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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 23rd Southern Forest Tree Improvement Conference (1995) → Effects Of Rootstock Genotype And Scion Chronological Age Ongrowth And Flowering Of Slash Pine Graft's.

Effects Of Rootstock Genotype And Scion Chronological Age Ongrowth And Flowering Of Slash Pine Graft's.

In 1988 and 1989, the University of Florida Cooperative Forest Genetics Research Program (CFGRP) established clone banks throughout the Southeastern U. S. for breeding and scion multiplication for seed orchards. This provided an opportunity to study rootstock-scion interactions, screen for potential seed orchard rootstock families and study the effects of scion maturation on growth and reproduction of grafted slash pine clones across many sites and ages. This study included nine clone banks, seventy-six open-pollinated slash pine rootstock families, approximately 460 scion clones of different chronological ages and over 3600 ramets. Comparisons among rootstocks were made for height and diameter growth, disease resistance, female strobili production, male strobili production and survival. The scion clones had chronological ages (age from time of seed germination) of 5 to over 40 years. Comparisons of height growth, diameter growth and female and male strobili production were made between older and younger scion clones.


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Author(s): S. R. Parker, Timothy L. White, Gary R. Hodge, G. L. Powell

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1995