Abstract:

The studies of effects of precool time and different concentration of preservative solutions on cut flower were carried out, to keep cut flower fresh for Narcissus pseudonarcissus (cv Golden Harvest), the fresh flowers near blooming were cut up from three-year-old bulb at full-bloom stage , then to precool those flowers respectively for 24 h, 36 h, 48 h, at 5 ℃ and relative humidity for 70%, the results showed that the optimal precooling condition is 36 h , the flower reach the maximum diameter earliest and damaged lightly to flower ; the fresh flowers were refrigerated at 5 ℃ and relative humidity for 70% for 36 h ,then keep in different concentration solution of SUG and 8-HQC,AgNO3 and 6-BA, the results showed that keeping the flowers in the solution of 5% SUG＋200 mg/L 8-HQC＋45 mg/L AgNO3＋5 mg/L6-BA, could prolong vase life , increase maximum diameter and delay reduction velocity of fresh weight in‘Golden Harvest’, in the optimal condition, the vase life could keep for 14.5 d, the maximum diameter could reach 9.21 cm, and maintain full-bloom for 3.6 d,and also no susceptibility to moulds.