Author： Rink George
Publisher： Society of American Foresters
ISSN： 0015-749X
Source： Forest Science, Vol.30, Iss.3, 1984-09, pp. : 821-827
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Abstract
Narrow-sense heritability for black walnut height at age 10 was 0.55, and gain projections based upon selecting the tallest tree in the fastest growing 50 percent of families indicate a possible improvement of 25 percent over mean unselected height. Despite analysis of trends in variance components, heritabilities, correlations, and cumulative height over the 10-year period which indicate that the progeny test is still in a juvenile growth phase, early selection for subsequent height growth appears to be effective in this species. Forest Sci. 30:821-827.
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