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Title: Heights of selected ponderosa pine seedlings during 20 years
Author: Callaham, R. Z.; Duffield, J. W.;
Source: In: Forest Genetics Workshop Proc. 1962 10-13 (So. Forest Tree Improve. Com. Pub 22 Macon GA): p. 1-4
Publication Series: Miscellaneous Publication
Description: Many silviculturists and geneticists, concerned with the problem of increasing the rate of production of forest plantations, advocate or practice the selection of the larger seedlings in the nursery bed. Such selection implies a hypothesis that size of seedlings is positively correlated with size of the same plants at some more advanced age. Two tests were established at the Institute of Forest Genetics to determine whether seedlings selected as tallest within one-parent progenies maintain a growth superiority.
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Callaham, R. Z. ; Duffield, J. W. 1963. Heights of selected ponderosa pine seedlings during 20 years. In: Forest Genetics Workshop Proc. 1962 10-13 (So. Forest Tree Improve. Com. Pub 22 Macon GA): p. 1-4
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