Received for publication April 21, 1975. Michigan State University Agricultural Experiment Station Journal Article No. 7213. This research supported in part by a grant from Pickle Packers International.
Research Associate, Department of Biochemistry; Associate Professor and Graduate Technician, Department of Horticulture; and Professor, Department of Biochemistry; respectively. Present address of senior author is The Hebrew University of Jersalem, Rehovot, Israel.