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Genetic control of pruning wound development in black walnut progenies

After pruning, very few wounds had shown any dimensional changes but both dieback and healing were common to most black walnut progenies. The among-family variation in wound response was 1.4 to 4.1 times as great as the within-family variation. Heritability values were higher for the largest wound than smaller wounds, higher for horizontal dieback than for vertical dieback, and are higher for dieback than for healing. Wound healing was correlated to tree vigor but was not correlated with the latitude of the seed source. Additional keywords: Dieback, vigor, heritability.


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Author(s): Robert W. Neumann, Fan H. Kung

Publication: Tree Improvement and Genetics - North Central Tree Improvement Conference - 1983