title: Genetic structure of Indian valerian (Valeriana jatamansi) populations in western Himalaya revealed by AFLP.
abstract: Valeriana jatamansi Jones is a natural tetraploid species indigenous to the Indian Himalaya. To assess its genetic diversity and population structure, we analyzed six natural populations from the western Himalayan region using amplified fragment length polymorphism. An analysis of molecular variance found that 93% of the genetic variation of V. jatamansi was within populations and 7% among populations. The correlation between genetic and geographic distances (r = 0.14) was not significant. Though the populations are well separated, the lack of distinct genetic variation between populations may be due to either recent rapid fragmentation from a wide and continuous area resulting in genetically similar populations or wide dispersal of seed by wind, since the follicles are feathery. Polyploidy may be the reason for the lack of genetic impoverishment due to fragmentation.
authors.affiliation: Institute of Himalayan Bioresource Technology (CSIR), P.O. Box 6, Palampur, Himachal Pradesh 176 061, India. rajnbpgr@gmail.com
authors.forename: Subramani
authors.initials: S
authors.lastname: Rajkumar
authors.forename: Sunil Kumar
authors.initials: SK
authors.lastname: Singh
authors.forename: Akshay
authors.initials: A
authors.lastname: Nag
authors.forename: Paramvir S
authors.initials: PS
authors.lastname: Ahuja
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis; D000704:Analysis of Variance; D016000:Cluster Analysis; D014644:Genetic Variation; D007194:India; D010802:Phylogeny; D058974:Phylogeography; D018515:Plant Leaves; D025341:Principal Component Analysis; D057891:Tetraploidy; D014632:Valerian / Q000235:genetics*