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Effects of Citric Acid and Malic Acid on Nicotine Content in Flue-cured Tobacco

ZHANG Jie,LU Yin-gang*,YU Jie(Agricultural College,Guizhou University,Guiyang,Guizhou 550025,China)  
In order to reduce the content of nicotine in upper leaves,citric acid and malic acid were used to reduce nicotine of upper leaves through restraining uplink transportation of nicotine.The test material was the Yunyan87,through the field trial and pot experiment.After removing the shoot apex,the stem tops were binded with tampons soaked with citric acid,malic acid in different concentrations.The results showed that different concentrations of citric acid and malic acid treatment could reduce the content of nicotine in tobacco.Compared with blank control,2 mmol/L and 6 mmol/L of citric acid could significantly reduce the content of upper leaves,with the decreasing range of 36.9% and 40.3%,respectively.
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