Visiting Scientist. Present address: Professor, Department of Horticulture, University of Wisconsin, Madison, WI 53706.
National Research Advisory Council Post-Doctoral Fellow.
Submitted for publication October 18, 1982. The authors gratefully acknowledge the contributions of the Climate Laboratory Technical Systems Group staff in constructing the lighting treatments and maintaining the controlled-environment rooms used in the study. Special thanks are accorded to E.A. Halligan for assistance with the project. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.