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Geographic Patterns Of Variation Ingrowth Of Sweetgum In East Texas

Two groups of open-pollinated sweetgum progeny tests from 202 selections were planted in east Texas. Study A consisted of three tests and was established in northeast Texas and southeast Texas. This study contained seedlings from 100 families representing 12 counties in east Texas. Significant provenance differences were observed for height and diameter but not for survival and volume. The planting location by family within provenance interaction was significant for survival, diameter and volume. Two other tests (Study B) were established in east-central Texas and southeast Texas and contained seedlings from 102 families representing east Texas, south Arkansas and west Louisiana. The provenance effect was significant for survival and volume, and the family within provenance term was highly significant for all traits. There were no important genotype by environment interactions. The data indicate that sweetgum seed should be collected from Polk, Tyler, Newton and Jasper Counties for use in east Texas. Additional keywords: Liquidambar styraciflua, progeny tests, heritability.


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Author(s): Albert F. Stauder, III, W. J. Lowell

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1985