Effects of Paclobutrazol on Growth and Flower Quality in Potted-rose

By the method of spraying leaves and root rrigation,total five dfferent concentrations,with leave spraying 500,1 000,2 000 mg/L,and irragation 100,200 mg/L,total five treatments to study the effect of paclobutrazol treatment on growth and flower quality of 'Feishan'potted-rose in greenhouse.The results showed that by apraying leaves with paclobutrazol 1 000 mg/L plant height could be suitably controlled through shortening inernod and stem length,green leaves contemporarilly deepened,fresh leave and flower mass increased and flower diameter expanded,although bud turning color stage and flower blooming stage of' Feishan' were later than control experiment,in turn,its ornamental days were prolonged.Chlorophyll content and leaf photosynthesis rate increased in 'Feishan' by spraying leaves with paclobutrazol 1 000 mg/L were thought to be important to improve its flower value.