Abstract: Using two sweet corn seeds of Guangdong Tian and Huazhen No. 2 as materials，the effects of different stress treatments on the utilization and consumption of stored substances during seedling germination were discussed. The results showed that under three stress treatments，the seedling growth of Guangdong Tian sweet corn seeds was better than that of Huazhen No. 2. Within 10 days of the germination period，the consumption rate of seed storage materials of both cultivars maintained an upward trend. However， the utilization rate of stored substances showed a trend of increasing first and then stabilizing or decreasing. Correlation analysis showed that seedling quality was significantly correlated with the utilization rate of stored substances. By analyzing the effects of different stress treatments on the consumption and utilization rate of storage substances at the germination stage of sweet corn seeds， this paper provides a theoretical basis for improving the germination and seedling growth of sweet corn seeds.

Key words: sweet corn, seed germination, seedling growth, utilization and consumption of stored substances