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RESIN CRYSTALLIZATION RELATED TO WEEVIL RESISTANCE IN WHITE PINE (PINUS STROBUS)

Published online by Cambridge University Press:  31 May 2012

J. P. van Buijtenen  and
Frank S. Santamour Jr.
J. P. van Buijtenen
Affiliation:
Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture, Durham, New Hampshire
Frank S. Santamour Jr.
Affiliation:
National Arboretum, Agricultural Research Station, U.S. Department of Agriculture, Washington, D.C.
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Abstract

Differences in weevil attack between trees containing crystallizing and non-crystallizing resin were observed. Among twenty non-crystallizers only three trees were successfully attacked by the white-pine weevil. About 50% of the remaining population was successfully attacked. Resin crystallization can thus be used as a characteristic to screen for resistance to the white-pine weevil.Since several other characteristics such as leader diameter, depth of cortical resin ducts and bark thickness are also related to weevil resistance, a discriminant function could be developed to maximize discrimination between susceptible and resistant trees by a properly weighted combination of characteristics related to weevil resistance.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 2 , February 1972 , pp. 215 - 219
Copyright
Copyright © Entomological Society of Canada 1972

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References

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