盐碱胁迫对不同品种藜麦渗透调节能力影响的比较研究

发布时间：2024-04-13 03:48

　　土壤盐碱化是一个迅速增长的日益严重的问题。土壤盐分和碱度是影响全球农作物产量的两个主要原因。在这项研究中,选择了两个藜麦品种进行实验。对两个藜麦品种进行盐和碱胁迫,以分析其相对水含量,无机离子含量,脯氨酸和可溶性糖含量。对于每个品种,实验中使用的盐和碱胁迫浓度分别为(NaCl:0、100、200 mM)和(NaHCO₃:0、50、100 mM)。在两种胁迫下,两种藜麦的离子含量都有很大变化。在盐碱胁迫条件下,两个品种的不同部位Na⁺含量均不同程度增加。在NaCl胁迫下,两个藜麦品种不同部位Cl^-含量均随着胁迫强度的增加而增加;而在NaHCO₃胁迫下,两个藜麦品种叶片中Cl^-含量变化趋势与NaCl胁迫相似,而茎部、根系Cl^-含量均随着胁迫强度的增加而降低。在相同条件下,藜麦叶片中Na⁺,Cl^-含量顺序依次是上部叶片<中部叶片<下部叶片。在NaHCO₃胁迫条件下,Painbon叶片中...

【文章页数】：52 页

【学位级别】：硕士

【文章目录】：
摘要
Abstract
1. INTRODUCTION
    1.1 Background
    1.2 Causes of Salinity
    1.3 Adverse effects of salinity
    1.4 Mechanism of salt tolerance in quinoa
    1.5 Classification of Chenopodium quinoa Willd
    1.6 Objectives
2. MATERIALS AND METHODS
    2.1 Plant material and growth conditions
        2.1.1 Salt treatment
    2.2 Relative Water Content(RWC)
    2.3 Determination of inorganic ions
    2.4 Determination of proline content
    2.5 Determination of soluble sugar content
    2.6 Statistical Analysis
3. RESULTS
    3.1 Effect of NaCl and NaHCO₃ on relative water content of Titicaca and Painbon
    3.2 Effect of NaCl and NaHCO₃ on Na⁺content in leaves,shoot and root of Titicaca
    3.3 Effect of NaCl and NaHCO₃ on Na⁺content in leaves,shoot and root of Painbon
    3.4 Effect of NaCl and NaHCO₃ on K⁺content in leaves,shoot and root of Titicaca
    3.5 Effect of NaCl and NaHCO₃ on K⁺content in leaves,shoot and root of Painbon
    3.6 Effect of NaCl on Cl^-and NO3
- content in leaves,shoot and root of Titicaca
    3.7 Effect of NaCl on H₂PO4
- and SO4
2-content in leaves,shoot and root of Titicaca
    3.8 Effect of NaHCO₃ on Cl^-and NO3
- content in leaves,shoot and root of Titicaca
    3.9 Effect of NaHCO₃ on H₂PO4
-and SO4
2- content in leaves,shoot and root of Titicaca.
    3.10 Effect of NaCl on Cl^-and NO3
-content in leaves,shoot and root of Painbon
    3.11 Effect of NaCl on H₂PO4
-and SO4
2-content in leaves,shoot and root of Painbon
    3.12 Effect of NaHCO₃ on Cl^-and NO3
-content in leaves,shoot and root of Painbon
    3.13 Effect of NaHCO₃ on H₂PO4
-and SO4
2-content in leaves,shoot and root of Painbon
    3.14 Effect of NaCl and NaHCO₃ on proline content in leaves of Titicaca and Painbon
    3.15 Effect of NaCl and NaHCO₃ on soluble sugar content in leaves of Titicaca and Painbon
4. DISCUSSION
5. CONCLUSION
REFERENCES
ACKNOWLEDGEMENTS



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