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http://krishi.icar.gov.in/jspui/handle/123456789/33720| Title: | In-Vitro Evaluation of Native Isolates of Trichoderma asperellum Against Fusarium oxysporum f. sp. gladioli Causing Fusarium Wilt of Gladiolus |
| Authors: | Nitika Gupta, Prabha K., G.B. Kadam, T.N. Saha, Shilpashree K.G. and K.V. Prasad |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::Directorate of Floricultural Research |
| Published/ Complete Date: | 2020-01-20 |
| Project Code: | Not Available |
| Keywords: | In-Vitro Evaluation, Trichoderma asperellum, Biocontrol agents |
| Publisher: | IPS, NEW DELHI |
| Citation: | Not Available |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Gladiolus (Gladiolus grandiflorus Ness) the “queen of bulbous flowers”, is an important commercial flower crop fetching high returns in national and international markets. Fusarium oxysporum f. sp. gladioli causes corm rot, wilt and yellows in gladiolus. Fusarium wilt is a major constraint to flower industry with respect to quality and yield. Use of fungicides for the management of Fusarium wilt has been found to be inconsistent. Application of biocontrol agents constitutes an effective option for the management of Fusarium wilt. The present study was carried out to analyze the efficacy of Trichoderma asperellum against Fusarium wilt. Three Trichoderma asperellum isolates i.e, Pune (Ac no. MK041249), Vadaj (Ac no. MN372214) and Kusur (Ac no. MN386231) which were isolated from rhizospheric soil of gladiolus from Pune region, were tested in vitro for their efficacy against Fusarium wilt pathogen of gladiolus. Isolates of Trichoderma asperellum were found effective and will be further evaluated in vivo. The biocontrol mechanism studies revealed that selected Trichoderma isolates possessed good competitive saprophytic ability. The isolate Trichoderma asperellum “Pune” was found to be the best as 72% inhibition was found through volatile compounds. Besides isolate Trichoderma asperellum “Vadaj” possessed strong mycoparasitic ability against Fusarium oxysporum f. sp. gladioli i.e, 75% inhibition was found in dual culture assay. The biocontrol activity involving mycoparasitism, antibiotics and competition for nutrients, also induces defence responses or systemic resistance responses in plants. Biocontrol agents should not be considered as an independent tool, but should be adequately implemented in an integrated management framework. The promising isolates of Trichoderma asperellum will be further evaluated in vivo for incorporation in integrated wilt management in gladiolus. |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Proceedings |
| Sponsors: | ICAR |
| Language: | English |
| Name of Journal: | IPS, NEW DELHI |
| Volume No.: | Not Available |
| Page Number: | Not Available |
| Name of the Division/Regional Station: | Plant Pathology, Floriculture |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/33720 |
| Appears in Collections: | HS-DFR-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IPSCONF2020.pdf | 286.49 kB | Adobe PDF | View/Open |
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