Indian Journal of Science and Technology
Year: 2019, Volume: 12, Issue: 7, Pages: 1-12
Shehbaz Jawed1, Hua-Feng Wang2, Xia-Lan Cheng2, Anum Mehmood2, Arif Hussain Kaleri2, Zaheer Ahmed Jatoi2, Asif Ali Kaleri3, Aftab Ali Kubar2 and Mir Muhammad Nizamani2*
1Department of Plant Pathology Faculty of Crop Protection, Sindh Agriculture University Tando Jam, Pakistan; [email protected]
2Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China; [email protected], [email protected], [email protected],
[email protected], [email protected], [email protected], [email protected]
3Department of Agronomy Faculty of Crop Protection, Sindh Agriculture University Tando Jam, Pakistan; [email protected]
*Author for correspondence
Mir Muhammad Nizamani
Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China. Email: [email protected]
Objectives: To study the prevalence of potato dry rot in different vegetables markets. To evaluate the effect of Fusarium oxysporum on potato. To study the efficacy of different antagonistic agents and fungicides against mycelia growth of F. oxysporum. Methods/Statistical Analysis: Survey was done from different vegetable markets of Pakistan. Potatoes showing dry rot symptoms were collected and brought to Plant Pathology laboratory. Findings: Antagonistic organisms cause highly significant inhibition in the growth of F. oxysporum which was higher than 60%. Lowest growth of F. oxysporum was found because of an interaction of P. varioti (15.5 mm) and Paecilomyces lilacinus (16.75 mm). Both them cause 82.39% and 80.96% inhibition in the growth of targeted pathogen respectively. Whereas in case of interaction with T. harzianum and Trichoderma polysporum the growth of F. oxysporum was 22.00 mm and 27.75 mm, which is still significantly low as compared to the growth of F. oxysporum 88.00 mm in separate control plates. The growth of pathogen was inhibited by Paecilomyces spp. and mutual inhibition of both antagonist and pathogen at few mm was observed. Whereas, in the case of Trichoderma spp. pathogen and antagonist produce intermingled growth, the growth of the F. oxysporum was ceased and overgrown by antagonist. In-vitro amendment of fungicide in culture media inhibits the colony growth of F. oxysporum. Reduction in colony diameter of F. oxysporum was observed with the application of used antagonistic fungi. Application/ Improvements: These results can be used in the analysis and bio-control methods of Potato dry rot.
Keywords: Bio-Control, Dry Rot, Fungicides, Fusarium oxysporum, Potato
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