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THE EFFECT OF INITIAL MOISTURE CONTENT, PACKAGING AND STORAGE PERIOD ON SUCCINATE DEHYDROGENASE AND CYTOCHROME OXIDASE ACTIVITY OF SOYBEAN SEED

Keywords: moisture content , succinate dehydrogenase , cytochrome oxidase , soybean

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Abstract:

The quality of soybean seeds decreased rapidly, so it would be difficult to keep them for a long time. This research was aimed to study the effect of initial moisture content, packaging material and storage period on succinate dehydrogenase and cytochrome oxidase activities. The experimental design used was Factorial Randomized Complete Block Design (RCBD), consisting of three factors, i.e. moisture content (8. 10 and 12 percent), packaging materials (polyethylene, wheat and aluminium foil), storage period (0, 1, 2, 3, 4, 5, and 6 months). Changes in seed water contents, specific activities of succinate dehydrogenase and cytochrome oxidase, germination and coefficients velocity of germination, were monthly determined. It was found that decrease of succinate dehydrogenase specific activity can be induced if initial seed water content is raised above 8%. Soybean seeds stored in aluminium foil bags showed high succinate dehydrogenase and cytochrome oxidase specific activities, viability, coefficient of velocity of germination and could maintain the seeds at a low moisture content to delay seed deterioration compared to seeds stored in polyethylene and wheat bags

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