STUDIES ON VIRUS DISEASE OF CAPSICUM (Capsicum annuum L.)

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dc.contributor.advisorM., ABDUL KAREEM
dc.contributor.advisorMESTA, RAGHAVENDRA K.
dc.contributor.authorY. S., MANJUNATHA
dc.contributor.otherAJJAPPALAVARA, P. S.
dc.contributor.otherREDDI, SANJEEVREDDI G.
dc.date.accessioned2023-06-12T11:16:04Z
dc.date.available2023-06-12T11:16:04Z
dc.date.issued2021-12-22
dc.description.abstractA study on virus disease of capsicum was undertaken at Horticultural Research and Extension Centre, Devihosur, Haveri during 2019-20. The roving survey results revealed that the capsicum virus disease was prevalent in all the surveyed districts of Karnataka. The average per cent disease incidence in overall surveyed districts was 70.46%. Among five districts surveyed, highest disease incidence was recorded in Haveri (89%), followed by Belagavi (84%), Chikkaballapur (76%) and Kolar (60%) whereas the least disease incidence was recorded in Bengaluru rural (43.33%). Similarly, among the 10 taluks, highest disease incidence of 92% was observed in Byadgi followed by Ramdurga (86.66%), whereas the least incidence of 43.33% was recorded in Nelamangala. Similarly, among the 22 villages, highest incidence of 100% was recorded in Bannahatti village of Byadgi, whereas the least incidence of 20% was recorded in Tadshigatta village of Nelamangala. Upon amplification by PCR, 531 bp and 1500 bp size amplicon was amplified in diseased sample of capsicum and also in diseased sample of chilli (positive control) and no amplification was obtained in healthy sample of capsicum (negative control). No amplification was obtained with tospovirus, PMMoV, CMV, TMV, TEV, ToMV. Thus, the investigation focused on molecular identification of virus associated with disease of capsicum by employing PCR techniques convincingly revealed that ChiVMV and ChiLCV association with virus disease of capsicum was determined. The host range studies revealed that the potyvirus (ChiVMV) isolate infected members of family Solanaceae only. Among the tested plant species, it has infected Datura metel, Datura stromonium, Nicotiana tabacum L. var. White burly and Nicotiana glutinosa in addition with chilli and capsicum (bell pepper). No symptoms were observed on sap inoculated plants of cucumber, cowpea and beans. Among the twenty genotypes screened, none of them were found to be immune, two genotypes viz., Diana and Indra were found resistant and Yalavigi selection was found moderately susceptible. However, twelve genotypes viz., DCA-246, DCA-308, DCA-311, DCA-315, DCA-329, DCA-346, DCA-347, DCA-355, Priyanka, Asha F1, Nemalite, and Indus-11 were found to be susceptible. Five genotypes viz., DCA-310, Tarihal selection and Arka Mohini, Arka Gourav and Arka Basant were found to be highly susceptible.en_US
dc.identifier.otherUHS18PGM1057
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810197576
dc.keywordsHorticulture, Pathology, Plant Pathology, Virus, Disease, Tospovirus, Capsicum, Chilli, Arka Mohini, Arka Gourav, Arka Basant, Cowpea, Bell Pepper, Nemalite, Genotypes, Nicotiana Glutinosa, Datura Metel, Datura Stromonium, Roving Survey, Solanaceae, Molecular, Amplification, Amplicon, Amplified, Capsicum annuum L. UHS18PGM1057.en_US
dc.language.isoEnglishen_US
dc.pages90p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy).en_US
dc.publisherUniversity of Horticultural Sciences Bagalkot. (College of Horticulture, Bagalkot).en_US
dc.subPlant Pathologyen_US
dc.themeSTUDIES ON VIRUS DISEASE OF CAPSICUM (Capsicum annuum L.)en_US
dc.these.typeM.Scen_US
dc.titleSTUDIES ON VIRUS DISEASE OF CAPSICUM (Capsicum annuum L.)en_US
dc.typeThesisen_US
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