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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 17th Southern Forest Tree Improvement Conference (1983) → Geographic Patterns Of Variation Among Sweetgum Populationsin The Southern United States--fourteenth-year Results

Geographic Patterns Of Variation Among Sweetgum Populationsin The Southern United States--fourteenth-year Results

Open-pollinated seeds were collected from 5 trees in 2 stands located in 14 geographic sources across the southern United States. A subsample of trees from 6 of the 14 geographic sources plus a common set of check lots, one from each of the 14 sources, were planted at 7 locations. The patterns of geographic variation among sources, stands, and trees for height and DBH were analyzed using analysis of variance. Differences among families/ stands/geographic source were highly significant (.01 level) at 5 of 7 plantings for height and DBH. Variation among stands/geographic source was not significant at any planting. Variation among geographic sources was significant at only 2 plantings. Coastal Plain sources tended to grow better than Piedmont sources at Coastal Plain or bottomland sites. Piedmont sources were generally better on Piedmont sites. Additional keywords: Liquidambar styraciflua L., provenance varition.


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Author(s): George W. Stubblefield

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1983