Role of Chitosan in Induction of Defense Response against Phomopsis Vexans and Augmentation of Growth and Yield of Eggplant

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Dr. Rayhanur Jannat
Dr. Rayhanur Jannat
2
Milon Saha
Milon Saha
3
M. Tanbir Rubayet
M. Tanbir Rubayet
4
Salma Sultana
Salma Sultana

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GJSFR Volume 18 Issue C3

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Phomopsis blight and fruit rot disease caused by the fungus Phomopsis vexans is one of the most devastating diseases of eggplant that causes great economic losses especially in tropical and subtropical climates. An experiment was conducted to evaluate the antifungal properties of chitosan against P. vexans by inducing defense-related enzymes and increase the growth and yield contributing characters of eggplant. P. vexans isolate VS-2 was identified as most virulent against eggplant by pathogenicity test. The concentrations of chitosan 0, 0.1, 0.2, 0.3, 0.4 and 0.5% were used to control the fungus in in-vitro trial. There was an effect on mycelial growth reduction of P. vexans by chitosan. The highest mycelial growth reduction was found with 0.5% chitosan at seven days after incubation. Consequently, seeds were treated with chitosan @ 0.5% concentration. Chitosan enhanced the germination percentage and seedling growth such as shoot length, root length, fresh weight and dry weight and reduced post-emergence seedling mortality.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Dr. Rayhanur Jannat. 2018. \u201cRole of Chitosan in Induction of Defense Response against Phomopsis Vexans and Augmentation of Growth and Yield of Eggplant\u201d. Global Journal of Science Frontier Research - C: Biological Science GJSFR-C Volume 18 (GJSFR Volume 18 Issue C3): .

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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-C Classification: FOR Code: 060799
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v1.2

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August 4, 2018

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English

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Phomopsis blight and fruit rot disease caused by the fungus Phomopsis vexans is one of the most devastating diseases of eggplant that causes great economic losses especially in tropical and subtropical climates. An experiment was conducted to evaluate the antifungal properties of chitosan against P. vexans by inducing defense-related enzymes and increase the growth and yield contributing characters of eggplant. P. vexans isolate VS-2 was identified as most virulent against eggplant by pathogenicity test. The concentrations of chitosan 0, 0.1, 0.2, 0.3, 0.4 and 0.5% were used to control the fungus in in-vitro trial. There was an effect on mycelial growth reduction of P. vexans by chitosan. The highest mycelial growth reduction was found with 0.5% chitosan at seven days after incubation. Consequently, seeds were treated with chitosan @ 0.5% concentration. Chitosan enhanced the germination percentage and seedling growth such as shoot length, root length, fresh weight and dry weight and reduced post-emergence seedling mortality.

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Role of Chitosan in Induction of Defense Response against Phomopsis Vexans and Augmentation of Growth and Yield of Eggplant

Dr. Rayhanur Jannat
Dr. Rayhanur Jannat
Milon Saha
Milon Saha
M. Tanbir Rubayet
M. Tanbir Rubayet
Salma Sultana
Salma Sultana

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