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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 16th Southern Forest Tree Improvement Conference (1981) → Genetic Variation, Heritabilities, and Selection Strategies for Early Growth of Sycamore in the Gulf South

Genetic Variation, Heritabilities, and Selection Strategies for Early Growth of Sycamore in the Gulf South

Open pollinated progenies from 160 trees representing 16 geographic seed sources in the Gulf South were planted in each of two years at each of four sites in Mississippi. Three years after outplanting, progenies from sources near the Mississippi River in southwestern Mississippi and southeastern Louisiana had the greatest stem volume. There were source—by—site interactions, but sources from south of the planting site and near the Mississippi River were usually better than sources from north of the site. Source—by—planting—year interactions were still present for root collar diameter and height after three years in the field, but had disappeared for stem volume by that time. Early screening trials of seed source variation should be repeated over both sites and planting years to avoid errors caused by these interactions. Additional keywords: Genetic correlations, genetic gains, Platanus occidentalis.


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Author(s): Samuel B. Land, Jr.

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1981

Section: Section 2: Realized Results of Tree Breeding