Dilution Strategy for Saline Irrigation Based on Physiologic

发布时间：2021-10-12 09:20

　　盐胁迫是限制农业生产的主要因素之一,也是影响全世界作物产量的最重要的环境因子。相反,当今的作物产量并不能满足人们的需求。为了确保盐分影响区域的农业可持续发展以及作物产量不断提高,克服水分亏缺以及盐胁迫是最为重要的问题。因此,本论文选取诸葛菜和油菜为材料,通过研究其光合作用,水分利用效率,水势,碳酸酐酶活性,生理电容和叶片紧张度来对比分析其耐盐能力。结论如下:1)研究诸葛菜和油菜的盐诱导效应和后期再复水的生理特性;2)基于盐胁迫和再复水的生长和生理响应探索最优的复水机制;3)基于诸葛菜和油菜的电生理特性建立一种预测稀释盐水机制的模型。在温室内种植油菜和诸葛菜。用NaCl、Na2SO4和两者的混合来对油菜和诸葛菜分别进行处理;把NaCl 和 Na2SO4 的浓度分别设置为（NC1: 2.5, NC2: 5, NC3: 10） g L-1 （NS1: 2.5, NS2: 5, NS3:10）g L-1 以及将不同浓度的两种盐进行混合得到混合盐溶液（MS1: 2.5 NaCl + 10 Na2SO4;MS2: 10 NaCl + 2.5 Na2SO4; MS3: 5 NaCl + 5 Na2S... 

