Genetic Diversity of Cassava Germplasm Revealed by SSR Markers
Using simple sequence repeat (SSR) markers 195 domestic(foreign)varieties(lines) on the National Cassava Germplasm Resources Garden were analyzed for genetic diversity.The results showed that 44 pairs of primers amplified 186 alleles with 2-8 alleles amplified by each pair of primers.The average Shannon's information index was 1.01,and the average PIC is 0.49.The (GS) distributions on the genetic similarity coefficient of 195 varieties (lines) were 0.57~0.99.Cluster analysis results showed that 195 germplasms can be divided into 7 groups while the genetic distance was 0.71.