Studies on Chilli Leaf Curl Complex Disease
KrishiKosh
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Title |
Studies on Chilli Leaf Curl Complex Disease
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Creator |
S.G.Raju
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Contributor |
M.S.Patil
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Subject |
Plant Pathology
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Description |
world. In India, Karnataka is one of the major producers of chilli and grown during both kharif and summer seasons. Leaf curl complex is one of the most important diseases of chilli in northern Karnataka and causes substantial losses every year. The disease is characterized by upward and downward curling, yellowing, puckering and crinkling of leaves and shortening of internodes with partial to complete sterility. Roving survey revealed the occurrence of leaf curl disease in parts of northern Karnataka districts. Chilli leaf curl (ChLCV) and tomato yellow leaf curl virus (TYLVC) specific primers failed to amplify in the infected chilli samples, however, tomato leaf curl virus (ToLCV) specific primers could detect the presence of tomato leaf curl virus. Electron microscopy studies revealed the presence of geminate icosahedral and flexuous rod shaped virus particles in infected chilli sample. Transmission studies revealed that leaf curl complex could be transmitted by mechanical sap inoculation from infected to healthy plants. Among insects, whitefly species Bemisia tabaci were able to transmit the ToLCV from diseased to healthy seedlings. The leaves of severely infected Byadagi dabbi were analyzed for histopathological and histochemical changes. The histochemical studies revealed that the polysaccharides and proteins were highly reduced with increased nucleic acids in infected leaves. Studies on management aspects showed that the crop could be protected from disease incidence by spraying of insecticides i.e., confider and vertimec at 15 and 45 days after transplanting which reduced vector population thereby there was low disease incidence. During 2002-03, sixty four and during 2004-05, fourty four genotypes were tested against leaf curl complex. The results revealed that Arka Lohit, KDSC-510-10, CO-1, Paprika, Paprika-1, Phole-5, GPC-69, GPC-80 and KDC-1 were found to be moderately resistant to resistant. |
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Date |
2016-07-23T11:59:46Z
2016-07-23T11:59:46Z 2010 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/69527
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Format |
application/pdf
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Publisher |
UAS Dharwad
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