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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 21st Southern Forest Tree Improvement Conference (1991) → Five Year Evaluation of Loblolly Progeny Tests Established with Both Bare-Root and Containerized Seedlings

Five Year Evaluation of Loblolly Progeny Tests Established with Both Bare-Root and Containerized Seedlings

Two loblolly pine (Pinus taeda L.) progeny tests, planted with both containerized and bare-root seedlings, were evaluated after five years in the field. Containerized seedlings were consistently smaller. Survival differences by seedling type were not apparent in either test. Family rankings across the two seedling types were generally more closely correlated for height and diameter than for volume. In one test family rankings were highly correlated for the two seedling types. In the other test, family rankings were more consistent in drought-hardy sources than in sources selected for growth rate and form. The lack of significant family rank correlations for the two seedling types in the second test raises questions regarding family selection from containerized tests. One family, in particular, showed dramatic rank changes between bare-root and containerized material. Keywords: Pinus taeda L., containerized seedlings, progeny testing, family selection.


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Author(s): Craig R. McKinley

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1991

Section: General Session: Genetic Testing and Selection