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.
Download this file:
Download this file — PDF document, 392KbDetails
Author(s): Geordie D. Smith
Publication: Tree Improvement and Genetics - North Central Tree Improvement Conference - 1983