This study was conducted to examine the fungi present in spoilt onion bulb. Five different sample of spoilt onion bulb were blended together and suspended in sterilized distilled water which was used to inoculate Sabouraud dextrose agar (SDA). Four different fungi were isolated from the sample and the morphological characteristics shows that the isolate belong to the following genera: Alternaria sp., Aspergillius sp., Penicillium sp., and Rhizopus sp. These fungi may have been responsible for the spoilage of onion bulb sample and therefore the need to store the onion bulb in dry well ventilated stores which will reduce growth and development of fungal pathogens and minimize storage rots. TABLE OF CONTENTS Title i Certification ii Dedication iii Acknowledgement iv Table of contents v Abstract vii CHAPTER ONE 1.0 Introduction 1 1.1 Background of the study 1 1.2 Statement of problem 4 1.3 Significance of the study 5 1.4 Scope of the study 5 1.5 Objective of the study 6 CHAPTER TWO 2.0 Literature review 7 2.1 Description of onions bulbs (Allium cepa) 7 2.2 Scientific classification of onions 10 2.3 Nutritional values of onions 12 2.4 Medicinal uses of onion 13 2.5 Pathogens and pests of onion bulb 15 2.6 Fungi 16 2.7 Mold 18 CHAPTER THREE 3.0 Material and method 21 3.1 Collection of samples 21 3.2 Media preparation 21 3.3 Isolation of rot inducing fungi from the sample 22 3.5 Identification of fungi 22 CHAPTER FOUR 4.0 Results 23 4.1 Isolation and identification of fungi 23 CHAPTER FIVE 5.0 Discussion, conclusion and recommendations 24 5.1 Discussion 24 5.2 Conclusion 25 5.3 Recommendations 26 References 27
ISOLATION OF FUNGI ASSOCIATED WITH ROT ONION BULBS
The toxicity effects of industrial effluents of paint industry (at 0, 5, 10. 20, 40, 60, 80, 100% concentration) were evaluated using macroscopic parameters of onion bulb roots and lettuce seeds. In this study the root length and root numbers were the parameters observed for the onion bulbs and the seed growth, average root length and root... Continue Reading
The toxicity effects of industrial effluents of paint industry (at 0, 5, 10. 20, 40, 60, 80, 100% concentration) were evaluated using macroscopic parameters of onion bulb roots and lettuce seeds. In this study the root length and root numbers were the parameters observed for the onion bulbs and the seed growth, average root length and root... Continue Reading
The toxicity effects of industrial effluents of paint industry (at 0, 5, 10. 20, 40, 60, 80, 100% concentration) were evaluated using macroscopic parameters of onion bulb roots and lettuce seeds. In this study the root length and root numbers were the parameters observed for the onion bulbs and the seed growth, average root length and root... Continue Reading
ABSTRACT The concentration of heavy metals such as Pd, Cd, Cu and Cr were studied using AAS on vegetable samples such as Tomato (fruit and leaf) and Onion bulb. Trace element as Cu showed high concentration. The concentration of heavy metal like Cu ranged from of 0.155 to 0.024mg/kg in tomato fruit; 0.120 to 0.057mg/kg in leafy tomato; 0.118 to... Continue Reading
ABSTRACT The concentration of heavy metals such as Pd, Cd, Cu and Cr were studied using AAS on vegetable samples such as Tomato (fruit and leaf) and Onion bulb. Trace element as Cu showed high concentration. The concentration of heavy metal like Cu ranged from of 0.155 to 0.024mg/kg in tomato fruit; 0.120 to 0.057mg/kg in leafy tomato; 0.118 to... Continue Reading
ABSTRACT The study examined the various fungal pathogens associated with tomatoes spoilage as well as their preliminary taxonomic grouping up to genus level. 25 samples of the spoiled tomatoes were collected from five locations within Gwagwalada area council. Locations include: Passo Village, Gwagwalada market, Phase III, New Kutunku and Dagiri.... Continue Reading
ABSTRACT Fungi spoilage organisms are silently invading acidifying, fermenting, discoloring, and disintegrating microbes that render corn unpalatable and unsafe. Fungi spoilage is caused by two factors, (biotic) living which includes insects, birds, rodents and... Continue Reading
TABLE OF CONTENTS CHAPTER ONE 1.0 Introduction 1.1 Statement of the problem 1.2 Aims/Objective of the Study 1.3 Limitation of the Study 1.4 Significance of the Study CHAPTER TWO 2.0 Literature Review 2.1 Maize as Sweet Corn 2.2 Types of Sugary Corn and Their... Continue Reading
ISOLATION, IDENTIFICATION AND CHARATERIZATION OF FUNGI ASSOCIATED WITH THE SPOILAGE OF CORN ABSTRACT Fungi spoilage organisms are silently invading acidifying, fermenting, discoloring, and disintegrating microbes that render corn (zea mays) unpalatable and unsafe. Fungi spoilage is caused by two factors, (biotic) living which includes insects,... Continue Reading