Plant Physiologist. Fruit Laboratory, Horticultural Science Institute.
Horticulturist. Fruit Laboratory, Horticultural Science Institute.
Received for publication 29 May 1984. We acknowledge with appreciation the technical assistance of Linda Falbo, Judith Fielder, and Julie Russell. Mention of a trademark, proprietary product, or vendor does not constitute a guarantee or warranty by the USD A and does not imply its approval to the exclusion of other products or vendors that may also be suitable. 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.