SSR analysis of chromosome number 8 on genetic diversity of the populations of aromatic rice (Oryza sativa L.).

The genetic diversity of six populations was evaluated by using 5 SSR markers linked to fgr,which included the aromatic rice,non-aromatic Indica and Japonica populations from Guangxi,and UPRB,UPRH and B populations from South Asia aromatic rice genotypes.The results showed that the highest genetic diversity for chromosome number 8 was detected among the B population.The genetic relationships among the 6 populations were obtained by POPGENE analysis based Nei's genetic distance.The 6 populations were clustered into two groups.Group I comprised the aromatic rice,non-aromatic Indica and Japonica populations from Guangxi.Group II included UPRB,UPRH and B populations from South Asia aromatic rice genotypes.This suggested that the genetic difference lied between the aromatic rice genotypes from South Asia and that from Guangxi.The genetic relationships among the 6 populations indicated that the aromatic rice genotypes from South Asia had developed a special aromatic rice type.