Browsing Theses, Dissertations and Student Research Papers (School of Forestry, pre - 1984) by Author "Hellinga, Gerald Alan"

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The effect of preconditioning light intensity on photosynthesis of seedlings of two ecotypes of Douglas-fir

Hellinga, Gerald Alan (1974-01-31)

Douglas-fir (Pseudotsuga menziesii (Mirb. ) Franco) seedlings of a high elevation Rocky Mountain source and a low elevation coastal source were pretreated under both high and low intensity artificial light in a growth ...