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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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  • ThesisItemOpen Access
    MOLECULAR ANALYSIS OF INTERACTION BETWEEN MICROBIAL INOCULANTS ON EARLY BLIGHT OF TOMATO AND DOWNY MILDEW OF CUCUMBER
    (University of Agricultural Sciences GKVK, Bangalore, 2021-06-30) POOJA, R; RAVISHANKAR, K. V.
    Biocontrol agents in management of plant diseases are gaining huge importance due to their advantage over chemical control methods. This study was conducted to evaluate the potential antagonistic agents against Alternaria solani (which causes the early blight of tomato) and to understand the interaction between host, pathogen and biocontrol agent. Among the different isolates studied in dual culture assay JL5 (Trichoderma longibrachiatum), GJ16B (Trichoderma harzianum), UGF (Bacillus subtilis), LA (Trichoderma pleuroticum) showed significant inhibition of A. solani. GCMS analysis revealed the presence of different classes of VOCs (Volatile organic compounds) i.e. terpenes, alcohols, esters, aldehydes, hydrocarbons and also the induction of some VOCs in the mixed culture which are absent in pure culture of pathogen and Trichoderma sp. In in-vivo assay JL5, GJ16B and LA treated plants showed reduced symptoms of early blight compare to the control. The activity of defense related enzyme i.e peroxidase (POX), superoxide dismutase (SOD) and polyphenol oxidase (PPO) found to be higher in JL5, GJ16B and UGF treated plants after inoculation of pathogen. The total phenol and flavonoid content of the plant showed increasing trend after challenging with pathogen being highest in all treated plants. Expression of defense related genes i.e. POX, PR2, PR1 increased in some treatments like JL5, UGF followed by pathogen inoculation indicating the role of the biocontrol agents in inducing the host defense response upon pathogen infection. Bioagents JL5, GJ16B and AMC were evaluated here did not show any effect on controlling downy mildew of cucumber under field condition