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University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

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Subject: Plant Pathology × Author: ANAND V. HALAKERI × End date: 2009 × Start date: 2000 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    STUDIES ON SERODIAGNOSIS, EPIDEMIOLOGY AND MANAGEMENT OF SUNFLOWER NECROSIS VIRAL DISEASE IN NORTHERN ICARNATAKA
    (University of Agricultural Sciences GKVK, Banglore, 2007-08-31) ANAND V. HALAKERI; A. S. BYADGl
    Sunflower necrosis is a major virus disease of sunflower cau^sed by Tobacco Streak Virus. It was first reported from Kolar district of Kamataka State during 1997. The roving survey for disease incidence in Northern Kamataka was undertaken cmd disease map was developed, which revealed the presence of disease in all the three seasons. The disease was severe in Bijapur, Raichur and Koppal districts showing 15-20 per cent incidence. Infected plants showed mosaic, marginal necrosis and malformation of leaves, calyx and earhead, early infected plants showed partial seed filling. TSV -S had wide host range and its Thermal Inactivation Point was 45°C, Dilution End Point 10-4 and Longevity in vitro of 8 h. The epidemiologieal studies indicated positive correlation of disease with thrips population and also with maximum temperature. The vims was purified by extraction in Phosphate buffer, PEG precipitation, density gradient centrifugation and ultra centrifugation. Electron microscopic observations revealed isometric shaped particles in decoration method. Immunizing rabbit with purified TSV -3 produced the antisemm. SDS-P AGE revealed 30 Kda Protein band when stained with coomassie brillant blue. Direct Antigen Coating Enzyme Linked Immuno Sorbant Assay indicated presence of vims particles in samples of sunflower, cowpea, peas, green gram, tomato, soybean, black gram and red gram but not in seeds of diseased plant. In Immunodiffusion test precipitation line appeared around wells containing diseased samples. RT-PCR yielded 800 bp length coat protein gene. The disease had a drastic effect on yield parameters of sunflower. Germplasm lines GMU-209, GMU-244, GMU-249, and GMU-259 exhibited some degree of tolerance properties with less than 10 per cent disease incidence. Crop could be protected from heavy loss due to vims infection by Imidacloprid seed treatment (@ 5 g/kg) + spray (@ 0.25 ml) at 30, 45 and 60 days after sowing and sorghum as border crop.