| Drought-tolerance at the seedling stage affects seriously germination of seeds and survival of young plants.Using 25% polyethyleneglycol(PEG) solution,germinated seed number,chlorophyll content and seedling-stage peroxide(POD) activity of 8 maize hybrids varieties were tested.The results showed that drought-tolerance coefficients,caculated from germinated seed number,were siginificantly different among hybrids,and germination ability of flinty kernels were better than that of dented ones;that chlorophyll content of seedling leaves increased differently after selection for seed gemination in the PEG solution;and that leaf POD activities were different in check treatments and increased after osmosis stress treatments,but degrees of increase were different among the hybrid varieties. |