Abstract

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Title:: Effect of Salicylic Acid Treatment by Spraying on the Leaf of Narcissus tazetta var.chinensis

Author(s):: ZHANG Xinzhi1; LIU Xiaomin1; ZHANG Ruijing2; WU Yueqin2; SHI Yimin1; TANG Dongqin1; （1.School of Agriculture and Biology，Shanghai Jiao Tong University，Shanghai 200240；2.Shanghai Seed Industry Group，Shanghai 201615）

Keywords:: Narcissus tazetta var.chinensis; salicylic acid (SA); height regulation; flowering traits

Abstract:: Using Narcissus tazetta var.chinensis as material,the effect of salicylic acid (SA)onits growth and plant type and flowering time regulation by spraying SA with different concentrations were studied.The results showed that the plant height of Narcissus tazetta var.chinensis was decreased under SA treatment，flowering time was postponed and the flowering period was extended.The best effect on plant height was observed under SA treatment with 600 mg/L,the plant height was decreased 8.8% by compared with CK，the best effect on stalk height was observed under SA treatment with 800 mg/L，and the stalk height was decreased 13.0% by compared with CK.The most obvious effect on delaying flowering was observed under 800 mg/L SA treatment，which was ten days later by compared with CK.The longest flowering period was observed under 100 mg/L SA treatment，which lasted up to 29 days and extended 7 days by compared with CK.In addition，there was a significant difference in leaf width，leaf thickness，stalk number and stalk strength by spraying SA.However,there was no significant effect on the number of plantlet number，leaf number，stalk number and flower number by spraying SA.