EPIDEMIOLOGY AND MANAGEMENT OF MOSAIC OF CUCUMBER

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dc.contributor.advisorSingh, Ranbir
dc.contributor.authorChoskit, Dechan
dc.date.accessioned2021-12-01T08:14:02Z
dc.date.available2021-12-01T08:14:02Z
dc.date.issued2021-11
dc.description.abstractCucumber (Cucumis sativus L.) is one of the most important vegetable crops of the family Cucurbitaceae, grown extensively in tropical and sub-tropical parts of the country. Cucumber production is greatly hampered by Cucumber Mosaic Virus (CMV). CMV is transmitted by mechanical inoculation and by aphid vectors in non-persistent manner. A survey was conducted in Jammu division to assess the status of the disease and the result revealed that disease incidence was maximum (34.66 %) in Bishnah of Jammu district and minimum (21.33 %) in Hirangar of Kathua district during 2019 while during 2020, maximum disease incidence of 36.00 per cent was recorded from Akhnoor of Jammu district and minimum 20.00 per cent was recorded from Hirangar of Kathua district. CMV was detected serologically through DAS-ELISA in the samples collected from all the locations surveyed during both the years. Biochemical analysis of different germplasm of cucumber revealed that total sugar and chlorophyll content were higher in resistant germplasm as compared to the susceptible ones whereas total soluble protein and total phenol content were higher in susceptible germplasm as compared to resistant ones. Host range study revealed that except Solanum melongena (brinjal), all other hosts (chilli, bottlegourd, tomato, bitter gourd, watermelon and muskmelon) were susceptible to cucumber mosaic virus. Epidemiological studies revealed that maximum and minimum temperature showed significant and positive correlation whereas relative humidity (maximum and minimum) showed negative correlation with disease intensity during both the years. However average rainfall showed non-significant negative correlation with the disease development. Temperature (maximum and minimum) also showed positive correlation with aphid population while relative humidity (maximum and minimum) and rainfall showed negative correlation during both the years. During the screening of different cucumber germplasm against cucumber mosaic disease, it was found that out of forty germplasm, two germplasm viz., Dasher II and Poinsett were resistant whereas eleven germplasm (CS-67, CS-70, CS-34, Cucumber green long, Vardan, Garima super, Malini, Nandini-732, Cucumber summer green, RK-40 and Local) were found susceptible during both the years. All the infected samples collected from screened germplasm showed positive reaction with the CMV specific antibody thus confirming the presence of virus except for Dasher II and Poinsett which showed negative response. Evaluation of different insecticides viz. imidacloprid, thiamethoxam, dimethoate, methyl-o-demeton and malathion, either singly or in combination revealed that seed treatment with imidacloprid + foliar application of imidacloprid at 15 days interval was found most effective treatment in controlling the aphid population (vector) and minimizing the disease intensity during both the years.en_US
dc.identifier.citationPreferred for your work: Google citation.en_US
dc.identifier.other36738
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810178481
dc.keywordsCUCUMBER MOSAIC VIRUS, DETECTION, EPIDEMIOLOGY, HOST RANGE, MANAGEMENT.en_US
dc.language.isoEnglishen_US
dc.pages64en_US
dc.publisherSher-e-Kashmir University of Agricultural Sciences and Technology of Jammuen_US
dc.subPlant Pathologyen_US
dc.themeEPIDEMIOLOGY AND MANAGEMENT OF MOSAIC OF CUCUMBERen_US
dc.these.typePh.Den_US
dc.titleEPIDEMIOLOGY AND MANAGEMENT OF MOSAIC OF CUCUMBERen_US
dc.typeThesisen_US
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