Genetic analysis of Canarium album in different areas of China by improved RAPD and ISSR

To lay the foundation of the classification of Canarium album (C. album), and C. album from Terminalia Chebula (T. chebula) in different areas of China, improved RAPD and ISSR analysis were performed to analyze polymorphism and genetic relationship. Ten samples were collected from different locations in China. A total of 221 fragments were detected by improved RAPD, out of which polymorphic fragments accounted for 82.3% with average amplification bands of 10.05 per primer. ISSR markers revealed a total of 147 alleles, where polymorphic fragments accounted for 83.5%, with average amplification bands of 7.35 per primer. The sizes of fragments ranged from 200 to 2500bp and from 150 to 2000bp in RAPD and ISSR markers, respectively. The similarity coefficient ranged from 0.46 to 0.86 with RAPD markers and 0.36 to 0.89 with ISSR markers. The results indicated that improved RAPD and ISSR methods are useful for genetic diversity study of C. album. Thus, this study provides us the theoretical basis for the breeding and classification of C. album in South and Southwest China.