Home Publications Tree Improvement and Genetics Southern Forest Tree Improvement Conference 18th Southern Forest Tree Improvement Conference (1985) Genetic And Cultural Factors Affecting Growth Performanceof Slash Pine

Genetic And Cultural Factors Affecting Growth Performanceof Slash Pine

Five- to seven-year growth performances of genetically select slash pine progenies planted at five northern Florida sites were evaluated for differences due to family, provenance, plantation site, competition (pure and maximum), plot design (block and Nelder), spacing (472-43,100 trees/ha), and age. Significant family differences were found for growth. Family x site interactions were important on poor sites. Intergenotypic competition and plot design did not affect family performance. Spacing influenced diameter and volume, but a family x spacing interaction was not apparent. Growth trends detected at age five continued at age seven, but variation among families decreased. Additional Keywords: Pinus elliottii var. elliottii, genetic tests, genotype x environment interaction, spacing.


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Author(s): Gregory L. Reighard, Donald L. Rockwood, C. W. Comer

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

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