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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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20151
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Subject: Sericulture × Author: MADHURI, THINNALURI × Start date: 1978 ×
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    ThesisItemOpen Access
    DISCOVERY OF QTLs FOR DROUGHT TOLERANCE TRAITS USING A BIPARENTAL MAPPING POPULATION OF MULBERRY SEGREGATING FOR ROOT AND WATER USE EFFICIENCY (WUE)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-10-26) MADHURI, THINNALURI; Narayanaswamy, T. K
    Soil moisture stress is one of the main factors limiting the mulberry productivity in India. Maintaining leaf water relations by better root system and maintenance of superior metabolism for positive carbon gain can enhance drought adaptability. These traits are quantitatively inherited and therefore requires a forward molecular breeding approach to pyramid them. Towards identifying QTL for these complex traits, mapping population segregating for WUE and root traits was extensively characterized for phenotypic and molecular diversity. Significant genetic variability was noticed in various physiological and biometric traits among the progeny. Root weight varied between 23.66 and 250.50 g p-1 while Δ13C, a surrogate for WUE varied between 15.65 and 21.28‰. The traits segregated in a 1:1 pattern conforming to the pseudo test cross in out beeding perennials. The F1 progeny MPR-89, MPR-120, MPR-53, MPR-68 and MPR- 123 which segregated into low Δ13C category also had high TDM, LA and R/S ratio and appeared to be the most suitable genotypes for water limited conditions. A total of 751 SSR markers were screened which revealed 453 markers polymorphic between parents. A linkage map with 14 linkage groups (LGs) with 134 linked markers had a map length of 4263.5 cM. The distance between two linked markers varied from 5.0 to 49.8 cM with an average distance of 31.80 cM. QTL analysis was performed using composite interval mapping (CIM) using QTL CARTOGRAPHER (version 2.5). The CIM identified 23, 11 and 9 QTLs controlling various traits respectively on first, second and pooled data. Further, validation of these QTLs and saturation of these regions would help the breeder to exploit root traits, WUE and associated traits for genetic improvement of mulberry varieties and also to evolve new varieties adapted to water limited conditions.
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    ThesisItemOpen Access
    INVESTIGATIONS ON MANAGEMENT OF MULBERRY MEALY BUG MACONELLICOCCUS HIRSUTUS (GREEN) USING PLANT PRODUCTS
    (University of Agricultural Sciences GKVK, Bangalore, 41120) MADHURI, THINNALURI; BHASKAR, R N
    The study on the “Investigations on Management of Mulberry Mealy bug Maconellicoccus hirsutus (Green) using plant products” was carried out during 2010-12 at the Department of Sericulture, UAS, GKVK, Bangalore - 65. The finding revealed that, the repellent property of seed kernel extracts exerted better experimental results than their corresponding leaf extracts. In most of the case, seed kernels found effective and promising viz neem (96.53%), Pongamia (84.73%) and Mahua (74.87 %). The same trend was observed even after 48 hours of spray. In all the other treatments, repellent property of botanicals against mealy bug was increased significantly with increased exposure period. Seed kernel extract of neem was found effective in recording highest (78.67%) nymphal mortality followed by Pongamia (56.00%) and Mahua (46.67%). There was no significant decrease in tukra incidence in pre treatment count after 7 days of spray. However, the effect was found significant after 14 days of spray (2nd spray) and it was decreased more in seed kernel extracts of neem (13.12%) and Pongamia (10.67%). On the other hand in control plots, the incidence of tukra was noticed from 31.59 to 41.27 per cent which was comparatively more than botanical spray. Further, after botanical spray the affected leaves did not show any variation in moisture content, moisture loss and moisture retention capacity of M5 mulberry leaves and there was no significant difference due to botanicals sprayed on morpho-physiological parameters in the affected mulberry leaves.