to solutions containing sucrose and hydroxyquinoline sulfate for increasing flower and leaf longevity of Alstroemeria cut flowers (Alstroemeria hybrid cv. Setpoint) was investigated. Results showed that pulse treatment of Alstroemeria cut flowers with 30 g L-1 sucrose + 10 µM thidiazuron + 200 mg L-1 hydroxyquinoline sulfate significantly delayed petal abscission (3.3 days) and leaf yellowing (25.7 days) compared to untreated control flowers.