Genetic Diversity of Pinus Roxburghii Sarg. Collected from Different Himalayan Regions of India Assessed by Random Amplified Polymorphic DNA Analysis

Authors

Keywords:

Genetic diversity, Himalayan region, Pinus roxburghii, random amplified polymorphic DNA

Abstract

Present study was aimed at molecular genetic fingerprint profile of 15 genotypes of three populations of Pinus roxburghii Sarg. from Himalayan regions of India using random amplified polymorphic DNA (RAPD) based markers. Needles of Pinus roxburghii Sarg. were collected from Dharamshala, Himachal Pradesh (HP), Nainital, Uttarakhand (UK) and Darjeeling, West Bengal (WB) regions of India. The samples were subjected to DNA extraction and RAPD analysis using oligonucleotide purification cartridge (OPC) primers. Out of 15 primers tested, nine primers gave scorable bands. Altogether 48 bands were obtained, out of which 43 were found to be polymorphic. Number of amplified fragments with RAPD primers ranged from four to eight with the size of amplicon ranging from 500 to 7,000bp. Investigation of natural diversity at intraspecies level was performed with 15 genotypes. Forty"‘eight amplification products were scored by RAPD and showed 89.58% polymorphism with a mean intrapopulation genetic diversity (Hpop) of 0.2754. A significant inter"‘ and intrapopulation diversity was observed, with the percentage of polymorphic loci (Pp) ranging from 50.09 to 70.83%, Shannon's information index (I) from 0.3262 to 0.4689 and Nei's gene diversity (h) from 0.2032 to 0.3335 with mean Nei's gene diversity 0.377 and the overall estimate of gene flow being (Nm) 1.3555. Unweighted pair"‘group method with arithmetic average (UPGMA) analysis based Dendrogram showed single cluster. The variation amongst the samples of the three ecological regions can be attributed to varied climatic conditions and may help in conservation/future cultivation of these species.

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Published

2018-08-10

How to Cite

Sinha, D., Singh, J., Tandon, P. K., & Kakkar, P. (2018). Genetic Diversity of Pinus Roxburghii Sarg. Collected from Different Himalayan Regions of India Assessed by Random Amplified Polymorphic DNA Analysis. Toxicology International, 20(3), 208–213. Retrieved from https://www.informaticsjournals.com/index.php/toxi/article/view/21732

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Original Research