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《Acta Agriculturae Boreali-Sinica》 2011-S2
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Effect of Seed Hypergravity Treatment on Cucumber under NaCl Stress

CHEN Shu-fang,SHEN Meng-jie(College of Life Science,Anhui Science and Technology University,Fengyang 233100,China)  
The objective of this study was to investigate the relationship of seed hypergravity treatment and cucumber salt tolerance.Effect of seed hypergravity treatment on cucumber germination,seedling growth and relative physiological indexes under NaCl stress was studied.The result showed that cucumber germination,seedling growth and physiological indexes were significantly inhibited under NaCl stress.After seeds were treated with the hypergravity of 1 000,2 000,3 000×g for 1,2 hours respectively,every index including germination rate,germination index and vigor index significantly improved than the values in NaCl stress,in which effect of 2 000×g,2 h seed hypergravity treatment was the best.Added the strength of hypergravity to 4 000×g,germination rate had not obvious change for 1 hours treatment,every index significantly decreased in other treatments.In seedling period,there was different effect between 2 000×g,2 h seed hypergravity and NaCl combined treatment and sole NaCl treatment.Seedling biomass significantly increased,root activity,chlorophyll content and SOD activity significantly improved,MDA content significantly decreased in combined treatment than in sole NaCl treatment with certain concertration.Seed hypergravity treatment could improved cucumber seed germination and seedling biomass,actively regulated physiological indexes in seedling period under NaCl stress,which alleviated stress injury and strengthened plant salt tolerance.
【Fund】: 安徽科技学院引进人才基金项目(ZRC2007142);; 安徽省教育厅优秀人才专项(2009SQRZ109)
【CateGory Index】: S642.2
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