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On the Mechanism of Aging in Soybean Seeds ¹

Department of Agronomy, University of Nebraska, Lincoln, Nebraska 68583

Changes in seeds of soybeans (Glycine max [L.] Merr. var. Wayne) which occur during accelerated aging (41 C, 100% relative humidity) showed subsequent loss of vigor, a decline in early respiratory activity, increased leakage of electrolytes, losses of as much as 10% dry weight from imbibing cotyledons, and a decrease in the swelling response of the imbibing system (seed plus H₂O). Each of these changes with aging is interpreted as resulting from deteriorative changes in membranes.

³ Present address: Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, New York 14853.

¹ Published as Paper No. 5376, Journal Series, Nebraska Agricultural Experiment Station.