S. D. SeeleyPlant Science Department, Utah State University, Logan, UT 84322
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L. E. Powell Jr.
L. E. Powell Jr.Department of Pomology, Cornell University, Ithaca, NY 14853
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Contributor Notes
Received for publication May 15, 1981.
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.