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Home → Publications → Tree Improvement and Genetics → North Central Tree Improvement Conference → 3rd North Central Tree Improvement Conference (1983) → Exploration of environmental factors related to seed source x plantation interactions in black walnut

Exploration of environmental factors related to seed source x plantation interactions in black walnut

Genotype x environment interactions were found for fifteen year height and dbh of black walnut seed sources grown in seven midwestern U.S. plantations. Correlations between environmental parameter estimates and plantation effects or genotype x environment interaction effects were used to identify environmental factors of importance in the selection of planting sites. Soil pH and amount of available phosphorus were strongly correlated with plantation performance in height and dbh. Average July temperature, length of growing season, and soil pH showed significant relationships with interaction effects of seed sources for height. Latitude, average January temperature, average July temperature, length of growing season, amount of available nitrogen, and silt content of soils showed significant relationships with interaction effects for dbh. These environmental factors merit extra consideration in selection of plantation sites within this region.


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Author(s): Geordie D. Smith

Publication: Tree Improvement and Genetics - North Central Tree Improvement Conference - 1983