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Black Walnut Progeny and Clonal Tests at Purdue University

The genetic improvement of Indiana black walnut at Purdue University has progressed along two important fronts: (1) progeny testing of superior tree selections, and (2) clonal development and testing of these selections. Prior to clone bank flowering, half-sib testing of superior individuals comprised the bulk of our work. Nursery, one, two, and three-year-old outplanting results have shown surprisingly high inheritance, and genotypic and phenotypic correlations on growth parameters. In addition, family performance compared with the commercial check has been outstanding.

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Author(s): Walter F. Beineke, Charles J. Masters

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1973