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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: ANUSHA, H. G. × End date: 2019 × Start date: 2010 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    EPIZOOTIOLOGY OF MIXED INFECTION (FLACHERIE DISEASE) OF SILKWORM, Bombyx mori L. AND MOLECULAR CHARACTERIZATION OF ASSOCIATED BACTERIA
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-10-10) ANUSHA, H. G.; Bhaskar, R. N.
    The studies on “Epizootiology of mixed infection (flacherie disease) of silkworm, Bombyx mori L. and molecular characterization of associated bacteria” revealed that, there are ten bacterial isolates were isolated from different sources, only three isolates were used for molecular identification through 16S rRNA gene and in vivo study with BmNPV. As per the sequencing sof organisms, the isolated bacteria 1 had 95 percent similarity with Lysinibacillus sphaericus (LS), isolated bacteria 2 had 99 per cent similarity with Alcaligence faecalis (AF) strain SDK 2 which was reported first time in the infected silkworm. Isolated bacteria 3 had 99 per cent similarity with Bacillus subtilis C11 (BS). Inoculation of three bacterial isolates to third, fourth and fifth instar revealed, extended moulting and larval duration. In addition, ET50 for mortality and symptoms expression days were recorded maximum of 10.98 (AF) and 13.34 (AF) followed by 8.66 (BS+LS) and 10.76 (BS+LS) and minimum was recorded in combination of 5.05 (N+LS+AF) and 6.50 days (N+BS+LS). In dual inoculation viz., LS+AF (56.10, 47.95 and 52.05 %), AF+LS (48.02, 40.10 and 59.90 %), BS+LS recorded 46.81, 40.43 and 59.57 per cent number of worms entered to spinning, effective rate of rearing and larval mortality respectively. The BS+LS inoculated batches were recorded more cocoon weight (1.20, 1.25 1.32 g), shell weight (0.19, 0.22, 0.26 g) and shell percentage (15.83, 17.60 and 19.69 %) in all the three instars where as, the minimum was in BS+LS+N compared to control. It was clearly inferred that, the newly identified AF found to be less pathogenic compared to in combination.