Effect of Water Stress Abscisic Acid and Proline on Cotton Plants

Effect of Water Stress, Abscisic Acid and Proline on Cotton Plants

Project / Seminar Material
Reference ID: PS-6113-TM

DEDICATION

This research material titled “Effect of Water Stress, Abscisic Acid and Proline on Cotton Plants” is dedicated to God for his enabling grace, and to all computer enthusiasts who contributed to make life a pleasant experience during my research documentation.

ACKNOWLEDGEMENT

I extend my sincere gratitude to all those who contributed to the completion of this project. Special thanks to my Supervisor (Name of your Supervisor), the Head of Department (Name of your HOD), the Lecturers in the department of Agricultural Engineering (AE), Book Authors and Profound Scholars of existing or related project material on “Effect of Water Stress, Abscisic Acid and Proline on Cotton Plants” for their invaluable guidance, support, and expertise throughout the journey.

I am also grateful to your study area (mention any funding organizations, if applicable) for their financial assistance. This research would not have been possible without the encouragement and assistance of some stakeholders (mention any mentors, teachers, or colleagues). Additionally, I would like to acknowledge the understanding and patience of my family and friends during this endeavor. Your unwavering support has been a constant source of motivation. Thank you all for being part of this meaningful endeavor.

ABSTRACT

The effects of matric water potential (Ψm), proline (P) and abscisic acid (ABA) on cotton plants were studied. The characteristics examined included the stability of leaf membranes, chlorophyll content, chlorophyll stability index, leaf relative water content and dry matter content. Membrane stability was assessed by determining leakage of electrolytes from leaf discs exposed to heat and dehydration stress. The membrane of water-stressed plants was less stable than unstressed plants. Discs taken from water-stressed plants at (Ψm) =−0·5 and −1·5 MPa leaked more under heat stress than those taken from unstressed plants.

The reverse was true under dehydration stress. Decreasing (Ψm) reduced chlorophyll a and chlorophyll b content and stability to heat, leaf relative water content and dry matter accumulation. Proline either alone, or in combination with ABA, significantly enhanced chlorophyll content, as well as the chlorophyll stability index, leaf relative water content and dry matter accumulation especially at low water potentials. Leaf relative water content was significantly higher in ABA-treated plants at higher stress level. The results proved that spraying cotton plants grown under conditions of low soil water potential with ABA and proline solutions counteracted the effects of stress especially at moderate and high stresses.


Effect of Water Stress, Abscisic Acid and Proline on Cotton Plants

CHAPTER ONE

1.1 Introduction

… As a prelude to other parts of this study, this chapter will discuss the background upon which this study was initiated, the statement of problems that led to this study, the Aim and Objectives of the study. Others are Significance of the study, Scope of work, Research hypothesis and questions, Limitation of the study and Definition of technical terms.

CHAPTER TWO

2.0 Literature Review

2.1 Introduction

This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the …

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