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Genetic Control of Forking in Diallel Tests of Loblolly Pine

Forking defects are probably the most serious stem-quality problems in loblolly pine. Our assessment of forking includes forked stems and ramicorn or steep-angled branches, which greatly reduces wood yield and wood quality. Assessing forking in elite pedigrees will enable us to more successfully breed and deploy non-forked phenotypes. The genetic control of forking and the correlation of forking to growth, stem straightness and fusiform rust disease traits were investigated in 6-year-old diallel tests, located throughout the Southeast.


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Author(s): Jin Xiong, Fikret Isik, Ross W. Whetten, Steven E. McKeand

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 2007