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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/67948
Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Balaji C.G. and R.Viswantahan | en_US |
dc.date.accessioned | 2021-11-29T03:40:17Z | - |
dc.date.available | 2021-11-29T03:40:17Z | - |
dc.date.issued | 2018-09-18 | - |
dc.identifier.citation | Not Available | en_US |
dc.identifier.isbn | 978-93-85267-12-3 | - |
dc.identifier.other | International Symposium onSugarcane Research Since Co 205: 100 Years and Beyond (SucroSym-2017) | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/67948 | - |
dc.description | Not Available | en_US |
dc.description.abstract | Detailed studies on the simulation of wilt under controlled conditions revealed that sick soil inoculum played more crucial role in initiating the wilt as compared to the sett-borne inoculum at early crop stage. A detached leaf assay was used to screen the F. sacchari isolates for variation in their pathogenicity. In the leaf bioassay, the fungal inoculum caused a necrotic lesion on the leaves. Microscopic observation of Fusarium inoculated leaves revealed that the fungal conidia were able to germinate and form primary mycelium and hyphal colonization. Based on this assay it was found that the isolates which produced severe necrotic lesions possess high levels of virulence and ideal for disease simulation studies. Pathogenicity studies were carried out by artificial inoculation of wilt pathogen by plug method. Six varieties were inoculated with five pathogenic Fusarium cultures, subjected to normal irrigation and drought conditions after the inoculation. The inoculated canes exhibited yellowing of leaves and leaf drying. Internally, vascular brown streaks and internodal discoloration or pith cavities were observed. It was found that in the drought imposed plots, the canes were more prone to wilt as compared to the normal irrigated plots. Transmission of vascular streaks crossing 1-3 nodes both up and down from the inoculated internode was observed in drought induced plots. Some cultivars like Co 86002 showed only partial wilt symptoms in both the plots with all the F. sacchari isolates. The observation revealed that sugarcane varieties exhibited a differential reaction to F. sacchari isolates. Wilt induced canes were subjected to pathogen re-isolation, characterization to confirm the F. sacchari. The study on pathogenicity indicated that, once the pathogen enters into the cane by different sources of inocula, it causes wilt in the crop. Under favorable environmental conditions like drought or other stresses, the pathogen causes severe symptoms. Although the disease could not be reproduced earlier by several workers, we have clearly found that, plug method of inoculation to induce the disease in the field by imposing abiotic stresses to the crop. This study conducted at SBI has given new understanding on wilt disease spread, F. sacchari characterization, variability and pathogenicity. Further research works are required to validate the new screening technique to assess F. sacchari pathogenicity and reproduction of the disease at different locations. | en_US |
dc.description.sponsorship | Not Available | en_US |
dc.language.iso | English | en_US |
dc.publisher | ICAR - Sugarcane Breeding Institute , Coimbatore | en_US |
dc.relation.ispartofseries | Not Available; | - |
dc.subject | F. sacchari, leaf assay , Microscopic observation , Pathogenicity | en_US |
dc.title | Sugarcane Wilt: Understanding of Diseases, Variability, Characterization and Pathogen Simulation By natural and artificial methods | en_US |
dc.title.alternative | Not Available | en_US |
dc.type | Proceedings | en_US |
dc.publication.projectcode | Not Available | en_US |
dc.publication.journalname | Not Available | en_US |
dc.publication.volumeno | Not Available | en_US |
dc.publication.pagenumber | 413-415 | en_US |
dc.publication.divisionUnit | Division of crop protection | en_US |
dc.publication.sourceUrl | Not Available | en_US |
dc.publication.authorAffiliation | ICAR::Sugarcane Breeding Institute | en_US |
dc.ICARdataUseLicence | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf | en_US |
Appears in Collections: | CS-SBI-Publication |
Files in This Item:
File | Description | Size | Format | |
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SucroSym-2017.pdf | 484.41 kB | Adobe PDF | View/Open |
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