State of the Art Seedling Stock Quality Tests Based on Seedling Physiology
This chapter describes the methodology and potential application of two physiology-based seedling assessment tests under development (variable chlorophyll fluores- cence and stress-induced volatile emissions); the applica- tion of two established seedling assessment tests which are in limited operational use (mitotic index and elec- trolyte leakage); and a short description of three other physiological assessments (tri phenyl tetrazolium chloride, days to bud break and the phytogram). The advantages and liabilities of the individual physiology-based tests are discussed. An argument is presented for the use of an integrated bat- tery of stock quality measures under varied environmental conditions, so that probability based predictions of future seedling performance can be generated. Finally, a variety of seedling assessment technologies are rated individually (sum and product) according to nine criteria. This proce- dure reinforces the hypothesis that no one test will be able to predict seedling stock quality or move forest regeneration toward the target seedling concept.
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Author(s): Christopher D.B. Hawkins, Wolfgang D. Binder
Publication: National Nursery Proceedings - 1990
Event:
Combined Meeting of the Western Forest Nursery Associations
1990 - Roseburg, OR
