Effect of Thidiazuron and Naphthalene Acetic Acid (Naa)

Alstromeria is a new cut flower in iran that due to the high performance,long life, and pretty flowers and colors diversity is highly regarded. prematureyellowing of leaves in cut flowers alstromeria before petal fall is the mostimportant factor limiting the vase life of flowers. to delay leaf yellowing andincreased quality, factorial experiment based on completely randomized designcarried out with the two factors thidiazuron (tdz) (0, 10, 20 and 50 mg l-1) andnaphthalene acetic acid (naa) (0, 10 and 20 mg l-1). results showed that themaximum vase life and the value of chlorophyll b were achieved (20 mg l-1thidiazuron 20 mg l-1 naa) and the most petals proteins was related totreatment 10 mg l-1 thidiazuron and 20 mg l-1 naa. the most petals carotenoidsand dry matter content and the least ethylene production was obtained in 10mg l-1 tdz and 10 mg l-1 naa, respectively.