水分胁迫和根瘤菌对豇豆农艺性状的影响及其生理机制
发布时间：2021-04-29 04:57
全球气候变化、干旱胁迫的增加以及植物在不同生长阶段遭受多种非生物胁迫,都可能导致作物产量的下降。在豆科植物中,干旱胁迫不仅会影响它们的生长,还会影响它们与根瘤菌的共生。然而,土壤水分状况对接种根瘤菌的豇豆的生理反应和水分利用效率（WUE）的影响还不明确。干旱锻炼对后期干旱胁迫的影响已经在一些作物品种中得到了研究。但是,干旱锻炼及对后期不同水分胁迫的响应机理还需要在豇豆中进一步研究。因此,了解豇豆耐旱机制对维持豇豆或维持粮食产量和生产力具有重要意义。本研究的目的是:（i）研究水分胁迫和根瘤菌接种对叶片气体交换,植物水分关系,水分利用效率以及碳氧同位素组成(δ13C,δ18O)的影响,（ii）确定豇豆早期生长期干旱锻炼的生理反应,干旱信号和生长后期对干旱胁迫响应以及对WUE的影响机制。盆栽试验于2017年和2018年在中国农业科学院（CAAS）的温控玻璃温室进行。为了研究水分胁迫和根瘤菌接种对叶片气体交换,植物水分关系,水分利用效率以及碳氧同位素组成(δ13C,δ18O)的影响,在三种不同土壤水分条件下...
【文章来源】：中国农业科学院北京市
【文章页数】：97 页
【学位级别】：博士
【文章目录】：
摘要
abstract
CHAPTER1:GENERAL INTRODUCTION
1.1 INTRODUCTION
1.2 HYPOTHESIS
1.3 AIM OF THE STUDY
1.4 SPECIFIC OBJECTIVES
1.5 SCOPE AND OUTLINE OF THE THESIS
CHAPTER2:LITERATURE REVIEW
2.1 COWPEA:ORIGIN,DOMESTICATION AND DISTRIBUTION
2.2 DESCRIPTION,CLASSIFICATION AND IMPORTANCE
2.3 ENVIRONMENTAL REQUIREMENTS AND COWPEA PRODUCTION
2.4 BIOLOGICAL NITROGEN FIXATION IN LEGUMES SYSTEM
2.4.1 Populations of rhizobia
2.4.2 Inoculation of cowpea with rhizobium strains
2.5 BIOTIC AND ABIOTIC CONSTRAINTS FOR COWPEA PRODUCTION
2.5.1 Biotic stress
2.5.2 Abiotic stress constraints
2.6 ADAPTATION TO DROUGHT STRESS IN COWPEA
2.6.1 Drought escape in cowpea
2.6.2 Drought avoidance and tolerance in cowpea
2.7 BREEDING FOR DROUGHT TOLERANCE IN COWPEA
2.8 MORPHOLOGICAL,PHYSIOLOGICAL AND BIOCHEMICAL INDICATORS FOR DROUGHT TOLERANCE IN COWPEA
2.9 WATER USE EFFICIENCY(WUE)
2.10 CARBON AND OXYGEN ISOTOPIC COMPOSITION
2.11 ROLES OF HORMONES REGULATING PHYSIOLOGICAL RESPONSES TO DROUGHT STRESS
2.11.1 Abscisic Acid(ABA)
2.11.2 Auxins
2.11.3 Cytokinins
2.11.4 Gibberellins
2.12 DROUGHT STRESS MEMORY
2.13 DROUGHT PRIMING
CHAPTER3:LEAF GAS EXCHANGE,PLANT WATER RELATIONS AND WATERUSE EFFICIENCY OF VIGNA UNGUICULATA L.WALP.INOCULATED WITH RHIZOBIA UNDER DIFFERENT SOIL WATER REGIMES
3.1 INTRODUCTION
3.2 MATERIALS AND METHODS
3.2.1 The Growing Conditions and Treatments
3.2.2 Sampling,Measurements and Analysis
3.2.3 Statistical Analysis
3.3 RESULTS
3.3.1 Soil Water Changes
3.3.2 Leaf Gas Exchange
3.3.3 Leaf Area and Root Nodule Number
3.3.4 Plant Water Status and ABA Concentration
3.3.5 Biomass accumulation,plant water use,water use efficiency,plantδ~(13)C andδ~(18)O
3.4 DISCUSSION
3.5 CONCLUSION
CHAPTER4:DROUGHT PRIMING AT EARLY GROWTH STAGE IMPROVED PLANT WATER STATUS,WUE AND PHOTOSYNTHESIS CAPACITY DURING THE SUBSEQUENT DROUGHT STRESS IN COWPEA PLANTS#33
4.1 INTRODUCTION
4.2 MATERIALS AND METHODS
4.2.1 The growing conditions and treatments
4.2.2 Sampling,measurements and analysis
4.2.3 Statistical analysis
4.3 RESULTS
4.3.1 Soil water dynamics
4.3.2 Leaf gas exchange,intrinsic water use efficiency and chlorophyll content
4.3.3 Plant growth
4.3.4 Plant water status
4.3.5 Plant hormones(ABA,IAA,ZR and GA3)
4.3.6 Biomass production,plant water use,water use efficiency and plantδ13C
