【摘要】 本文研究了不同保鲜剂对洋桔梗切花瓶插寿命及形态指标、生理指标的影响，以期筛选出能延长其瓶插寿命的保鲜剂。结果表明，3%蔗糖+50 mg/L硫酸铝+0.1%柠檬酸+300 mg/L 8-HQ保鲜效果最为明显，洋桔梗瓶插寿命达到了13 d。该处理花瓣中可溶性糖含量和可溶性蛋白质含量增加，游离脯氨酸含量和细胞膜透性下降，可有效延缓切花衰老。在瓶插期间，洋桔梗切花的呼吸强度有突然升高后降低的现象，推断洋桔梗属呼吸跃变型花卉。更多还原

【Abstract】 The effects of different preservatives on the vase-life, morphological indexes and physiological indexes of Eustoma grandiflorum were studied in this paper, so as to select a preservative to prolong the vase-life of Eustoma grandiflorum. The results showed that the effect of 3%sucrose+50 mg/L Al2(SO4)3+0.1%citric acid+300 mg/L 8-HQ was most significant, and the vase-life of Eustoma grandiflorum was 13 d. Meanwhile, the contents of soluble sugar and soluble protein in petals increased, and the contents of free proline and cell membrane permeability declined. It could effectively delay senescence of the cut flower. During the vase planting, the respiratory intensity of Eustoma grandiflorum increased suddenly and then decreased. Therefore, it infers that Eustoma grandiflorum belongs to the respiratory climacteric flower.更多还原