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U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Genetic Variation In Loblolly Pineroot Growth Potential

Half-sib families of 1-0 loblolly pine seedlings were evaluated for genetic variation in their ability to regenerate new roots (root growth potential (RGP)) when outplanted. Half-sib family variation was significant with heritabilities ranging 0.34-0.37 for two independent samples of seedlots lifted in March 1983 and 1984. Variation patterns of root growth potential were different for half-sib families lifted at different times during the nursery growing season, and RGP of March lifted half-sib families was related to both first- and second-year field performance. Additional keywords: RGP, field performance, height growth, nursery management, lifting season, Pinus taeda.


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Author(s): Laura E. DeWald, Peter P. Feret, Richard E. Kreh

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