Abstract:

Carbohydrate contents and α-amylases activity were determined to investigate the physiological mechanism of dormancy release with low temperature storage in tubers of Z. hybrida ‘Flamigo’, which 4, 8, 12, and 16 weeks at 6℃ storage before planting. The results showed that the longer in low temperature storage could accelerate the vegetative growth and early bloom. Cultivated 50 days, the starch contents were the highest at 4 weeks while the total soluble sugar reached the highest at 12 weeks. After 12 weeks storage, the contents of total soluble sugar and α-amylases activity decreased significantly, which indicated that the tuber dormancy had been fully released.