| 盐胁迫对燕麦K+、Na+含量和光合性能的影响 |
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| 引用本文： | 高小丽,刘淑英,王 平,苏小娟,樊 仙. 盐胁迫对燕麦K+、Na+含量和光合性能的影响[J]. 西北农业学报, 2010, 19(2): 106-110 |
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| 作者姓名： | 高小丽 刘淑英 王 平 苏小娟 樊 仙 |
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| 作者单位： | 内蒙古农业大学,农学院,呼和浩特010019 |
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| 基金项目： | 国家自然科学基金项目，内蒙古自然科学基金重大项目，公益性行业(农业)科研专项经费 |
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| 摘 要： | 采用NaCl与Na_2SO_4不同盐分含量进行盆栽试验.盐胁迫下,植株生长受到明显的抑制,受盐胁迫影响程度的顺序是单株干质量＞单株绿叶面积＞株高;叶片中叶绿素(Chl)含量随着土壤含盐量的增加呈下降趋势,小于0.3%含盐量的下降幅度大于高盐胁迫,盐胁迫对叶绿素b(Chlb)的影响大于叶绿素a(Chla);燕麦幼苗的离子运输具有选择性,根具有贮Na~+的作用,茎具有贮K~+的功能,随着盐胁迫的加强,各器官K~+的含量在逐渐下降,Na~+的含量逐渐上升,大于0.6%盐胁迫幼苗丧失了对离子的选择性.盐胁迫Pn、WUE呈下降趋势,Gs、Tr和Ci的变化趋势是低盐胁迫下升高、高盐胁迫下降低.0.2%盐胁迫可促进燕麦幼苗生长和光合能力加强;燕麦对于0.3%含盐量有一定的耐性;大于0.3%盐胁迫时,燕麦幼苗生理代谢受到严重影响;大于0.5%盐胁迫时,光合受阻,生长受到严重抑制.
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| 关 键 词： | 盐胁迫 光合性能 K~+、Na~+含量 燕麦 幼苗 |
Effects of Salt Stress on Oat Seedling Growth and Selective Absorption of K+and Na+and Photosynthetic Characters |
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| GAO Xiaoli,LIU Shuying,WANG Ping,SU Xiaojuan,FAN Xian. Effects of Salt Stress on Oat Seedling Growth and Selective Absorption of K+and Na+and Photosynthetic Characters[J]. Acta Agriculturae Boreali-occidentalis Sinica, 2010, 19(2): 106-110 |
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| Authors: | GAO Xiaoli LIU Shuying WANG Ping SU Xiaojuan FAN Xian |
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| Affiliation: | WU Junying,LIU Jinghui , LI Qian(Agricultural College,Inner Mongolia Agricultural University,Huhhot 010019,China) |
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| Abstract: | The pot plant experiment were conducted with different salt(NaCl and Na2SO4) concentration.The plant growth under salt stress were obviously inhibited,the order was plant height > leaf area per plant > dry weight per plant;The contents of chlorophyll(Chl) showed downtrend with the increase of salt content,less than salt concentration 0.3% it was decreased faster than high salt stress,the effect of chlorophyll b under salt stress is stranger than chlorophyll a;Oat seedling have selective absorption to ion tr... |
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| Keywords: | Salt stress Photosynthetic characters K~+ Na~+ contents Oat Seedling |
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