中国农学通报2025，Vol.41Issue(1)：13-18,6.
PEG模拟干旱胁迫下不同玉米品种萌芽期及苗期抗旱性鉴定
Drought Resistance Evaluation of Different Maize Varieties During Germination and Seedling Stage Under PEG Simulated Drought Stress
摘要
Abstract
In order to study the changes of germination index and physiological index of maize under PEG simulated drought stress,20% PEG-6000 was set up for drought treatment. The germination rate,germination potential,germination index,radicle length,chlorophyll value (SPAD),superoxide dismutase (SOD) activity and malondialdehyde (MDA) content of maize at germination stage were measured,and the drought resistance of different varieties was evaluated by membership function method. The results showed that compared with CK,the germination rate,germination potential,germination index and radicle length of each maize variety decreased under drought stress,the chlorophyll value and SOD activity decreased,and the MDA content increased. The average value of the membership function of'Xinnong 008'was greater than 0.7,which was a strong drought-resistant variety. The average value of membership function of'Zhongyu No.9','Zhongyu No.1' and'Woyu No.3'was less than 0.4,which belonged to weak drought-resistant varieties.关键词
PEG模拟干旱胁迫/玉米/萌芽期/苗期/生理指标/抗旱性/隶属函数法Key words
PEG simulated drought stress/corn/embryonic stage/seedling stage/physiological index/drought resistance/membership function method分类
农业科技引用本文复制引用
徐奕琳,徐东东,张盼盼,张逸康,李鲜花..PEG模拟干旱胁迫下不同玉米品种萌芽期及苗期抗旱性鉴定[J].中国农学通报,2025,41(1):13-18,6.基金项目
国家自然科学基金项目(31760209) （31760209）
榆林市科技计划项目(CXY202190) （CXY202190）
榆林学院2024年研究生创新基金项目(2024YLYCX17). （2024YLYCX17）
