Aetiology of the fungal rot of cucumber fruit (cucumis sativus l.) and the efficacy of its control with phytochemicals from crude extracts of two plants

 

Table Of Contents


Chapter ONE

INTRODUCTION

  • 1.1Introduction
  • 1.2Background of Study
  • 1.3Problem Statement
  • 1.4Objectives of Study
  • 1.5Limitation of Study
  • 1.6Scope of Study
  • 1.7Significance of Study
  • 1.8Structure of the Research
  • 1.9Definition of Terms

Chapter TWO

LITERATURE REVIEW

  • 2.1Overview of Fungal Rot in Cucumber Fruit
  • 2.2Phytopathology of Cucumber Fruit Rot
  • 2.3Previous Studies on Fungal Diseases in Cucumbers
  • 2.4Phytochemicals and Their Role in Disease Control
  • 2.5Plant Extracts for Disease Management
  • 2.6Efficacy of Phytochemicals from Plant Extracts
  • 2.7Comparative Analysis of Plant Extracts for Disease Control
  • 2.8Mechanisms of Action of Phytochemicals on Fungal Pathogens
  • 2.9Challenges in Implementing Phytochemical Control Methods
  • 2.10Future Research Directions in Phytochemical Control of Fungal Rot

Chapter THREE

RESEARCH METHODOLOGY

  • 3.1Research Design and Rationale
  • 3.2Selection of Plant Species for Phytochemical Extraction
  • 3.3Experimental Setup for Phytochemical Extraction
  • 3.4In vitro Testing of Plant Extracts on Fungal Pathogens
  • 3.5Data Collection and Analysis Methods
  • 3.6Statistical Tools for Data Interpretation
  • 3.7Ethical Considerations in Research Methodology
  • 3.8Validation of Results and Experimental Reproducibility

Chapter FOUR

DATA PRESENTATION AND ANALYSIS

  • 4.1Analysis of Phytochemical Composition in Plant Extracts
  • 4.2Antifungal Activity of Plant Extracts on Cucumber Fruit Rot
  • 4.3Comparative Efficacy of Plant Extracts in Disease Control
  • 4.4Impact of Phytochemical Concentration on Antifungal Activity
  • 4.5Synergistic Effects of Plant Extract Combinations
  • 4.6Mechanistic Insights into Phytochemical-Fungal Interactions
  • 4.7Field Application of Plant Extracts for Disease Management
  • 4.8Long-Term Effects and Sustainability of Phytochemical Control Methods

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • 5.1Summary of Research Findings
  • 5.2Conclusions and Implications
  • 5.3Recommendations for Future Research
  • 5.4Contribution to Knowledge in Fungal Disease Control
  • 5.5Practical Applications and Implementation Strategies

Project Abstract

<p> The aetiology of the fungal rot of cucumber fruit (Cucumis sativus L.) in Enugu State was investigated. Five fungal pathogens were isolated from diseased cucumber fruits. They were identified as Fusarium oxysporum Schlecht, Aspergillus niger Van Tiegh, Rhizopus stolonifer Ehrenb. ex.Fr, Geotrichum candidum Link and Mucor micheli ex Staint – Amans. The pathogenicity tests proved them as the causal agents of the rot. The effects of ethanolic extracts of Chromolaena odorata and Moringa oleifera and benlate solution on the isolates wegre also determined. The ethanolic extracts of the test plants inhibited mycelial growth of the pathogens in vitro as well as in vivo. The inhibitory effects of the extracts increased with increase in concentration. All concentrations of 20 mg/ml to 100 mg/ml reduced the mycelial growth of the pathogens to some significant (P &gt; 0.05) level. Benlate solution also reduced the mycelial growth of the pathogens. Phytochemical analysis of C. odorata revealed the presence of tannins, saponins, phenols, flavonoids, terpenoids, glycosides and alkaloids while M. oleifera contained all the phytochemicals except alkaloids. The presence of these active ingredients in the extracts may have contributed to their inhibitory properties. These findings suggest that plant extracts could serve as potential sources of bio-fungicides. <br></p>

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