1. Genetic diversity and population structure of rice accessions from South Asia using SSR markers.
- Author
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Hao Cui, Kyaw Thu Moe, Jong-Wook Chung, Young-II Cho, Gi-An Lee, and Yong-Jin Park
- Subjects
- *
RICE , *PLANT diversity , *GENETIC polymorphisms , *PLANT breeding , *HETEROZYGOSITY - Abstract
The population strructure of a domesticated speciyes is influenced by the natural history of the populations of its pre-domesticated ancestors,m as well as by the breeding system and complexity of breeding practices implemented by hmans. In the genetic and population structure analysis of 122 Sout Asia collections using 29 simple sequence repeat (SRR) markers, 362 alleles were detected, with an average of 12.5 per locus. The average expected heteroygosity and polymorphism information content (PIC) for each SRR locus were 0.74 and 0.72, respectively. The mkodel-based structure analysis revealed the presence of three clusters with 91.8% (shared>75%) memebership, with 8.2% showing admixture. The genetic distances of Clusters 1-3 were 0.55, 0.56, and 0.68, respectively. Polymorphicinformation content followed the same trend (Cluster 3 had the highest value be used for supporting rice bbreeding programs in South Asian countries. [ABSTRACT FROM AUTHOR]
- Published
- 2010