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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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20162
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Author: NEELAVVA, KONANAVAR × Type: Thesis ×
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    ThesisItemOpen Access
    DNA MARKER-ASSISTED IDENTIFICATION OF GENOMIC REGIONS CONTROLLING ANTHESIS-SILKING INTERVAL AND LINEAR AND NON-LINEAR COMPONENTS OF GENOTYPIC VARIANCE IN MAIZE (Zea mays L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-12-24) NEELAVVA, KONANAVAR; Gangappa, E.
    An investigation was undertaken to identify QTLs/SSR markers linked to genomic regions controlling Anthesis-Silking Interval (ASI) and grain yield and to unravel the genetics of ASI, grain yield and its components using generation mean analysis and Triple Test Cross analysis from summer 2013 to rabi 2014 at Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru. Two polymorphic inbred lines MAI-349 and BGD-89 were involved to generate F2 mapping population and this F2 population was genotyped with 40 SSR markers which had discriminated the inbred lines MAI-349 and BGD-89. The corresponding F2:3 progeny families were evaluated for ASI, grain yield and its component traits. Single marker analysis revealed association of eleven SSR markers controlling ASI which had explained phenotypic variance ranging from 5.41 to 12.50% and nine markers linked with grain yield plant-1 and had explained phenotypic variance ranging from 5.99 to 8.20%. Two QTLs linked to ASI detected on chromosome 5 and 7 showed dominant and overdominant gene actions, respectively, and were flanked by umc1523-umc1829 with phenotypic variance of 16.25% and umc2334-umc1792 with phenotypic variance of 5.51%, respectively. Three minor QTLs controlling grain yield were detected on chromosomes 6 (one QTL with phenotypic variance 4.29%) and 9 (two QTLs with phenotypic variance 7.71 and 6.73 %, respectively) displayed over-dominance and were flanked by the markers umc1014-umc1020, umc1387-phi065 and phi065-umc1714. Epistasis played a significant role in the inheritance of all the characters studied. Preponderance of additive component for all the traits indicated the utility of improvement through simple selection. Reciprocal recurrent selection can be an effective breeding method for the improvement of those characters controlled by dominant gene action
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    ThesisItemOpen Access
    DNA MARKER-ASSISTED IDENTIFICATION OF GENOMIC REGIONS CONTROLLING ANTHESIS-SILKING
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-12-27) NEELAVVA, KONANAVAR; Gangappa, E.
    An investigation was undertaken to identify QTLs/SSR markers linked to genomic regions controlling Anthesis-Silking Interval (ASI) and grain yield and to unravel the genetics of ASI, grain yield and its components using generation mean analysis and Triple Test Cross analysis from summer 2013 to rabi 2014 at Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru. Two polymorphic inbred lines MAI-349 and BGD-89 were involved to generate F2 mapping population and this F2 population was genotyped with 40 SSR markers which had discriminated the inbred lines MAI-349 and BGD-89. The corresponding F2:3 progeny families were evaluated for ASI, grain yield and its component traits. Single marker analysis revealed association of eleven SSR markers controlling ASI which had explained phenotypic variance ranging from 5.41 to 12.50% and nine markers linked with grain yield plant-1 and had explained phenotypic variance ranging from 5.99 to 8.20%. Two QTLs linked to ASI detected on chromosome 5 and 7 showed dominant and overdominant gene actions, respectively, and were flanked by umc1523-umc1829 with phenotypic variance of 16.25% and umc2334-umc1792 with phenotypic variance of 5.51%, respectively. Three minor QTLs controlling grain yield were detected on chromosomes 6 (one QTL with phenotypic variance 4.29%) and 9 (two QTLs with phenotypic variance 7.71 and 6.73 %, respectively) displayed over-dominance and were flanked by the markers umc1014-umc1020, umc1387-phi065 and phi065-umc1714. Epistasis played a significant role in the inheritance of all the characters studied. Preponderance of additive component for all the traits indicated the utility of improvement through simple selection. Reciprocal recurrent selection can be an effective breeding method for the improvement of those characters controlled by dominant gene action
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    ThesisItemOpen Access
    DOES CYTOPLASM INFLUENCE THE EXPRESSION OF FRUIT YIELD, FRUIT QUALITY TRAITS AND RESPONSES TO ANTHRACNOSE DISEASE AND THRIPS INFESTATION IN CHILLI (Capsicum annuum L.)?
    (University of Agricultural Sciences GKVK, Bangalore, 41123) NEELAVVA, KONANAVAR; MOHAN RAO, A
    Commercialization of cytoplasm-nuclear genetic male sterile (CNMS) hybrids in chilli would be justified if CMS hybrids offer additional benefits either in terms of improved performance, quality or they are comparable to conventional hybrids for defense traits. Under this premise, 42 iso-nuclear alloplasmic hybrids (21 each of A×R & B×R crosses involving 3 CNMS (A) lines, their counterpart fertile (B) lines and 7 restorer (R) lines), were evaluated at the Experimental Plots, ‘K’ Block and Hot Pepper Improvement Unit, Department of Genetics & Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore during 2011 dry and rainy seasons, to assess the cytoplasmic effects in terms of parental gca effects, hybrid mean performance, sca effects and midparent heterosis on fruit yield and its contributing traits, fruit quality traits (ascorbic acid, capsaicin, oleoresin & phenols) and response to anthracnose disease and thrips infestation. A×R hybrids as a group differed significantly from those of B×R hybrids as a group for fresh green fruit yield plant-1, ascorbic acid and capsaicin contents, suggesting cytoplasmic influence on expression of these traits. Significant differences between A- and B- lines for their gca effects was an indication of male sterility inducing cytoplasm effects on the ability of the lines to combine with common testers. The differences between A×R and B×R crosses for mean performances, sca effects and mid-parent heterosis was significant. However, the direction and magnitudes of differences (where detected) was of lower magnitudes and varied with the trait as well as nuclear genetic background of the genotype and the crosses.