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In a common garden study, seedlings of Pseudotsuga menziesii (Douglas-fir) var. menziesii (coastal) from Lacomb, Oregon and P. menzeisii var. glauca (interior) from Clearwater National Forest, Idaho, and their F 2 hybrids were grown in nursery beds in the coastal climate near Corvallis, OR. The coastal variety was from an elevation of 245m with a mean annual rainfall of 1400mm. The interior...
This study tested the hypotheses that plant respiration and photosynthesis are genetically adapted to the native climate and that plant metabolism has little ability to acclimate to a non-native climate. Seeds from four geographically distinct seed sources (Oregon, Willamette and Deschutes and California, Mendocino and Eldorado) were used to grow 2-year-old seedlings of ponderosa pine (Pinus ponderosa...
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