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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: Genetics and Plant Breeding × End date: 2007 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    STUDIES ON GENETIC DIVERGENCE IN TAMARIND (Tamarindus indica L.) ACROSS PROVENANCES OF SOUTHERN KARNATAKA
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 1993) GANGA PRASAD, S; KULKARNI, R S
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    GENOTYPE ENVIRONMENT INTERACTION IN RICE (Oryza sativa L.) WITH SPECIAL REFERENCE TO COLD TOLERANCE
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 1992) SHANTHAKUMAR, G; VEERAPPA, K B
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    RESISTANCE MECHANISM OF Lycopersicon SPECIES TO THE VECTOR Bemisia tabaci AND ULTRASTRUCTURAL CHANGES IN LEAF CURL VIRUS INFECTED TOMATO PLANTS
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 1989) CHANNARAYAPPA; SHIVASHANKAR, G
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    SOMACLONAL VARIATION AND INTERSPECIFIC HYBRIDIZATION FOR IMPROVING FODDER YIELD AND QUALITY IN HYBRID PENNISETUM [Pennisetum americanum (L.) K. Schum. x P. purpureum Schum.]
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 1999-08-30) BHAT, RAMESH; KURUVINASHETTI, M.S.
    NB 21, a commonly grown cultivar of hybrid pennisetum [Pennisetum americanum (L) K. Schum. x P. purpureum Schum.] was investigated for somaclonal variation through phenotypic, cytological, biochemical and molecular approaches. Newly produced interspecific hybrids between three bajra lines (89111 A, 90111A and 93333A) and a napier grass (Thick napier) were also studied. Frequency of callus induction from young inflorescence explants was high (100%) on modified MS medium with kinetin (1.25 mg f^) and 2,4-0 (1.25 mg 1'^). Majority (>95 %) of the callus induced was embryogenic. Lower levels of 2,4-D (1.00 and 1.25 mg 1'^) along with selective subculture of organized sectors was found effective for long term maintenance of totipotent callus. Plant regeneration from organized sectors was frequent (>92 %) on basa' MS. Histological studies revealed that plant regeneration occurred via somatic embryogenesis. Profuse rooting was induced on MS medium with NAA (1.00 mg I'Y Field evaluation of vegetative progenies of somaclones (272) along with donor (NB 21) showed widespread variation for many morphological, fodder yield and quality parameters. Comparatively, high frequency of variants was noticed for quality parameters (77% for crude protein) than quantitative characters (19% for plant height and stem thickness). Available variation indicated usefulness of somaclones in isolating genotypes with better fodder yield and quality. Cytological, biochemical (isozyme) and molecular (Random Amplified Polymorphic DNA - RAPD) analyses of somaclones indicated the possibility of linkage alterations through chromosomal rearrangements resulting into superior somaclones possessing a combination of desirable growth attributes of napier grass with better fodder quality of bajra. Variation among the Fi plants of Individual interspecific crosses was very high for many vegetative characters especially, for clump morphology,number of tillers,leafiness and plant height. Eight new hybrid clones were identified as superior over NB 21 (adapted cultivar) and IGFRI 7 (national check) for fodder yield. The best clone with glabrous leaves had 80 and 87.5 per cent increased fodder yield over IGFRI 7 and NB 21, respectively.
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    ThesisItemOpen Access
    ANALYSIS OF THREE-WAY AND SINGLE CROSS HYBRIDS FOR STABILITY AND SEED PRODUCTION POTENTIALITY IN SUNFLOWER (Helianthus annuus L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE, 1998) B H, HALASWAMY; K, Virupakshappa
    Abstract not available
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    ThesisItemOpen Access
    IN VITRO REGENERATION OF PLANTLETS AND NATURE OF SOMACLONAL VARIATIONS IN FINGER MILLET (Eleusine coracana Gaertn.)
    (University of Agricultural Sciences, Bangalore, 1996) BHAT, B VENKATESH; SEETHARAM, A
    Abstract not available
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    ThesisItemOpen Access
    SYNTHESIS AND EVALUATION OF SYNTHETIC VARIETIES OF SUNFLOWER ( Helianthus annuus L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK ,BANGALORE, 1999-12-10) PATIL, RAJESH S.; KULKARNI, R.S.
