of genetic mixing of the analyzed materials. The low index of population structure points to a high genetic flow between populations, so that the species does not present a greater risk due to genetic drift, minimizing the risk of loss of alleles due to fixation. The protection of the total genetic resource is suggested, and not only of promising materials, thus avoiding the risk of genetic erosion of the species and guaranteeing the permanence of genetic diversity, which will be the basis of future breeding programs.
- Subjects
GUATEMALA; SIERRA Nevada (Calif. &; Nev.); GENETIC drift; GERMPLASM; POPULATION differentiation; DATA structures; SPECIES hybridization; AVOCADO
- Publication
Ciencia, Tecnología y Salud, 2020, Vol 7, Issue 2, p155
- ISSN
2409-3459
- Publication type
Article