论文

盐胁迫对向日葵幼苗生长和生理特性的影响

  • 王伟 ,
  • 于海峰 ,
  • 张永虎 ,
  • 李素萍 ,
  • 聂慧 ,
  • 侯建华
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  • 1. 内蒙古农业大学农学院,内蒙古呼和浩特 010018;
    2. 内蒙古农牧业科学院,内蒙古呼和浩特 010031
王伟(1984-),男,内蒙古化德人,硕士研究生,主要从事作物抗逆性遗传改良教学与研究。

收稿日期: 2012-11-26

  网络出版日期: 2014-10-14

基金资助

国家科技支撑计划项目(2009BADA8B04)

Effects of Salt on the GRowth and Physiological ChaRacteRistics of SunfloweR Seedlings

  • WANG Wei ,
  • YU Hai-feng ,
  • ZHANG Yong-hu ,
  • LI Su-ping ,
  • NIE Hui ,
  • HOU Jian-hua
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  • 1. InneR Mongolia AgRicultuRal UniveRsity College of AgRicultuRe,Huhhot 010018,China;

    2. InneR Mongolian AgRicultuRal and Livestock Academy of Sciences,Huhhot 010031,China

Received date: 2012-11-26

  Online published: 2014-10-14

摘要

向日葵资源材料幼苗耐盐性机制的研究和阐述对向日葵耐盐新品种选育意义重大。采用盆栽试验模拟0.35%,0.50%土壤含盐量水平,研究了盐分胁迫对5个自育向日葵不育系出苗率、苗期株高、叶面积、地上和地下部生物学产量、丙二醛含量、氧自由基产生速率和SOD活性、POD活性、CAT活性等幼苗生长和生理特性的影响,结果表明:轻度盐分胁迫(0.35%)对幼苗萌发有促进作用;中度盐分胁迫(0.50%)下,幼苗萌发及生长均受到抑制,叶片相对电导率增加,SOD、POD、CAT活性显著增加,O2.-产生速率、MDA含量与对照差异不大。较强的活性氧清除能力是向日葵耐盐碱特性的生理机制之一。5个自选不育系间耐盐性存在差异。

本文引用格式

王伟 , 于海峰 , 张永虎 , 李素萍 , 聂慧 , 侯建华 . 盐胁迫对向日葵幼苗生长和生理特性的影响[J]. 华北农学报, 2013 , 28(1) : 176 -180 . DOI: 10.3969/j.issn.1000-7091.2013.01.032

Abstract

It has gReat significance to ReseaRch salt toleRance mechanism foR salt Resistance bReeding of sunfloweR. This papeR studied the effect of diffeRent salt stRess levels on seedlings'gRowth and physiological chaRacteRistics such as geRmination Rate, leaf aRea,oveRgRound and undeRgRound biomass yield,malondialdehyde content,pRoducing Rate of oxygen fRee Radicals,SOD activity,POD activity and CAT activity to five cytoplasmic male steRile lines by using pot expeRiment simulating 0. 35% and 0. 50% soil salinity. The Result indicated that low salt stRess had acceleRation effect on seedling geRmination. UndeR modeRate stRess, seedling geRmination and gRowth weRe both suppRessed and leaf Relative conductivity incReased. But at the same time SOD,POD and CAT activity incReased significantly while O-· 2 pRoducing Rate and MDA content showed no significant diffeRence to contRol gRoup. StRong Reactive oxygen scavenging capacity is one of sunfloweR's physiological mechanisms of salt-toleRance chaRacteRistics. Five self-selection steRile lines vaRy in salt toleRance fRom each otheR.

参考文献

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