Thomas D. Byram

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Currently, both industrial and private landowners in the Western Gulf Forest Tree Improvement Program (WGFTIP) area are compensated for their timber primarily based on the weight or volume of green wood reaching the mill gate. This places an immediate economic focus on adaptability and volume growth. However, selection for volume growth alone could result(More)
A meta-analysis of 520 parents and 51,439 individuals was used to develop two equations for predicting age-age genetic correlations in Pinus taeda L. Genetic and phenotypic family mean correlations and heritabilities were estimated for ages ranging from 2 to 25 years on 31 sites in the southern U.S. and Zimbabwe. Equations for predicting age-age(More)
Southern pine cooperative breeding programs currently emphasize genetic improvement of growth rates. When a deployment population, typically a seed orchard, is established, there is an opportunity to emphasize traits other than growth rate to maximize the profit of individual cooperators in the breeding program. We studied a Southeast Texas breeding(More)
First-generation selection (FGS) and second-generation selection (SGS) breeding populations of loblolly pine from east Texas were studied to estimate the genetic diversity, population structure, linkage disequilibrium (LD), signatures of selection and association of breeding traits with a genome-wide panel of 4,264 single nucleotide polymorphisms (SNPs).(More)
Loblolly pine (Pinus taeda L.) is one of the most widely planted and commercially important forest tree species in the USA and worldwide, and is an object of intense genomic research. However, whole genome resequencing in loblolly pine is hampered by its large size and complexity and a lack of a good reference. As a valid and more feasible alternative,(More)
4 5 The Western Gulf Region of the United States has experienced two consecutive years of drought. While the 1999 weather was not as severe as the drought of 1998, these dry years have had a cumulative effect on the tree improvement programs in the region. The drought has contributed to a short-term increase in demand for operational seedlings. Most of the(More)
Abstract: The economic success of controlled mass pollination (CMP) depends both upon the value 0 4 the genetic gain obtained and the cost per seed. Crossing the best six loblolly pine (pinus taeda) parents currently available in each deployment region of the Western Gulf Forest Tree Improvement’ Programed will produce seed with an average additional gain(More)
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 halfsib families from throughout the natural range of(More)
7 The year 2001 was one of change for the cooperative in many important ways. Industry consolidation and the shifts in land ownership patterns continued to accelerate. International Paper Company's acquisition of Champion International , which was actually completed in 2000, resulted in a loss of a cooperative member in 2001. Fortunately, this occurred(More)
Acoustics have been used to determine wood quality attributes in both standing timber and sawn lumber. Sonic transmission data are collected nondestructively and can act as a surrogate for stiffness, they are directly related to modulus of elasticity (MOE) and closely related to differences in microfibril angle (MFA). Together with wood density, MFA and MOE(More)