Changes in genetic diversity parameters in unimproved and improved populations of teak (Tectona grandis L.f.) in Karnataka state, India

Lyngdoh, N and Joshi, Geeta and Ravikanth, G and Vasudeva, R and Uma Shaanker, R (2013) Changes in genetic diversity parameters in unimproved and improved populations of teak (Tectona grandis L.f.) in Karnataka state, India. Journal of Genetics, 92 (1). pp. 141-145. ISSN 0022-1333

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Abstract

Teak (Tectona grandis L. f.; family Verbanaceae) is an important plantation tree species in the tropics and in India one of the first species to be prioritized for improvement. Improvement efforts for the last 50 years have essentially concentrated on augmenting quality seed production by establishing seed production areas (SPA) and clonal seed orchards (CSO). Presently, these two form the main sources of quality planting material for teak throughout the country. However, there is no information on the genetic quality of such sources nor information on the progeny used in plantation programmes. Reports of studies based on coniferous and tropical species provide conflicting results on the impact of domestication on the genetic diversity of populations (Chaisurisri and El Kassaby 1994; Rajora 1999; Moran et al. 2000; Godt et al. 2001; Icgen et al. 2006). Also the impact of domestication on the genetic diversity of progeny populations is poorly understood (Stoehr and El-Kassaby 1997; Schmitdtling and Hiplins 1998). Such studies become pertinent not only for gauging the impact of selection on reforestation stock, but also for effective genetic conservation of existing breeding populations. We therefore address two issues in the present study: (i) the change in genetic diversity with increasing levels of improvement, and (ii) the impact of the above change on genetic diversity of progeny populations.

Item Type: Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences
Uncontrolled Keywords: ISSR; progeny diversity; parent diversity; tree improvement.
Subjects: C Publications by ATREEians > G Journal Papers
Divisions: Publications by ATREEians > Journal Papers
Depositing User: Users 103 not found.
Date Deposited: 15 Dec 2016 06:09
Last Modified: 15 Dec 2016 06:09
URI: http://eprints.atree.org/id/eprint/415

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