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Effect of Spraying Different Plant Growth Regulators on the Contents of Pigments in Cutters of Flue-cured Tobacco

WANG Zhan-yi1,SONG Zhao-peng1,DAI Li2,GAO Yuan1,GONG Chang-rong1* (1.College of Tobacco Science,Henan Agricultural University,Zhengzhou 450002,China;2.Shenzhen Boton Flavours and Fragrances Limited Company,Shenzhen 518051,China)  
Effect of spraying salicylic acid(SA),gibberellin(GA3)and ethephon(ETP)on the contents of pigments after top-cutting were studied.The results showed that chlorophyll,cartenoids and polyphenol compounds were degraded more than control by spraying gibberellin(GA3).Chlorophyll and Polyphenol compounds were degraded more than control by spraying salicylic acid(SA)and ethephon(ETP),but cartenoids expressed opposite.Effection of GA3 was better than other two plant growth regulators.
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