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Studies on Chilli Leaf Curl Complex Disease

KrishiKosh

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Title Studies on Chilli Leaf Curl Complex Disease
 
Creator S.G.Raju
 
Contributor M.S.Patil
 
Subject Plant Pathology
 
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.
 
Date 2016-07-23T11:59:46Z
2016-07-23T11:59:46Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69527
 
Format application/pdf
 
Publisher UAS Dharwad