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Effects of Exogenous Chitosan on Physiological Characteristics of Cucumber Seedlings under Drought Stress

Liqiang Gu, Chunxiang Li, Qiao Yong-xu, Gao Feng-ju, Hong Laura Lu

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Abstract

To study the effect of Chitosan(CTS) on the physiological characteristics of cucumber seedlings(Qiubao No.1)under drought stress,the content of chlorophyll,content of water,MDA,proline,soluble protein and sugar and the CAT activity of sprayed 150 mg/L CTS cucumber seedlings(Qiubao No.1)under PEG 6000 were determined.The results showed that,compared to drought stress,the chlorophyll content of cucumber seedlings was increased by 6.7 %,the relative water content of leavies was increased by 27.9 %,the activity of CAT was increased by 49.0 %,the content of MDA decreased 53.7 %,the content of free proline was increased by 144.2 %,soluble protein and sugar was increased by 26.1 % and 17.3 % by CTS treatment.The conclusions was drawn that CTS could improve the photosynthetic rate,activity of protection enzyme and content of osmoregulation substance to reduce the effects of drought stress.

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What this paper is about

To study the effect of Chitosan(CTS) on the physiological characteristics of cucumber seedlings(Qiubao No.1)under drought stress,the content of chlorophyll,content of water,MDA,proline,soluble protein and sugar and the CAT activity of sprayed 150 mg/L CTS cucumber seedlings(Qiubao No.1)under PEG 6000 were determined.The results showed that,compared to drought stress,the chlorophyll content of cucumber seedlings was increased by 6.7 %,the relative water content of leavies was increased by 27.9 %,the activity of CAT was increased by 49.0 %,the content of MDA decreased 53.7 %,the content of free proline was increased by 144.2 %,soluble protein and sugar was increased by 26.1 % and 17.3 % by CTS treatment.The conclusions was drawn that CTS could improve the photosynthetic rate,activity of protection enzyme and content of osmoregulation substance to reduce the effects of drought stress.

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Available abstract

To study the effect of Chitosan(CTS) on the physiological characteristics of cucumber seedlings(Qiubao No.1)under drought stress,the content of chlorophyll,content of water,MDA,proline,soluble protein and sugar and the CAT activity of sprayed 150 mg/L CTS cucumber seedlings(Qiubao No.1)under PEG 6000 were determined.The results showed that,compared to drought stress,the chlorophyll content of cucumber seedlings was increased by 6.7 %,the relative water content of leavies was increased by 27.9 %,the activity of CAT was increased by 49.0 %,the content of MDA decreased 53.7 %,the content of free proline was increased by 144.2 %,soluble protein and sugar was increased by 26.1 % and 17.3 % by CTS treatment.The conclusions was drawn that CTS could improve the photosynthetic rate,activity of protection enzyme and content of osmoregulation substance to reduce the effects of drought stress.

Key concepts: Proline, Sugar, Osmoregulation, Chlorophyll, Photosynthesis, Chemistry, Water content, PEG ratio

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Effects of Exogenous Chitosan on Physiological Characteristics of Cucumber Seedlings under Drought Stress — Research Paper | ScholarLens