Phenology of Cone and Shoot Development of Noble Fir and Some Associated True Firs
External development of male and female strobili, from bud burst to maturity, and of vegetative shoots was studied on noble, Pacific silver, grand, and subalpine firs. The various stages in strobili development are described and illustrated. The sequence in bud burst, male buds first and vegetative last, was consistent for all species. Pollen shedding and female receptivity were well synchronized, although cool moist weather appeared to delay onset of pollen shedding. Synchronization on individual trees makes self-pollination readily possible. Differences in timing of phenological events occurred between locations, years, and species, with noble fir being the last to develop. Forest Sci. 16:356-364.
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Document Type: Journal Article
Affiliations: Pre-Doctoral Research Associate, College of Forest Resources, University of Washington, Seattle
Publication date: 1970-09-01
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- 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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