Drought Tolerance of Pine Seedlings under Various Climatic Conditions
Abstract:Tolerance of water stress by seedlings of Pinus taeda L., P. echinata Mill., and P. radiata D. Don was evaluated under four combinations of temperature and humidity in controlled environment chambers. There was a strong relationship between temperature and humidity and the ability of seedlings to survive after cessation of watering. Survival time of seedlings of all three species was shortest in the dry, warm environment and longest in the moist cool environment. Soil water potential at seedling death was lower for P. radiata than for the other species in all four environments and lowest in the moist cool environment. Soil water potential at seedling death was lowest for seedlings of P. echinata and P. taeda in the moist warm environment. It appears that P. radiata is more drought tolerant than the other two species, as measured by soil water potential at seedling death, in dry warm, dry cool, and moist cool environments, but in a moist, warm environment there is little difference among the three species. Forest Sci. 21:72-82.
Document Type: Journal Article
Affiliations: James B. Duke Professor of Botany, Emeritus, Duke University, Durham, North Carolina
Publication date: 1975-03-01
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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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