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Environmental Factors Affecting Growth of Pathogenic Fungi Causing Fruit Rot in Tomato (Lycopersicon Esculentum)


Environmental Factors Affecting Growth of Pathogenic Fungi Causing Fruit Rot in Tomato (Lycopersicon Esculentum)
Authors : Nowsheen Hassan, Shafiq-ur- Rehman, Haleema Bano
Publication Date: 28-02-2017

Authors

Author(s):  Nowsheen Hassan, Shafiq-ur- Rehman, Haleema Bano

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 01 , February - 2017

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV6IS020357

Abstract

Effect of different temperature ranges, pH levels and light intensity were tested against the growth of Rhizopus stolonifer (Ehrenberg ex. Fr.) Lind, Aspergillus niger Van Teighem, Alternaria alternata (Fr.) Keissler, Fusarium oxysporum f. sp. lycopersici (Sacc.) W.C. Snyder and H.N. Hans, and Phytophthora nicotianae Breda de Haan under in vitro conditions which were isolated from the tomato samples brought from various locations. The temperature of 25 °C was best for the growth of Rhizopus stolonifer, Alternaria alternata, Fusarium oxysporum f. sp. lycopersici and Phytophthora nicotianae while as the temperature of 35 °C was best for the growth of Aspergillus niger. Maximum growth of Rhizopus stolonifer, Aspergillus niger, Alternaria alternata was obtained when exposed to alternating light and alternating dark. Fusarium oxysporum f. sp. lycopersici recorded maximum growth when exposed to dark. Maximum growth of Phytophthora nicotianae was observed at twelve hours light. The pH 5.5 was best for the growth of Rhizopus stolonifer, Aspergillus niger and the pH 6.5 was best for the growth of Alternaria alternata and Phytophthora nicotianae while as the pH 7.0 was best for the growth of Fusarium oxysporum f. sp. lycopersici.

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