超干的玉米种子在加速老化过程中生理生化指标的变化  

Physical and Biochemical Indices Changes of Ultra-dry Storage Maize Seeds during Artificial Aging

作　　者：张海娇 张耀川[1] 白素兰[2] ZHANG Hai-jiao;ZHANG Yao-chuan;BAI Su-lan(Beijing Vocational College of Agriculture,Beijing 102442;School of Life Science,Capital Normal University,Beijing100048)

机构地区：[1]北京农业职业学院,北京102442 [2]首都师范大学生命科学学院,北京100048

出　　处：《安徽农业科学》2018年第33期1-4,共4页Journal of Anhui Agricultural Sciences

基　　金：北京农业职业学院院级项目(XY-YF-16-02)

摘　　要：[目的]研究超干贮藏种子的耐贮性和可以保持的优良生理生化指标。[方法]以郑单958、先玉335、京单28和农大108为试验材料,采用超干处理后进行人工老化处理,回湿后测定其发芽率、发芽指数、活力指数、电导率和淀粉含量等指标,通过多个生理生化指标的测定来衡量种子衰老的速度。[结果]不同玉米品种各处理的衰老速度为对照(CK)>8%>5%。玉米种子在超干贮藏中呼吸弱,萌发过程中细胞膜修复的好,活力指数高,适合超干贮藏,在超干贮藏中的适宜水分含量可达到5%。[结论]该研究可为衰老玉米种子的生产应用提供理论依据。[Objective]Storability and physical and biochemical indices of ultra-dry storage seeds were studied.[Method]Taking maize varieties Zhengdan958,Xianyu335,Jingdan28 and Nongda108 as test material,through dry processing,germination rate,germination index,vitality index,electronic conductivity,starch content were detected to evaluate the speed of seed senescence after re-humidification.[Result]The senescence speed of different maize varieties was CK>8%>5%.Under ultra-dry storage condition,their respiratory rate was slow,cell membrane was repaired better during germination,vigor index was high,the suitable moisture content can reach 5%.[Conclusion]The research can provide theoretical basis for the production and application of senescent maize seeds.

关 键 词：超干贮藏 活力指数 淀粉含量 电导率 比较分析法 

分 类 号：S513[农业科学—作物学]