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Effects of Exogenous Nitric Oxide on Seedling Growth and Physiological Characteristics of Capsicum frutescens L.

CHEN Shi-jun,WEI Mei-yu(Department of Life Sciences,Qiannan Normal College for Nationalities,Duyun 558000,China)  
Effects of sodium nitroprusside(SNP,an exogenous nitric oxide donor) on seedling growth and physiological characteristics of Capsicum frutescens L.were studied by the method of solution culture.Under the condition of lower concentration of SNP,the growth of root and seedling,chlorophyll a and b content of leaf,and root activity increased,while the MDA content in root and seedling was decreased;under the condition of higher concentration of SNP,reverse.The activities of SOD,POD and CAT in root and leaf were enhanced by the lower concentration SNP.The activities of SOD and CAT were decreased with the increased of SNP concentration,except for POD activity.
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