Effects of Ethephon on Growth,Development,Yield and Quality of Platycodon grandiflorum
Bi Sheng
Gao Xiuqing
Zhu Lixiang
Peng Dong
Zhan Ge
Abstract：Field experiment was conducted to investigate the effects of foliage spraying ethephon on growth,yield and quality of Platycodon grandiflorum.The results showed that foliage spraying ethephon could effectively reduce the internodal distance and plant height,thereby improve the lodging-resistance ability.While its effects on stem diameter and branching number were not significant.With the increase of ethephon concentration,the yield of P.grandiflorum exhibited increasing trend.The yield of P.grandiflorum treated by 0.05％ ethephon was the highest,followed by 0.07％ ethephon treatment.There was no significant difference between 0.05 ％ and 0.07％ ethephon treatment,whose yield were both significantly higher than those of other treatments.When foliage spraying 0.07％ ethephon,the contents of protein,total saponins and saponin-D increased by 3.9％,15.8％ and 49.1％,while the contents of water-soluble extracts and soluble sugar decreased by 9.0％ and 4.4％ respectively compared with the control.This suggested that the effects of ethephon on P.grandiflorum slowed concentration-dependent.Considering the yield and quality,0.07％ ethephon was the best concentration to P.grandiflorum.
Keywords：EthephonPlatycodon grandiflorumYieldTotal saponinSaponin-D
Publication Date：2017-11-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 56-58 )