Clones identification of Sequoia sempervirens （D. Don） Endl. in Chile by using PCR-RAPDs technique

• Published in: Journal of Zhejiang University. B. Science Vol. 10; no. 2; pp. 112 - 119
• Main Author: Manuel TORAL IBANEZ Margarita CARU Miguel A. HERRERA Luis GONZALEZ Luis M. MARTIN Jorge MIRANDA Rafael M. NAVARRO-CERRILLO
• Format: Journal Article
• Language: English
• Published: 2009
• Subjects: PCR检测; RAPD标记技术; 北美红杉; 基因型鉴定; 基因组DNA提取; 无性系; 随机扩增多态性DNA
• ISSN: 1673-1581; 1862-1783

A protocol of polymerase chain reaction-random amplified polymorphic DNAs （PCR-RAPDs） was established to analyse the gene diversity and genotype identification for clones of Sequoia sempervirens （D. Don） Endl. in Chile. Ten （out of 34） clones from introduction trial located in Voipir-Villarrica, Chile, were studied. The PCR-RAPDs technique and a modified hexadecyltrimethylammonium bromide （CTAB） protocol were used for genomic DNA extraction. The PCR tests were carried out employing 10-mer random primers. The amplification products were detected by electrophoresis in agarose gels. Forty nine polymorphic bands were obtained with the selected primers （BG04, BF07, BF 12, BF 13, and BF 14） and were ordered according to their molecular size. The genetic similarity between samples was calculated by the Jaccard index and a dendrogram was constructed using a cluster analysis of unweighted pair group method using arithmetic averages （UPGMA）. Of the primers tested, 5 （out of 60） RAPD primers were selected for their reproducibility and high polymorphism. A total of 49 polymorphic RAPD bands were detected out of 252 bands. The genetic similarity analysis demonstrates an extensive genetic variability between the tested clones and the dendrogram depicts the genetic relationships among the clones, suggesting a geographic relationship. The results indicate that the RAPD markers permitted the identification of the assayed clones, although they are derived from the same geographic origin.