Effects of B_9 and CCC on the Growth,Flowering and Physiological Characteristics of Chrysanthemum morifolium

[Objective] The study was to research the effects of B9 and CCC with different concn.on the growth,flowering and physiological characteristics of Chrysanthemum morifolium and provide the theoretical basis for dwarfing cultivation of C.morifolium.[Method] In the pot test,with the treatment of spraying clear water as CK,B9 and CCC with different concn.(500,800,1 000,1 200 and 1 500 mg/L)were sprayed on C.morifolium to study their effects on the growth,flowering and physiological characteristics of C.morifolium.[Result] The plant height,the branch number and the leaf number of C.morifolium were significantly decreased,and the dwarfing effect was obvious when B9 was higher than 1 000 mg/L or CCC was higher than 1 200 mg/L.B9 and CCC all could delay the flowering date to different degree.After B9 and CCC were sprayed on C.morifolium,the content of chlorophyll and soluble sugar in leaves was significantly increased,the leaf color became deeper,and the photosynthetic efficiency was increased.[Conclusion] 1 000 mg/L B9 and 1 200 mg/L CCC had better comprehensive effects on improving plant type of C.morifolium and increasing its ornamental value and physiological quality.