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《Seed》 2011-01
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Effects of PEG-Soaking on Stored Seeds Vigor and Seedlings Stress Resistance of Weixian Radish

LI Yuan-yuan1,SUN Hai-yan1,LIU Hua1,WANG Bing-lin2(1.Department of Bioengineering,Weifang Academy,Weifang Shandong 261061,China;2.Weifang Academy of Agricultural Sciences,Weifang Shandong 261071,China)  
In this study,with Weixian radish seeds harvested in for four years and stored at room temperature as material to study different storage time on seed vigor and the relationships among seed vigor,stress resistance of seedlings,and polyethylene glycol(PEG) concentration after soaking with PEG.The results showed that vigor of radish seeds decreased with storage time,and two years stored at room temperature had little effect on seed vigor.After soaked with PEG,seed vigor improved,POD of seedling enhanced,and proline content increased.However,the most appropriate PEG concentration was different for radish seeds stored different years.The seeds germination rate was the highest which stored at room temperature for three years and treated with 300 mg/L PEG.The Weixian radish seeds could not be used as seeds stored for more than four years at room temperature,because the seed germination rate was below the radish seed standards,even though treated with PEG.
【Fund】: 山东省优秀中青年科学家科研奖励基金项目(BS2009NY017);; 2009年潍坊市科学技术发展计划项目
【CateGory Index】: S631.1
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