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Authors: Patel, Sanket V.
Advisor: Sharma, Hemant
Language: en
Type: Thesis
Pages: 94
Agrotags: null
Abstract: Mango (Mangifera indica L.) is an important fruit crop of India and other sub-tropical and tropical countries of the world. Mango fruit is one of the most popular, nutritionally rich fruits with unique flavor, fragrance, taste, and health promoting qualities, making it number one among new functional foods, often labeled as “super fruits". In pre & post-harvest condition, several diseases are found on the mango which reduces the yield, decreases marketability and shelf life after harvest of the fruits. The wide spread use of pesticides in agriculture are detrimental for the environment and produce considerable damage to ecosystems. Widely used fungicides have led to increased activity in the development of biological control against plant pathogens. Hence, the present investigation on the biological control of mango diseases was carried out. In in vivo condition, the efficacy of banana pseudostem sap and biocontrol agent (P. fluorescens) on the disease severity of anthracnose, powdery mildew and grey blight of mango while in vitro condition to test out the mycelial growth and percent growth inhibition of post-harvest pathogens by bio-control agents and phytoextracts through dual culture and poisoned food techniques. Mango crop suffers from a number of diseases at various stages of its development. Among them anthracnose, powdery, grey blight, stem end rot, rhizophus rot and aspergillus rot on mango fruits are having of great importance and causes huge economic losses. In the present study, the causal organisms of different diseases were isolated from diseased mango parts by following standard tissue isolation method. The morphological and cultural characteristics of isolated fungus were also studied. The effect of banana pseudostem sap and P. fluorescens were tested against mango diseases in in vivo condition and found that spraying and drenching of banana pseudostem sap @ 2.0 % and 15%, respectively reduce the per cent disease intensity of anthracnose and powdery mildew as compared with control and increase the average yield of mango. In biochemical parameter significantly highest phenol content was also observed in this treatment. Biological control is an effective, eco-friendly and alternative approach for any disease management practice. In the present investigation, three fungal and two bacterial biocontrol agents were evaluated against various mango pathogens and were found significantly superior in inhibiting the mycelial growth of the pathogen over control. Different phytoextracts and banana pseudostem sap with suitable control were also screened by poisoned food technique in vitro to know their inhibitory effect on the growth of post-harvest pathogens and observed that banana pseudostem sap, Babool and Neem gave lowest mycelial growth of test pathogens
Subject: Plant Pathology
Theme: M.Sc. Thesis
These Type: M.Sc
Issue Date: 2017-06
Appears in Collections:Master Degree Theses

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