【文章来源】：江苏大学江苏省

【文章页数】：210 页

【学位级别】：博士

【文章目录】：
ACKNOWLEDGEMENT
DEDICATION
ABSTRACT
摘要
ABBREVIATIONS
CHAPTER 1 INTRODUCTION
    1.1 Research Background and Consequences
    1.2 Problem statement
    1.3 Need of Study and Motivation
    1.4 Relation between our Research work and Agricultural Water Soil Engineering
    1.5 Outline of the Dissertation
    1.6 Objectives of the Research
CHAPTER 2 LITERATURE REVIEW
    2.1 Scarcity of fresh water, Saline irrigation & Salinity
    2.2 Irrigation management under water scarcity condition
    2.3 Physiological Responses of Plants to Salt Stresses
        2.3.1 Photosynthetic characteristics
        2.3.2 Leaf water potential and carbonic anhydrase activity
        2.3.3 Electrophysiological Properties
    2.4 Plant growth features
    2.5 Effects of Re-watering on the Physiology of Plants
        2.5.1 Recovery of physiological parameters by re-watering
        2.5.2 Dilution of salted water
        2.5.3 Re-watering conditions and its application
CHAPTER 3 SALT-INDUCED EFFECTS ON GROWTH AND PHOTOSYNTHETIC TRAITS OF BRASSICA NAPUS AND ITS RESTORATION THROUGH RE-WATERING
    3.1 Introduction
    3.2 Materials and Methods
        3.2.1 Plant material
        3.2.2 Determination of physiological characteristics
        3.2.3 Determination of growth parameters
        3.2.4 Determination of CA activity
        3.2.5 Calculation of re-watering use efficiency
        3.2.6 Statistical analysis
    3.3 Results
        3.3.1 Photosynthetic traits in salt stress vs salt stress subsequently re-watering
            3.3.1.1 Net Photosynthetic rate & stomatal conductance
            3.3.1.2 Transpiration
        3.3.2 CA activity and water potential in salt stress and subsequently in re-watering
        3.3.3 Effect of salt stress on plant growth
        3.3.4 Water use efficiency & re-watering water-use efficiency
        3.3.5 Relationship between P_N,Gs,WUE,Ψ and CA activity
    3.4 Discussion
        3.4.1 Photosynthetic response traits & Growth
        3.4.2 Re-watering effects
    3.5 Conclusions
CHAPTER 4 SALT-INDUCED EFFECTS ON GROWTH AND PHOTOSYNTHETIC TRAITS OF ORYCHOPHRAGMUS VIOLACEUS AND ITS RESTORATIONTHROUGH RE-WATERING
    4.1 Introduction
    4.2 Materials and Methods
        4.2.1 Experiment site, treatments and growth conditions
        4.2.2 Photosynthetic rate, stomata conductance,transpiration rate measurements and Leafwater potential measurements
        4.2.3 Determination of growth parameters
        4.2.4 Measurement of carbonic anhydrase activity and Determination of re-watering useefficiency
        4.2.5 Statistical analysis
    4.3 Results
        4.3.1 Net photosynthetic response in salt stressed plants in comparison with re-watered plants
            4.3.1.1 Net photosynthetic rate (P_N)
            4.3.1.2 Stomatal conductance
            4.3.1.3 Transpiration (TR) of O violaceus
        4.3.2 Effect of salt stress on plant growth features
        4.3.3 Effects of salts stresses and subsequently re-watering on CA activity & water potential
        4.3.4 Water use efficiency & re-watering water-use efficiency
    4.4 Discussion
        4.4.1 Effect of salts stress on growth and photosynthetic traits
        4.4.2 Re-watering influence on the development of growth and physiological parameters
    4.5 Conclusions
CHAPTER 5 DETERIMINATION OF PLANTS GROWTH RECOVERY UNDER SALT-STRESS FOLLOWING BY RE-WATERING BASED ON ELECTROPHYSIOLOGICAL CHRACTERISTICS
    5.1 Introduction
    5.2 Materials and Methods
        5.2.1 Experimental conditions
        5.2.2 Salt treatments
        5.2.3 Re-watering orders
        5.2.4 Determination of growth parameters
        5.2.5 Determination of leaf water potential and leaf water content
        5.2.6 Determination of leaf tensity
        5.2.7 Statistical analysis
    5.3 Results
        5.3.1 Effect of salt stress and re-watering on plant growth
        5.3.2 Water content and water potential
        5.3.3 Physiological capacitance and leaf tensity
    5.4 Discussion
        5.4.1 Effect of salt-stress on growth and electrophysiological properties
        5.4.2 Restoration of O violaceus and B.napus through re-watering
    5.5 Conclusions
CHAPTER 6 STRATEGY FOR DILUTION OF SALTED WATER BASED ONELECTROPHYSIOLOGICAL PROPERTIES OF PLANTS
    6.1 Introduction
    6.2 Materials and Methods
        6.2.1 Experimental conditions, Salt treatments and Re-watering orders
        6.2.2 Determination of leaf tensity
        6.2.3 Model construction for prediction of re-watering levels
        6.2.4 Principle of model construction
        6.2.5 Statistical analysis
    6.3 Results
        6.3.1 Model construction Relationship between salt concentrations, physiological capacitanceand leaf tensity
        6.3.2 Dilute irrigation points of B napus and O violaceus by using C_P and L_T equation
    6.4 Discussion
        6.4.1 Re-watering or dilution point
        6.4.2 Predicted dilution regime for best production of plants
    6.5 Conclusions
CHAPTER 7 GENERAL CONCLUSIONS,RECOMMENDATIONS,INNOVATION ANDFUTURE ASPECTS
    7.1 General Conclusions
    7.2 Implementation of our Research work in the field of Agricultural Water Soil Engineering
    7.3 Recommendations
    7.4 Innovations
    7.5 Future perspective
REFRENCES
PUBLICATION
Patent
Appendix 1: Hoagland nutrient solution
Appendix 2: Seedling of B napus and O violaceus in growth chamber
Appendix 3: Effect of salt stress followed by re-watering on growth development of B napus and O.violaceus
Appendix 4: Relationship between salt concentration, physiological capacitance and leaf tensity of O.violaceus
Appendix 5: Relationship between salt concentration, physiological capacitance and leaf tensity of B.napus


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