title: AFLP-based genetic diversity assessment of commercially important tea germplasm in India.
abstract: India has a large repository of important tea accessions and, therefore, plays a major role in improving production and quality of tea across the world. Using seven AFLP primer combinations, we analyzed 123 commercially important tea accessions representing major populations in India. The overall genetic similarity recorded was 51%. No significant differences were recorded in average genetic similarity among tea populations cultivated in various geographic regions (northwest 0.60, northeast and south both 0.59). UPGMA cluster analysis grouped the tea accessions according to geographic locations, with a bias toward China or Assam/Cambod types. Cluster analysis results were congruent with principal component analysis. Further, analysis of molecular variance detected a high level of genetic variation (85%) within and limited genetic variation (15%) among the populations, suggesting their origin from a similar genetic pool.
authors.affiliation: Institute of Himalayan Bioresource Technology, CSIR, Palampur, Himachal Pradesh, India. mrk_sharma@yahoo.com
authors.forename: R K
authors.initials: RK
authors.lastname: Sharma
authors.forename: M S
authors.initials: MS
authors.lastname: Negi
authors.forename: S
authors.initials: S
authors.lastname: Sharma
authors.forename: P
authors.initials: P
authors.lastname: Bhardwaj
authors.forename: R
authors.initials: R
authors.lastname: Kumar
authors.forename: E
authors.initials: E
authors.lastname: Bhattachrya
authors.forename: S B
authors.initials: SB
authors.lastname: Tripathi
authors.forename: D
authors.initials: D
authors.lastname: Vijayan
authors.forename: A R
authors.initials: AR
authors.lastname: Baruah
authors.forename: S C
authors.initials: SC
authors.lastname: Das
authors.forename: B
authors.initials: B
authors.lastname: Bera
authors.forename: R
authors.initials: R
authors.lastname: Rajkumar
authors.forename: J
authors.initials: J
authors.lastname: Thomas
authors.forename: R K
authors.initials: RK
authors.lastname: Sud
authors.forename: N
authors.initials: N
authors.lastname: Muraleedharan
authors.forename: M
authors.initials: M
authors.lastname: Hazarika
authors.forename: M
authors.initials: M
authors.lastname: Lakshmikumaran
authors.forename: S N
authors.initials: SN
authors.lastname: Raina
authors.forename: P S
authors.initials: PS
authors.lastname: Ahuja
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis / Q000379:methods*; D017931:DNA Primers / Q000378:metabolism; D014644:Genetic Variation; D007194:India; D010802:Phylogeny; D025341:Principal Component Analysis; D012639:Seeds / Q000235:genetics*; D013662:Tea / Q000191:economics* / Q000235:genetics*
chemical_list: D017931:DNA Primers; D013662:Tea