农业环境科学学报2012，Vol.31Issue(2)：270-277,8.
NO对低温胁迫下玉米种子萌发及幼苗生理特性的影响
Effects of Nitric Oxide on Seed Germination and Physiological Reaction of Maize Seedlings Under Low Temperature Stress
摘要
Abstract
The effects of sodium nitropprusside(SNP) as an exogenous nitric oxide donor at the different concentrations on the maize seed germination, growth and physiological reaction of maize seedlings under low temperature stress were studied. The results showed that the low temperature stress inhibited the maize seed germination and growth of seedlings, and increased the malondialdehyde(MDA) content and cell membrane permeability, while decreased the relative water content, the proline content and the chlorophyll content in leaves of maize seedlings. The treatments with SNP at different concentrations could promote the germination rate, germination energy, index of germination and index of vigor of maize seeds, increased growth, relative water content, the proline content and the chlorophyll content, inhibited significantly the MDA content and cell membrane permeability of maize seedlings under low temperature stress. It was shown that exogenous nitric oxide had abating effect on depressed seed germination and growth of maize seedlings, could improve the antioxygen ability of maize seedlings, debasing lipid peroxidation and protect plasma membrane from being destroyed to enhance the resistance of plants under low temperature stress. The best abating effect occurred with the SNP concentration set at 100 μmol·L-1, while higher or lower SNP content had no such satisfactory effect.关键词
一氧化氮(NO)/硝普钠(SNP)/低温胁迫/玉米/种子萌发/幼苗生理特性Key words
nitric oxide(NO)/ sodium nitroprusside(SNP)/ low temperature stress/ maize/ seed germination/ seedling physiological reaction分类
农业科技引用本文复制引用
陈银萍,王晓梅,杨宗娟,于飞,思显佩..NO对低温胁迫下玉米种子萌发及幼苗生理特性的影响[J].农业环境科学学报,2012,31(2):270-277,8.基金项目
国家自然科学基金(31060060) （31060060）
兰州交通大学"青蓝"人才工程基金(QL-08-14A) （QL-08-14A）
兰州市科技计划资助项目(2008-1-175,2009-2-20) （2008-1-175,2009-2-20）
