Molecular Markers and a Quality Trait Evaluation for Assessing the Genetic Diversity of Avocado Landraces from China
文献类型： 外文期刊
作者： Liu, Yuanzheng 1 ; Ge, Yu 1 ; Zhan, Rulin 1 ; Lin, Xinge 1 ; Zang, Xiaoping 1 ; Li, Yanxia 1 ; Yang, Ying 1 ; Ma, Weihong 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Haikou Expt Stn, Haikou 570102, Hainan, Peoples R China
关键词： Persea americana; phenotypic trait; EST-SSR marker; genetic relationship
期刊名称：AGRICULTURE-BASEL （ 影响因子：2.925； 五年影响因子：3.044 ）
ISSN：
年卷期： 2020 年 10 卷 4 期
页码：
收录情况： SCI
摘要： 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 x Mexican x 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.
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