关键词: 超甜玉米, 药沙, 种子活力, 生理变化

Abstract:

Effect of seed priming combined with chemical treatment on improving seed vigor of super sweet corn (Zea mays L. saccharata Sturt) was investigated. Results showed that seed vigor of super sweet corn “Green Superman” was significantly enhanced by all four methods. The electrolyte leakage of seeds treated by sand priming plus chemical was significantly decreased and the slowest electrolyte leakage was observed in the seeds treated by sand priming plus riboflavin. And the CAT and SOD activities of seedlings treated were significantly increased and their degradation was alleviated in low temperature stress. On this basis, further research was done on effect of sand priming plus riboflavin on seed vigor of other seven super sweet corns. Results suggested that their percentage of seedling emergence, speed of seedling emergence, membrane system integrality or SOD activity of different hybrids were significantly improved.

Key words: Super sweet corn, Chemical-sand, Seed Vigor, Physiological Changes