干旱地区农业研究Issue(3)：29-34,6.
氯化钾对干旱胁迫下马铃薯幼苗抗旱性的影响及其机制研究
Effect of potassium chloride on drought resistance of potato seedlings
摘要
Abstract
Effect of potassium chloride (KCl ) on drought resistance of potato seedlings were investigated .The re-sults showed that KCl relieved the typical symptom of leaf produced by drought ,such as maintaining contents of water , chlorophyll ,and MDA and increasing the contents of proline and soluble sugar and the activities of superoxide dismutase (SOD ) and catalase (CAT ) .In addition ,it decreased transpiration rate ,whereas improved the net photosynthetic rate , water use efficiency and the contents of starch and vitamin C .Plant height ,base diameter ,stolon number and yield per plant were increased by 6 .32% ,18 .28% ,13 .75% ,and 29 .45% ,respectively ,when applying 0 .7g KCl/seedling . In summary ,KCl help to develop effective resistance of potato seedling to drought by improving the water retaining capac-ity and activating the antioxidative system .关键词
马铃薯/氯化钾/干旱胁迫/幼苗/抗旱性/生长发育Key words
potato/potassium chloride/drought stress/seedling/drought resistance/growth and development分类
农业科技引用本文复制引用
孙业民,张俊莲,李真,李自龙,李朝周..氯化钾对干旱胁迫下马铃薯幼苗抗旱性的影响及其机制研究[J].干旱地区农业研究,2014,(3):29-34,6.基金项目
国家科技支撑项目（2012BAD06B03）；国家马铃薯产业技术体系（CARS -10-P18）；甘肃省农牧厅生物技术专项（GNSW -2008-07）；甘肃省科技重大专项 （）
