Abstract:

In this study, potato (Kexin No. 13) was used as the material to study the effect of soaking application of γ- aminobutyric acid (0.2 to 5.0 mmol/L) on the potato germination. The changes of amylase activity, starch The results showed that appropriate amount of γ- aminobutyric acid may improve the germination of potato and dry matter accumulation of buds by elevating the activity of starch enzyme, promoting the decomposition of starch, increasing reducing sugar content, facilitating the plumule elongation and improving the dry and fresh weight of shoot and root. γ- Aminobutyric acid at the concentration of 1.0 mmol/L showed the optimal effect on potato germination. content, reducing sugar content, bud length, fresh and dry weight of shoot and root in seed potatoes were measured and determined in the experiment.