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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: Sericulture × Author: ANITHARANI, K. V. × Start date: 2010 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    INFLUENCE OF ANTIMICROBIAL BIOMOLECULES OF SELECTED MEDICINAL PLANTS ON BmNPV AND ASSOCIATED BACTERIAL ISOLATES IN Bombyx mori L.
    (University of Agricultural Sciences, Bangalore, 2023-02-08) ANITHARANI, K. V.; R. N. BHASKAR
    Flacherie is a serious disease of silkworm caused due to bacteria and virus. To manage this disease several chemical based bed disinfectants are being used, which leave residual toxicity in rearing bed and are not found eco-friendly. In view of these constraints, botanicals with antimicrobial biomolecules could be found as an alternative to control flacherie. Biomolecules found in the medicinal plants were estimated and separated from Adhatoda vasica and Phyllanthus niruri. The alkaloids, phenols, tannins, proteins, carbohydrates and flavonoids were found maximum in methanolic extract of P. niruri (10.08, 14.36, 401.19, 38.30, 52.01 and 64.83 g/g) followed by A. vasica compared to aqueous extracts. Further, methanolic (7.50 and 8.11 mm) and phenolic extracts (9.23 and 9.40 mm) of P. niruri exhibited maximum zone of inhibition against Staphylococcus sciuri at 10-7 dilution on 24 and 48 hours of incubation. Further, the methanolic extract of P. niruri was recorded maximum larval, biochemical and cocoon parameters in healthy and pathogen (BmNPV and S. sciuri) inoculated silkworms (PM×CSR2). Among biomolecules, phenols of P. niruri administered to silkworms recorded higher protein, lipid, carbohydrate and trehalose (23.35, 1.11, 29.83 and 18.13., 28.67, 1.23, 31.90 and 21.14 mg/ml) content. Furthermore, the maximum larval weight (27.76 and 26.78 g/10), minimum larval duration (26.90 and 26.07 days), mortality (8.00 and 7.00 %) and maximum ERR (91.33 and 92.67 %) were recorded in phenols administered silkworms. The cocoon weight, shell weight, shell ratio, filament length, NBFL and denier (1.56, 0.243 g, 15.81 %, 797.63, 670.69 m and 2.39., 1.56, 0.258 g, 16.60 %., 865.13, 865.13 m and 2.21) were also found maximum in phenols of P. niruri administered pathogen inoculated silkworms followed by tannins and alkaloids in both fourth and fifth instars.