不同植物激素对月季切花保鲜效果的影响

The Effect of Different Plant Hormones on the Preservation of Cut Rose Flowers

选用月季切花为实验对象,采用室内瓶插法,以蒸馏水作为对照组,分别添加50 mg/L激动素(KT)、赤霉素(GA)和生长素(IAA)为处理组,测定整个花期花瓣中与衰老有关的生理生化指标。结果表明:激动素(KT)、赤霉素(GA)和生长素(IAA)三种植物激素均能降低花瓣中丙二醛(MDA)、相对电导率、O2−产生速率,提高可溶性蛋白含量、可溶性糖含量、抗氧化酶活性,从而延缓月季切花的衰老。其中KT处理组的抗氧化酶活性最强,MDA含量、相对电导率和O2−产生速率最低,说明KT处理对月季切花效果最为显著。

Rose cut flowers were selected as the experimental subjects, and indoor bottle planting method was used. Distilled water was used as the control group, and 50 mg/L agonist (KT), gibberellin (GA), and auxin (IAA) were added as the treatment group. Physiological and biochemical indicators related to aging in the petals of the entire flowering period were measured. The results showed that three plant hormones, namely kinin (KT), gibberellin (GA), and auxin (IAA), can all reduce malondialdehyde (MDA), relative conductivity, and The production rate of O2− increases the content of soluble protein, soluble sugar, and antioxidant enzyme activity, thereby delaying the aging of cut roses. Among them, the KT treatment group had the strongest antioxidant enzyme activity, and had the lowest MDA content, relative conductivity, and O2− production rate, indicating that KT treatment has the most significant effect on cut rose flowers.