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Study on Effects of Different Nitrogen Rates on Physiological and Biochemical Characteristics of Flue-cured Tobacco K326

Ding Jin-ling

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Abstract

The effects of nitrogen application on several enzyme activities: the contents of chlorophyll,nitrate reductase (NR),superoxide dismutase (SOD),catalase (CAT), malondialdehyde (MDA) and polyphenol oxidase (PPO) were studied with the cultivar K326 under pot experimentThe results showed that the contents of chlorophyll,the activities of NR,SOD,CAT and PPO increased with the increase of nitrogen ratio,while the contents of MDA decreased.Although the degreed of changes were different on leaf position, but the optimum amount of nitrogen fertilization is 120kg/hm~2(7.92g per plant).

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What this paper is about

The effects of nitrogen application on several enzyme activities: the contents of chlorophyll,nitrate reductase (NR),superoxide dismutase (SOD),catalase (CAT), malondialdehyde (MDA) and polyphenol oxidase (PPO) were studied with the cultivar K326 under pot experimentThe results showed that the contents of chlorophyll,the activities of NR,SOD,CAT and PPO increased with the increase of nitrogen ratio,while the contents of MDA decreased.Although the degreed of changes were different on leaf position, but the optimum amount of nitrogen fertilization is 120kg/hm~2(7.92g per plant).

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Available abstract

The effects of nitrogen application on several enzyme activities: the contents of chlorophyll,nitrate reductase (NR),superoxide dismutase (SOD),catalase (CAT), malondialdehyde (MDA) and polyphenol oxidase (PPO) were studied with the cultivar K326 under pot experimentThe results showed that the contents of chlorophyll,the activities of NR,SOD,CAT and PPO increased with the increase of nitrogen ratio,while the contents of MDA decreased.Although the degreed of changes were different on leaf position, but the optimum amount of nitrogen fertilization is 120kg/hm~2(7.92g per plant).

Key concepts: Nitrate reductase, Catalase, Polyphenol oxidase, Malondialdehyde, Superoxide dismutase, Curing of tobacco, Chemistry, Chlorophyll

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