Southern Research Station

Title: Performance of nuttall oak (Quercus Texana Buckl.) provenances in the Western Gulf Region

Author: Gwaze, D.P.; Byram, T.D.; Raley, E.M.

Date: 2003

Source: In: Proceedings of the 27th Southern Forest Tree Improvement Conference, June 24-27, Stillwater, Oklahoma, ed. Mckinley, Craig R., p. 126-137

Description: Three series of three tests each of Nuttall oak (Quercus texana Buckl. formally Q. nuttallii Palmer) were established by the Western Gulf Forest Tree Improvement Program at three locations: Desha and Lonoke Counties in Arkansas and Sharkey County in Mississippi. The three series included 28-42 different half-sib families from throughout the natural range of Kuttall oak. Families were arbitrarily divided into provenances based on the river basin in which they originated. Significant provenance differences were found for survival in all series. Provenance differences for growth were highly significant for series 2 and 3, but not for series 1. The Red River provenance had the best growth performance in series 3 tests, but it was not represented in the other two test series. The best provenance in series 2, the Ouachita River provenance, ranked second in series 3 tests. The Western provenance performed well in series 1 and 3 tests but had poorer performance in series 2 tests. The interactions between site and provenance were significant for all growth traits in all series. Family-mean heritability estimates, however, were high ranging from 0.72-0.96 for height and 0.22-0.95 for diameter. There were good families from all sources indicating that family selection will be effective in this species.

Keywords: Provenance variation, heritability, genotype x environment interactions, Nuttall oak, Quercus texana Buckl.

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Citation

Gwaze, D.P.; Byram, T.D.; Raley, E.M.  2003.  Performance of nuttall oak (Quercus Texana Buckl.) provenances in the Western Gulf Region .   In: Proceedings of the 27th Southern Forest Tree Improvement Conference, June 24-27, Stillwater, Oklahoma, ed. Mckinley, Craig R., p. 126-137