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Molecular Markers and a Quality Trait Evaluation for Assessing the Genetic Diversity of Avocado Landraces from China

Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 570102, China
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These authors contributed equally to this work.
Agriculture 2020, 10(4), 102; https://doi.org/10.3390/agriculture10040102
Received: 27 February 2020 / Revised: 20 March 2020 / Accepted: 21 March 2020 / Published: 2 April 2020
(This article belongs to the Section Genotype Evaluation and Breeding)
Avocado is an economically important crop that is widely cultivated in the tropical and subtropical regions of China. However, there is a lack of sufficient information regarding the racial origins and genetic diversification of native avocado germplasm. On the basis of a race-specific kompetitive allele-specific PCR genotyping analysis, the 56 avocado accessions examined in this study were classified as complex hybrids, namely Guatemalan × Mexican × West Indian hybrids. The genetic relationships among the avocado accessions were assessed based on a quality trait evaluation and molecular characterization. The total flavonoid content was relatively useful for differentiating between native avocado accessions. A cluster analysis as well as principal component and coordinate analyses of quality traits and molecular characteristics differentiated the avocado accessions, but not according to geographical origins. Thus, the artificial flow of avocado germplasm or seed exchanges among farmers within specific regions may have contributed to the similar genetic backgrounds of avocado germplasm from different collections. View Full-Text
Keywords: Persea americana; phenotypic trait; EST-SSR marker; genetic relationship Persea americana; phenotypic trait; EST-SSR marker; genetic relationship
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Liu, Y.; Ge, Y.; Zhan, R.; Lin, X.; Zang, X.; Li, Y.; Yang, Y.; Ma, W. Molecular Markers and a Quality Trait Evaluation for Assessing the Genetic Diversity of Avocado Landraces from China. Agriculture 2020, 10, 102.

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