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Basidiocarp Development in Inonotus obliquus and its Inhibition by Stem Treatments

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Dead standing and felled yellow birch trees (Betula alleghaniensis Britt.) bearing sterile conks developed basidiocarps of Inonotus obliquus (Pers. ex Fr.) Pilát regardless of stem treatments: felled, felled and bucked into bolts, felled and bark stripped, deep girdled, and poisoned. The greatest number of basidiocarps appeared on stems that were felled and stripped or felled and bucked, and the least developed on stems merely felled or poisoned. No fruiting developed on stems 43 cm dbh or larger regardless of treatment. The basidiocarps developed within a 7- to 12-year period. The decay zone of 1. obliquus moved to within 0.3-2.5 cm of the outer sapwood prior to pressure ridge formation and subsequent basidiocarp development. Basidiocarps developed in close proximity to sterile conks. A close structural similarity exists between hyphal form and arrangement in the pressure ridges and sterile conks. Forest Sci. 22:431-437.

Keywords: Betula alleghaniensis; Poria obliqua; Stem decay control; sterile conk

Document Type: Journal Article

Affiliations: Professor, Department of Botany and Forest Pathology, State University of New York College of Environmental Science and Forestry, Syracuse, New York 13210

Publication date: December 1, 1976

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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