Impact of Geographic Range on Genetic and Chemical Diversity of Indian Valerian (Valeriana jatamansi) from Northwestern Himalaya

An effort was made to determine the impact of geographic range on genetic richness and chemical constituents of Valeriana jatamansi Jones, an herb indigenous to the northwestern Himalaya. The genetic structure of 16 accessions from two major divisions of Uttarakhand state (Kumaon and Garhwal) was an...

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Bibliographic Details
Published in:Biochemical genetics 2012-10, Vol.50 (9-10), p.797-808
Main Authors: Sundaresan, V, Sahni, G, Verma, R. S, Padalia, R. C, Mehrotra, S, Thul, Sanjog T
Format: Article
Language:English
Subjects:
alpine plants
Altitude
Biochemistry
Biomedical and Life Sciences
Biomedicine
chemical composition
chemotypes
Chromatography, Gas
DNA, Plant - genetics
Genetic diversity
Genetic structure
Genetic Variation
Geography
Herbs
Human Genetics
Inbreeding
India
Medical Microbiology
Microsatellite Repeats
Oils, Volatile - chemistry
Phylogeny
Plant Oils - chemistry
Principal Component Analysis
Principal components analysis
valerian
Valerian - chemistry
Valerian - classification
Valerian - genetics
Valeriana
Valeriana jatamansi
Zoology
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Summary:An effort was made to determine the impact of geographic range on genetic richness and chemical constituents of Valeriana jatamansi Jones, an herb indigenous to the northwestern Himalaya. The genetic structure of 16 accessions from two major divisions of Uttarakhand state (Kumaon and Garhwal) was analyzed by ISSR markers. Overall genetic diversity among the populations was 45 %, with a cumulative range of 35–92 % similarity for most of the high-altitude plants and a comparatively narrow range, 50–88 %, for the population below the altitude of 1,800 m. Likewise, a remarkable predictability was evident from the chemical constituents on an individual basis. In principal component analysis, most of the accessions fall into two major groups and are classified as chemotypes based on the percentage of similar chemical constituents; these are mostly correlated to altitude. Geographic distance seems to influence the genetic and chemical variability, indicating the genetic inbreeding within the population.
ISSN:0006-2928
1573-4927
DOI:10.1007/s10528-012-9521-5