Molecular diversity in a germplasm collection of avocado accessions from the tropical and subtropical regions of China
- Resource Type
- Authors
- Rulin Zhan; Tao Wang; Jianqiu Cao; Funing Ma; Fuchu Hu; Lin Tan; Zhining Xu; Yu Ge; Bin Wu; Teng Zhang
- Source
- Crop Breeding and Applied Biotechnology v.19 n.2 2019
Crop Breeding and Applied Biotechnology
Sociedade Brasileira de Melhoramento de Plantas
instacron:CBAB
Crop Breeding and Applied Biotechnology, Volume: 19, Issue: 2, Pages: 153-160, Published: 01 AUG 2019
- Subject
- Germplasm
Genetic diversity
Tropics
food and beverages
Subtropics
genetic diversity
Biology
microsatellite markers
Agronomy
Persea americana
botanical races
General Earth and Planetary Sciences
China
Agronomy and Crop Science
Biotechnology
General Environmental Science
Hybrid
- Language
- English
Avocado is an economically important crop and widely cultivated in the tropical and subtropical regions of China, whereas little is known about its genetic diversification. Twenty-six EST-SSR markers were developed based on avocado EST sequences. Molecular characterization was applied to assess the genetic relationships among different accessions. In total, nine gSSRs and nine EST-SSRs were selected to illuminate the genetic relationships within the 92 samples. Diversity parameters associated to the selected markers indicated the relatively low genetic diversity and a certain degree of inbreeding in the 92 avocado accessions. Clustering method and principal coordinate analysis clearly distinguished the accessions in accordance to the botanical races and geographic regions by molecular characterization. Moreover, the botanical race or hybrids of some unknown race accessions from different geographic origins could be determined based on known genotypes in the same cluster..