Family by environment interactions for loblolly and slash pine plantations in the southeastern United States

Abstract

Few studies have quantified the combined effects of silvicultural treatments and genetic improvement on unit area production of full-sib family blocks of loblolly and slash pine. We examined genotype (family) by environmental interactions (G x E) through age five years using a factorial experiment consisting of silvicultural treatment intensity, planting density and full-sib families Five years after planting, both loblolly and slash pine demonstrated significant interactions among several factors: G by site (p < 0.028 and p < 0.016 respectively) and g by silvicultural treatment intensity (p < 0.055 and p < 0.059 for basal area and standing stem volume). g by silvicultural treatment interactions were positive, large and of the scale-type effe. . changes in slash pine family rankings between sites were partly explained by a combination of fusiform rust infection [Cronartium quercum (Berk.) Miyabe ex Shirai f. sp. fusiforme] and wind damage from the 2004 hurricane season.

Parent Publication

• Proceedings of the 14th biennial southern silvicultural research conference

Citation

Roth, Brian E.; Jokela, Eric J.; Martin, Timothy A.; Huber, Dudley A.; White, Timothy L. 2010. Family by environment interactions for loblolly and slash pine plantations in the Southeastern United States. In: Stanturf, John A., ed. 2010. Proceedings of the 14th biennial southern silvicultural research conference. Gen. Tech. Rep. SRS–121. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 35-41.