Abstract:

To clarify the effect of water stress on the seed storage material content during seed germination, the different concentration of PEG solution were simulated water stress on different varieties for germination test. The result showed that during the peanut seed germination, the seed soluble protein, soluble sugar and starch content showed a decreasing trend with germination time extended. And the content increased gradually with the increase of stress concentration. The seed storage material content in the stress treatment was higher than that of the control. Fat was the major peanut storage material, but the change amplitude was very small in water stress conditions and even some varieties increased slightly. The degradation rate and intensity of seed soluble protein, soluble sugar, starch, fat and the other major seed storage material were depressed during seed germination under water stress. These changes could affect the seed germination.