Abstract:

Vitis vinifera ‘Muscat Hamburg’ was used in this experiment to do break dormancy experiment with different chemicals, investigating the effect of breaking dormancy and the changes of the resistant materials during dormancy by using exogenous growth regulators such as cyanamide. The results showed that cyanamide (2.5%) could break dormancy steadily, sprout around ahead of 15 d, raise germination uniformity and rate, significantly improve the SOD, POD activity and inhibition the CAT activity, and have no significant effect on the content of MDA; GA3 (200 mg/L) was largely ineffective or even inhibit in breaking dormancy while significantly promote the formation of shoot buds. The germination rate was lower than the control after treatments; 6-BA (150 mg/L) had a certain effect on breaking dormancy, but had little effect on the germination rate.