2Binder W D, Fielder P. Seasonal changes in chlorophyll fluorescence of white spruce seedlings from different latitudes in relation to gas exchange and winter storability. New Forests,1996a,ii, 207～232.
3Binder W D, Fielder P. Chlorophyll fluorescence as an indicator of frost hardiness in white spruce seedlings from different latitudes. New Forests,1996b,11: 233～253.
4Cannell M G R, et al. Sitke spruce and Douglas fir seedlings in the nursery and in cold storage: Root Growth potential ,Carbohydrate content, Dormancy , Frost hardiness and Mitotic index, Forestry,1990, 63(1),10～27.
5Farquhar G D, Richards R A. Isotope composition of plant carbon correlates with water use efficiency of wheat genotypes. Aust J Plant Physlol,1984,11:539～552.
6Oeacintov N E, et al. Energy transfer and fluorescence mechanism in :CRC Crit Rev Plant Sci.1987,55:1～44.Chemical rubber company Boca Raton Florida.
7Gillies S L. A physiological study of fall dormancy and spring reactivation of photosynthesis in seedlings of white spruce CPicea glauca (Moench) Voss] and Douglas fir [Pseudotsuga menziesii ( Mirb. ) ]. Ph D Thesis, Department of Biological Sciences, Simon Fraser University, Burnaby, B.C. Cana-da, 1993.
8Guehl J M, A Clement, P Kaushal, G Aussenac. Planting stress, water status and non-structural carbohysrate concentrations in Corsican pine seedlings. Tree Physiol,1993, 12～173～183.
9Hawkins C D B,Binder W D. State of the art seedling stock quality based on seedling physiology:91～122. In: Rose R ,Campbell S J and Landis T D. (Eds) Target SeedlingSymposium: Proc. Combined Meet. Western For. Nursery Assoc,, US Dep Agric For Serv, Gen Tech Rep. RM-200, Fort Collins, CO. Chap. 8,1990.
10Hipkins M F, et at (eds). Photosynthesis energy transduction: A practical approach, IRL press, Oxford,1986.
