CAVITY FORMATION IN WINTER BUDS OF PINUS BANKSIANA |
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| Authors: | Robert A. Cecich |
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| Affiliation: | USDA, Forest Service, North Central Forest Experiment Station, Forestry Sciences Laboratory, P.O. Box 898, Rhinelander, Wisconsin, 54501 |
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| Abstract: | The formation of a cavity between the rib meristem and the pith in winter buds of Pinus banksiana is described. Necrosis of cells at the juncture of the rib meristem and pith begins in November, and by mid-March the necrotic region enlarges, forming a cavity that separates the rib meristem from the pith. The cavity appears to be formed by autolysis, rather than a pulling apart of the cells. The function of the cavity remains speculative. |
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