1Received for publication May 13, 1980. This work was performed with support from U.S. Department of Energy Contract EY-76-C-02-1338, and from a grant to L.B. from Pickle Packers, International.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.
2MSU-DOE Plant Research Laboratory.
3Present address: Department of Horticulture, Purdue University, West Lafayette, IN 47907.
4Department of Horticulture. Present address: As-grow Seed Company, Kalamazoo, MI 49001.
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