Effect of potassium chloride on drought resistance of potato seedlings
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 .
potatopotassium chloridedrought stressseedlingdrought resistancegrowth and development
国家科技期刊平台
NSTL
万方数据
维普