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    ThesisItemOpen Access
    GENETICS OF FRUIT YIELD, YIELD COMPONENTS AND REACTION TO MAJOR BIOTIC STRESSES IN CHILLI (Capsicum annuum L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES, DHARWAD, 1997) V HIREMATH, NANDEESH; S J, PATIL
    An investigation on chilli (Capsicum annuum L.) was undertaken at Botany Garden, University of Agricultural Sciences, Dharwad during 1994-96 with two experiments viz., 42 F2s from 7x7 diallel to estimate combining abilities and residual heterosis (Expt. 1) and 75 diverse germplasm from Karnataka, Andhra Pradesh, Tamil Nadu, Uttar Pradesh and Vietnam to work out variability, heritability, genetic advance, correlation and path analysis (Expt. 2) of 12 metric traits including fruit yield and 5 major biotic stresses viz., murda/1eaf curl complex, mosaic disease, fruit rot, powdery mildew and fruit borer. The significant differences due to genotypes for all characters in both the experiments indicated the suitability of material for the present study. The combining ability analysis revealed that Byadgi dabbi, Lokur and Puri red parents were found as good general combiners for most of the traits. The Lokur X Puri red (6x7) cross was identified as the most promising cross to obtain elite progenies for vegetable purpose with high yield and multiple resistance to all major biotic stresses. The superiority of 6x7 cross is attributed to high gca effects of both parents, non-significant sea effects, negligible reciprocal cross differences and high per se performance along with significant residual heterosis of 123.61, 93.85 and 37.26 percent for fruit number, fruit yield/plant and plot yield respectively over Byadgi kaddi as standard check. In addition, Byadgi kaddi x Puri red (3x7), Sankeshwar x Puri red (4x7) and Button x Puri red (5x7) crosses had the potential to provide good base material for future breeding programmes. The germplasm evaluation indicated that majority of fruit traits and yield components recorded high GCV and heriability than plant growth traits. High GCV, heritability coupled with high genetic advance were recorded for number of fruits/plant, fruit yield/plant, fruit related traits like length, volume, surface area. Among biotic stresses, high GCV moderate heritability and genetic advance were recorded for fruit rot followed by murda complex, mosaic disease and fruit borer. The number of fruits/plant average fruit weight and fruit traits (length, diameter, volume and surface area) showed significant correlation among themselves and with fruit yield/plant. But murda complex, mosaic disease and fruit borer exhibited negative association with fruit number and fruit number exerted high direct effects followed by average fruit weight. Therefore, the future chilli breeding programmes should include fruit length, number of fruits/plant and average fruit weight in formulating the selection criteria as they recorded high GCV, heritability, genetic advance alongwith significant positive correlation and high direct effects on fruit yield/plant.
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    ThesisItemOpen Access
    HISTOLOGICAL BASIS OF GENETIC MALE STERILITY AND ITS UTILIZATION IN HYBRID DEVELOPMENT IN DIPLOID COTTONS
    (UNIVERSITY OF AGRICULTURAL SCIENCES, DHARWAD, 1997) S T, KAJJIDONI; S J, PATIL
    An investigation was carried out to study the histological basis of male sterility in two genetic male sterile lines of G. arboreuML. (DS-5 and GAKA-423) and their use in exploitation of heterosis at iNtra and interspecific(g. arboreum L.xG. herbaceum L.) levels in desi cotton. A detailed comparative study on histological features of anther development in two GMS and their fertile counter part lines revealed that, the process of microsporogenesis was normal with regular meiosis until the formation of microspores. Abnormality was noticed during further development of microspores at the time of pollen grain formation in both the GMS lines. The heterozygous condition of GMS based hybrids of G. arboreum L. had enhancing effect on seed cotton yield and reducing effect on ginning out turn per cent compared to conventional hybrids. Similarly among the interspecific crosses, the heterozygous condition of male sterility character had enhancing effect on anther number, leaf length and reducing effect on ginning outturn per cent. Among crosses of G. arboreum L. the GMS hybrids exhibited better average heterosis than conventional hybrids. Four GMS based hybrids viz, DS- 5x30802, DS-5xB-Desh, DS-5xNo.2708 and DS-5xNo.2631 were the most promising hybrids in respect of seed cotton yield. Among interspecific crosses, there was no significant difference for seed cotton yield between GMS based and conventional hybrids. Interspecific hybrids exhibited high average heterosis (33.68 and 34.08%) for seed cotton yield and number of bolls per plant (29.95 and 34.08%) than intraspecific hybrids involving G. arboreum L. in GMS and conventional cross combinations. Three interspecific crosses viz, DS-5xSM-88, DS-5xKumpta and DS-5xJayadhar exhibited consistently significant better parent heterosis in both GMS based and conventional cross combinations. The combining ability analysis of G. arboreum L. and interspecific crosses revealed predominance of SCA variance for all the thirteen characters under study in both GMS and conventional combinations. Importance of both the GCA and SCA variances was observed for seed cotton yield, number of bolls per plant, ginning outturn, lint index and halo length in GMS based crosses of G. arboreum L. The same trend was alsp observed in conventional crosses of G. arboreum L. except for lint index and halo length traits. Predominance of both GCA and SCA variances was observed for plant height, number of monopodial branches, yield of seed cotton per plant, boll weight and number of seeds per boll in interspecific GMS based crosses. A similar trend was also observed for days to 50 per cent flowering, seed cotton yield per plant, number of bolls per plant and lint index in conventional crosses.