4.3.7 Plant N,15N and C accumulation
4.4 DISCUSSIONS
4.5 CONCLUSION
CHAPTER5:GENERAL CONCLUSION AND RECOMMENDATIONS
5.1 CONCLUSION
5.2 RECOMMENDATIONS
REFERENCES
ACKNOWLEGEMENTS
AUTHOR?S RESUME
本文编号：3166884
【文章来源】：中国农业科学院北京市
【文章页数】：97 页
【学位级别】：博士
【文章目录】：
摘要
abstract
CHAPTER1:GENERAL INTRODUCTION
1.1 INTRODUCTION
1.2 HYPOTHESIS
1.3 AIM OF THE STUDY
1.4 SPECIFIC OBJECTIVES
1.5 SCOPE AND OUTLINE OF THE THESIS
CHAPTER2:LITERATURE REVIEW
2.1 COWPEA:ORIGIN,DOMESTICATION AND DISTRIBUTION
2.2 DESCRIPTION,CLASSIFICATION AND IMPORTANCE
2.3 ENVIRONMENTAL REQUIREMENTS AND COWPEA PRODUCTION
2.4 BIOLOGICAL NITROGEN FIXATION IN LEGUMES SYSTEM
2.4.1 Populations of rhizobia
2.4.2 Inoculation of cowpea with rhizobium strains
2.5 BIOTIC AND ABIOTIC CONSTRAINTS FOR COWPEA PRODUCTION
2.5.1 Biotic stress
2.5.2 Abiotic stress constraints
2.6 ADAPTATION TO DROUGHT STRESS IN COWPEA
2.6.1 Drought escape in cowpea
2.6.2 Drought avoidance and tolerance in cowpea
2.7 BREEDING FOR DROUGHT TOLERANCE IN COWPEA
2.8 MORPHOLOGICAL,PHYSIOLOGICAL AND BIOCHEMICAL INDICATORS FOR DROUGHT TOLERANCE IN COWPEA
2.9 WATER USE EFFICIENCY(WUE)
2.10 CARBON AND OXYGEN ISOTOPIC COMPOSITION
2.11 ROLES OF HORMONES REGULATING PHYSIOLOGICAL RESPONSES TO DROUGHT STRESS
2.11.1 Abscisic Acid(ABA)
2.11.2 Auxins
2.11.3 Cytokinins
2.11.4 Gibberellins
2.12 DROUGHT STRESS MEMORY
2.13 DROUGHT PRIMING
CHAPTER3:LEAF GAS EXCHANGE,PLANT WATER RELATIONS AND WATERUSE EFFICIENCY OF VIGNA UNGUICULATA L.WALP.INOCULATED WITH RHIZOBIA UNDER DIFFERENT SOIL WATER REGIMES
3.1 INTRODUCTION
3.2 MATERIALS AND METHODS
3.2.1 The Growing Conditions and Treatments
3.2.2 Sampling,Measurements and Analysis
3.2.3 Statistical Analysis
3.3 RESULTS
3.3.1 Soil Water Changes
3.3.2 Leaf Gas Exchange
3.3.3 Leaf Area and Root Nodule Number
3.3.4 Plant Water Status and ABA Concentration
3.3.5 Biomass accumulation,plant water use,water use efficiency,plantδ~(13)C andδ~(18)O
3.4 DISCUSSION
3.5 CONCLUSION
CHAPTER4:DROUGHT PRIMING AT EARLY GROWTH STAGE IMPROVED PLANT WATER STATUS,WUE AND PHOTOSYNTHESIS CAPACITY DURING THE SUBSEQUENT DROUGHT STRESS IN COWPEA PLANTS#33
4.1 INTRODUCTION
4.2 MATERIALS AND METHODS
4.2.1 The growing conditions and treatments
4.2.2 Sampling,measurements and analysis
4.2.3 Statistical analysis
4.3 RESULTS
4.3.1 Soil water dynamics
4.3.2 Leaf gas exchange,intrinsic water use efficiency and chlorophyll content
4.3.3 Plant growth
4.3.4 Plant water status
4.3.5 Plant hormones(ABA,IAA,ZR and GA3)
4.3.6 Biomass production,plant water use,water use efficiency and plantδ13C
4.3.7 Plant N,15N and C accumulation
4.4 DISCUSSIONS
4.5 CONCLUSION
CHAPTER5:GENERAL CONCLUSION AND RECOMMENDATIONS
5.1 CONCLUSION
5.2 RECOMMENDATIONS
REFERENCES
ACKNOWLEGEMENTS
AUTHOR?S RESUME
本文编号：3166884
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