Indiana's Genetic Tree Improvement Program

The Indiana Division of Forestry has an active tree improvement program. Initial efforts at genetic improvement were made in the 1970's, but the last three years have seen the greatest expansion of activities. The program is thoroughly established, is ongoing, and is showing results. It is a practical application of the knowledge gained through forest genetics research. Black walnut and tulip tree are the principal species being improved. Virginia pine, American chestnut, cottonwood, and white oak are being worked with to a lesser extent. Total seed orchard area is approaching 100 acres. Selection and progeny testing are continuing activities. Seed orchards are predominately clonal. Many methods of vegetative propagation are used. The program strives to place genetic improvement into the seedlings distributed for reforestation by our nurseries. Additional keywords : Grafting, progeny testing, selection, J . nigra , L . tulipifera , P. virginiana, C . dentata .

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Author(s): Stephen G. Pennington

Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1976