华北农学报2011，Vol.26Issue(z1)：60-64,5.
种子超重力处理对NaCl胁迫下黄瓜的影响
Effect of Seed Hypergravity Treatment on Cucumber under NaCl Stress
摘要
Abstract
The objective of this study was to investigate the relationship of seed hypergravity treatment and cu cumber 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 hyperg ravity of 1 000,2 000,3 000 xg for 1,2 hours respectively,every index including germination rate,germination in dex and vigor index significantly improved than the values in NaCl stress,in which effect of 2 000 ×g,2 h seed hyper gravity 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 dif ferent 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.关键词
超重力处理/NaCl胁迫/黄瓜Key words
Hypergravity treatment/NaCl stress/Cucumber分类
农业科技引用本文复制引用
陈淑芳,沈孟洁..种子超重力处理对NaCl胁迫下黄瓜的影响[J].华北农学报,2011,26(z1):60-64,5.基金项目
安徽科技学院引进人才基金项目(ZRC2007142) （ZRC2007142）
安徽省教育厅优秀人才专项(2009SQRZ109) （2009SQRZ109）
