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《Chinese Journal of Tropical Crops》 2015-02
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Effects of Drought Stress on the Physiological Characteristics of Cassava Seeding

SHAN Zhongying;LUO Xinglu;FAN Wujing;LUO Xuan;Agronogy College,Guangxi University;State Key Laboratory for Conservation and Vtilization of Subtropical Agro-bioresources;  
In order to investig ate the physiological characteristics of cassava under various drought stresses, the seedlings of ‘ Xinxuan 048' were grown under the water supply regimes of 20%, 40%, 60% and 80% water-holding capacity respectively in a greenhouse, with no water supply as the control. The results showed that, with the increasing of water supply, plant height, stem diameter, total water content, free water content and the rates of free water and bound water in leaves increased; while the content of proline, soluble sugar(SS), soluble proteins,the cell membrane permeability, and the activities of superoxide dismutase(SOD), peroxidase(POD) decreased. In short, the grouth of cassava seedings were getting worse with the aggravating drought degree, and the best water condition was 80% of field soil moisture capacity in the study.
【Fund】: 广西科技攻关项目(桂科攻No.1222014);; 广西水利厅科技项目(No.201413);; 南宁市科技攻关项目“木薯需水特性与节水灌溉技术研究与示范”(No.20132307)和“高产优质木薯新品种选育及配套高产高效栽培技术示范推广”(No.201109044B);; 国家现代农业产业体系广西薯类产业创新团队薯类功能专项(No.nycytxgxcxtd-03-11-2);; 国家自然科学基金重点项目(No.U1033004-09)
【CateGory Index】: S533
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