Present address: Dept. of Pomology, Cornell Univ., Ithaca, N.Y.
Professor of Pomology.
Staff Research Associate.
Received for publication 3 June 1986. Acknowledgment is made for financial support of the Almond Board of California and for technical assistance of Linda Liu and Hamid Ahmadi. Appreciation is extended to R.S. Bringhurst and L.L. Wu (Dept. of Environmental Horticulture) for the use of their laboratories. Appreciation is also extended to R. Bringhurst, J. Harding, D. Parfitt, and S. Arulsekar for critical readings of the manuscripts. 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.