添加外源物质硅对NaCl胁迫下玉米幼苗的缓解作用  

Relief Effect of Added Exogenous Substances Si^(4+) under NaCl Stress on Maize Growth

作　　者：王霞[1,2] 杨智超[3] 钱海霞[1] 高树仁[1] 孙丽芳[1] 

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]农业部寒地作物生理生态与省高校寒地作物品种改良与生理生态重点开放实验室,黑龙江哈尔滨150030 [3]黑龙江省农垦总局农业局,黑龙江哈尔滨150036

出　　处：《安徽农业科学》2013年第17期7404-7405,共2页Journal of Anhui Agricultural Sciences

基　　金：黑龙江省八一农垦大学博士启动基金;农业部寒地作物生理生态与省高校寒地作物品种改良与生理生态重点开放实验室开放课题

摘　　要：[目的]揭示硅在玉米自交系耐盐生理中的作用与机制,为硅的施用及在盐碱条件下改善作物的生长提供参考。[方法]以玉米自交系黄早四为材料,采用蛭石培养法,浇灌1/2霍格兰营养液,在幼苗三叶一心期进行150 mmol/L NaCl胁迫处理,同时添加不同浓度的硅(Na2SiO3·9H2O),测定玉米幼苗的株高、鲜重和干重及其各自的变化率,研究它对玉米幼苗生长的影响。[结果]各个指标均在硅浓度为3 mmol/L时表现最优。[结论]在玉米苗期添加适宜浓度的硅可以适当缓解玉米自交系的盐胁迫。[ Objective] The effects and mechanisms of Si on the salt tolerance physiology of maize inbred line were revealed to provide the refer- ence for the growth under the condition of Si application and salt and alkali stress. [ Method] A Vermiculite as watering 1/2 hoagland nutrient so- lution culture was conduced to study the effect of different concentration of Si4＋ （Na2SiO3 ~ 9H20） under 150 mmol/L concentration NaC! stress on the maize inbred line-Huang Zaosi, the height, [i＇esh weight, dry weight, the height rate of change, fresh weight of change, and dryweight. [ Result] The indicators pex^formance was obvious when the concentration of Si4＋ was 3 mmmol/L. [ Conclusion] The appropriate Si4＋ supply could enhance the tolerance in maize growing in salt stress.

关 键 词：硅 盐胁迫 玉米 苗期 自交系 

分 类 号：S432.31[农业科学—植物病理学]