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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (19): 215-218.doi: 10.11924/j.issn.1000-6850.2013-3294

• 林学 园艺 园林 • 上一篇    下一篇

NaCl和Na2CO3胁迫对菊芋幼苗生物量的影响

王丽娜   

  • 收稿日期:2013-12-17 修回日期:2014-02-25 出版日期:2014-07-05 发布日期:2014-07-05
  • 基金资助:
    黑龙江省农业科学院青年基金

Effect of NaCl and Na2CO3 Stress on Biomass of Helianthus tuberosus L.

  • Received:2013-12-17 Revised:2014-02-25 Online:2014-07-05 Published:2014-07-05

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摘要： 为探索菊芋的耐盐碱特性，研究菊芋幼苗的耐盐碱程度。采用无土盆栽方式，以菊芋为材料研究不同浓度的NaCl、Na2CO3胁迫下菊芋幼苗总鲜重、根、茎、叶鲜重、干重、叶绿素含量等生物量变化。结果表明：低浓度25 mmol/L的NaCl促进幼苗的生长，与对照相比生物量略增；当NaCl浓度为100~ 200 mmol/L时幼苗的生长受到抑制，生物量、叶绿素含量呈降低趋势，处理之间差异不显著；当NaCl浓度＞200 mmol/L生物量突增。低浓度的Na2CO3促进幼苗的生长，当Na2CO3浓度＞20 mmol/L幼苗的生长受到抑制，随浓度的递增生物量呈下降趋势，叶绿素含量也呈下降趋势。菊芋幼苗受碱胁迫比受盐胁迫强烈，说明菊芋幼苗具有很强的耐盐性。

关键词: 沼气, 沼气

Abstract: In order to explore the salt tolerant characteristics of Helianthus tuberosus L., study on saline alkali tolerance of Helianthus tuberosus L. seedlings was carried out. Helianthus tuberosus L. was used as material on the study of different concentration of Helianthus tuberosus L. seedlings under NaCl and Na2CO3 stress, to measure the total fresh weight, root, stem, leaf fresh weight, dry weight, chlorophyll content and biomass variation by soilless culture method. The results showed that: 25 mmol/L of low concentrations of NaCl promoted seedling growth, biomass content increased; 100- 200 mmol/L of NaCl inhibited the growth of seedlings, the biomass and the chlorophyll content decreased, with insignificant difference among treatments; when the concentration of NaCl＞200 mmol/L, the biomass surged. The conclusion drawn from the study indicated that low concentrations of Na2CO3 promoted the growth of the seedlings, the concentration of Na2CO3＞20 mmol/L inhibited the growth of seedlings, the biomass decreased with increasing concentration of Na2CO3, chlorophyll content decreased. Helianthus tuberosus L. seedlings were highly influenced under stress of alkaline than salt, therefore, Helianthus tuberosus L. seedlings was salt tolerance.