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. | Blazingprojects Postgraduate Thesis
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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
  • 1.4Objective 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
  • 2.2Causes and Symptoms of Fungal Rot
  • 2.3Importance of Controlling Fungal Rot in Cucumber
  • 2.4Phytochemicals and Their Role in Disease Control
  • 2.5Plant Extracts as Potential Antifungal Agents
  • 2.6Previous Studies on Phytochemical Efficacy
  • 2.7Mechanisms of Action of Phytochemicals
  • 2.8Challenges in Implementing Phytochemical Control
  • 2.9Comparative Analysis of Plant Extract Efficacy
  • 2.10Future Research Directions

Chapter THREE

RESEARCH METHODOLOGY

  • 3.1Research Design and Methodology
  • 3.2Selection of Plant Materials
  • 3.3Extraction and Isolation of Phytochemicals
  • 3.4Antifungal Assays and Experimental Setup
  • 3.5Data Collection and Analysis Methods
  • 3.6Statistical Tools for Data Interpretation
  • 3.7Ethical Considerations in Research
  • 3.8Quality Control Measures

Chapter FOUR

DATA PRESENTATION AND ANALYSIS

  • 4.1Overview of Research Findings
  • 4.2Efficacy of Plant Extracts on Fungal Rot Control
  • 4.3Comparison of Phytochemical Effectiveness
  • 4.4Factors Influencing Phytochemical Activity
  • 4.5Synergistic Effects of Plant Combinations
  • 4.6Practical Implications of Research Findings
  • 4.7Recommendations for Field Application
  • 4.8Areas for Further Investigation

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • 5.1Summary of Research Findings
  • 5.2Conclusions Drawn from the Study
  • 5.3Contributions to Existing Knowledge
  • 5.4Practical Applications and Recommendations
  • 5.5Limitations of the Study
  • 5.6Suggestions for Future Research
  • 5.7Conclusion and Final Remarks

Thesis Abstract

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 > 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.

Thesis Overview

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