硫酸锌处理对玉米种子萌发的生理效应  

Physiological effects of zinc sulphate on maize seed germination

作　　者：杨建肖[1] 杨国航[2] 孙世贤[3] 边秀举[1] 边大红[1] 崔彦宏[1] 

机构地区：[1]河北农业大学农学院,河北保定071001 [2]北京市农林科学院玉米研究中心,北京100097 [3]全国农业技术推广中心,北京100026

出　　处：《植物营养与肥料学报》2009年第2期410-415,共6页Journal of Plant Nutrition and Fertilizers

基　　金：北京农业育种基础研究创新平台,北京市自然科学基金项目(YZPT02);国家“十五”科技重大专项;国家“十一五”科技支撑计划重大项目“粮食丰产科技工程”河北省课题(2004BA520A07,2006BAD02A08)资助

摘　　要：以郑单958和农大108为材料,研究了硫酸锌浸种对老化玉米种子萌发及萌发过程中生理特性的影响。结果表明,适量的锌处理显著提高了玉米种子的发芽势、活力指数和单株幼苗干重,增强了种子萌发过程中的过氧化物酶(POD)、过氧化氢酶(CAT)、脱氢酶活性,降低了丙二醛(MDA)含量,增加了可溶性糖和可溶性蛋白含量。不同品种锌的适宜浓度不同,其中郑单958品种以0.4 g/L锌处理效果最好,而农大108品种以0.8 g/L的锌作用效果为佳。表明硫酸锌处理加快了玉米种子的萌发速率,提高了玉米种子萌发期间的抗氧化水平,减缓了脂质过氧化作用,促进了种子萌发时的物质代谢。Using the summer maize hybrids Zhengdan958 and Nongda108 as the experimental materials, the effects of ZnSO4 on the germination of maize aging seed and some physiological characteristics were analyzed. The results showed that suitable Zn^2＋ concentration significantly increased the germination potential, seed vigor and dry weight of seedling per plant of maize. It also enhanced the activity of POD, CAT, dehydmgenase and the content of soluble sugar and soluble protein, but declined the content of MDA. The optimal Zn^2＋ concentration differed with maize hybrids. The proper concentrations for Zhengdan958 and Nongda108 were 0.4 g/L and 0.8 g/L under our experiment conditions, respectively. The results suggested that ZnSO4 treatment accelerated seed germination, enhanced antioxidation level, mitigated lipid peroxidation and improved substance metabolism of germinating seeds.

关 键 词：硫酸锌 玉米种子 萌发 生理特性 

分 类 号：S513[农业科学—作物学]