关键词: 玉蝉花切花, 保鲜剂优化, 延缓衰老

Abstract: To extend the view and admire time and improve visual quality of Iris. ensata cut flowers，Box-Behnken center-united experiment was designed on the basis of single-factor test including plant hormone, organic acid and mineral salt. Then the response surface regression analysis was conducted to optimize preservative formula for I. ensata cut flowers. The results showed that the optimal preservative formula was 30 mg/L sugar + 250 mg/L 8-HQ+10.66 mg/L 6-BA+108.95 mg/L CA+909.95 mg/L CaCl2. Under these conditions, the cut flower life were 6.8 d, 3.7 d longer than that of the control group. Meanwhile, this treatment could increase the fresh weight of flower stem, remit the degradation speed of soluble protein in cut flower petal, improve SOD activity, delay the increase of MDA. This preservative formula had important practical significance for the extension of I. ensata cut flowers.

Key words: Iris ensata cut flower, optimization of preservative formula, delaying senescence