The genetic variation in natural and planted teak forests

The genetic variation in teak is large; exploration and testing of this variation have provided for significant gains in tree improvement. The observed quantitative differences between provenances of different origin reported from provenance field trials at several sites over the last 60 years are in line with more recent findings of genetic variation within and among teak regions at the molecular level. Provenance variation in economically and ecologically important traits is huge and far from fully explored. Natural teak forests have, however, declined and deteriorated. It is therefore important to develop gene conservation programmes that cover all parts of the gene pool as well as to further explore, mobilise and characterize the genetic variation in planted and natural populations for breeding and use in planting efforts. Selection and testing of applied planting material continues to be highly relevant as an integral part of any major planting programmes. A “genetic business plan” is important whether in co-operative organisations, private investment schemes, or in support of small-holder growers. To be successful, the sharing of impartial knowledge and access to reproductive material is crucial.

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