摘要
[目的]通过观察玉米杂交种在干旱环境下的生长性状表现,用玉米幼苗期的萌发抗旱指数来评价玉米的抗旱性,为抗旱品种选育提供借鉴。[方法]采用PEG-6000水溶液模拟干旱环境,比较4个玉米品种在幼苗期的发芽率、萌发性状的变化。[结果]随着天数的增加,4个品种的发芽率都表现为先增加后降低,在10%~15%的PEG-6000水溶液浓度下玉米品种的发芽率高于其他浓度处理;N7、NT3在干旱胁迫下种子萌发指数相对较高。从萌发抗旱指数的差异分析来看,N7、NT3与N3、T3有极显著差异。[结论]N7、NT3的萌发性状表现同抗旱指数差异性一致,可以用来鉴定玉米萌发期的抗旱性强弱。
[Objective] The drought resistance of maize was evaluated by germination drought resistance index at seedling stage, which could be used for reference in breeding drought resistant varieties.[Method] PEG-6000 aqueous solution was used to simulate the drought environment to compare the germination rate and germination characteristics of four maize varieties in the seedling stage.[Result] The germination rate of the four varieties increased first and then decreased with the increase of days. The germination rate of10%-15% PEG-6000 aqueous solution was higher than other concentrations. N7 and NT3 had higher germination drought-resistant index. According to the difference analysis of sprout index of drought resisting, N7 and NT3 showed extremely significant differences with N3 and T3.[Conclusion] The germination characters of N7 and NT3 were consistent with the difference of drought resistance index, which could be used to identify the drought resistance of maize during germination.
作者
高琼
邹原东
GAO Qiong;ZOU Yuan-dong(Beijing Vocational College of Agriculture,Beijing 102442)
出处
《安徽农业科学》
CAS
2019年第12期32-34,共3页
Journal of Anhui Agricultural Sciences
基金
北京农业职业学院科技研发推广类项目“电泳技术在鉴定糯玉米品种及纯度上的应用”(XY-YF-18-12)
