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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: Apiculture × Start date: 1961 × Type: Thesis ×
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    ThesisItemOpen Access
    INFLUENCE OF HIVE DESIGN ON SEASONAL PERFORMANCE OF STINGLESS HONEY BEE, Tetragonula iridipennis (Smith)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-08-03) PALLAVI, K; Kuberappa, G .C
    Stingless bees or dammer bees are found in most parts of the world and these bees considered as valuable domestic species. Rearing of these bees is called as meliponiculture, (Heard, 1999). Meliponiculture has been practiced in many countries including various parts of Latin America. Stingless bees occur in all tropical regions of the world. Hundreds of species have been described. These belong to the super family Apoidea, family Apidae and sub family Meliponinae, which is one among three subfamilies of Apidae, which consists of eight genera, having 15 sub-genera. Meliponinae consists of two tribes Meliponini and Trigonini (Wille,1983). Trigona is the largest and most widely distributed genus, which includes 130 species under ten sub-genera. Melipona consists of 50 species and confined to the Neotropics. All Asian and African stingless bee species belong to the tribe Trigonini. The various genera in this tribe include Trigona, Plebeia. Tetragona and Nanotrigona (Camargo et al., 1988)
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    ThesisItemOpen Access
    CULTURABLE MICROBIAL DIVERSITY ASSOCIATED WITH GUT OF APIS SPP. (HYMENOPTERA: APIDAE)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-07-10) SUMA, K. P.; Shylesha, A N
    Honeybees are known to harbour microorganisms in the gut which play an important role in their nutrition. In the present study bacterial strains were isolated from foregut, midgut and hindgut of Apis cerana, A. mellifera, A. jlorea and A. dorsata workers and drones and from different gut regions of queen of A. cerana and A. jlorae collected from different regions of Bengaluru. Identification and characterization of microbes was done by gram staining technique for each isolated strains to differentiate between gram positive and gram negative organisms. The morphological characters of all isolated bacterial colonies were also studied. Total bacterial genomic DNA was extracted from the gut and amplified using PCR with 16S rRNA primers. The partial 16S rDNA sequences from Apis spp. revealed the presence of novel bacterial flora, Bacillus spp. which were more predominant in different guts of worker, queen and drone of Apis spp. The gut microflora varied from gut to gut within the caste and also varied from caste to caste within the species. Acinetobacter iwoffi and Klebsiella varricolawas identified only in Apis jlorea drones compared with other castes and species. In Apis dorsata, Pseudomonas sp. was found which was not found in any other species. The phylogenetic analysis of the Apzs spp. using bacterial strains of different gut regions of different castes clearly indicated the microbial diversity which can be used for management of bee health and as antimicrobial agents.
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    ThesisItemOpen Access
    MELISSOPALYNOLOGICAL STUDIES OF Apis cerana Fab. IN NORTH BENGALURU REGION
    (University of Agricultural Sciences GKVK, Bangalore, 2012-07-10) MARC, NDIMUKAGA.; SHYLESHA, A. N.
    Melissopalynological analysis for identification of bee flora of North Bengaluru was carried out at Department of Apiculture, University of Agricultural Sciences, GKVK, Bengaluru. Based on qualitative and quantitative pollen analysis, eight honey samples and 65 pollen loads collected between September to December, 2011 (Six samples) and between January to April, 2012 (two samples) in North Bengaluru area from India were classified based on their botanical origin to identify the most important floral sources as well as a study on existing bee flora to develop a floral calendar for the region. A total of 42 different pollen types were identified in the honey samples referable to 21 Families, with the best represented families being Fabaceae (19%), Myrtaceae (14%) and Asteraceae (10%). Predominant pollen types were: Mimosa pudica in three samples, Canthium parviflorum and Dendrophthoe sp in one sample where as 26 pollen types were identified from pollen loads samples where Cocos nucifera was the dominant pollen in all pollen types combined together with 40 % of cumulative percentage of occurrence. 56 plant species were recorded as source of nectar/ or pollen for Apis cerana in which some of the flowering plants proved a significant importance to the beekeeping industry in the area by providing pollen and nectar sources throughout the year. These were Sechium edule (Cucurbitaceae), Hamelia patens (Rubiaceae), Clerodendrum speciosum (Verbenaceae), Altemanthera sessilis (Amaranthaceae), Tagetes lemmonii (Asteraceae), Citrus limon (Rutaceae), Tagetes erecta (Asteraceae), Caricapapaya (Caricaceae), Spathiphyllum sp (Araceae), Tagetes tenuifolia (Asteraceae) and Tumera ulmiforia (Turneraceae). The correspondence analysis showed a similarity among the honey and pollen loads’ samples based on pollen composition. The quantitative analysis placed honey samples into Class I (one sample), Class II (four samples), Class III (two samples) and class IV (one sample). A similarity index showed a close degree of similarity in some paired honey samples ranging from 0.54 to 0.8 where as other paired samples showed a dissimilarity ranging from 0.12 to 0.48.
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    ThesisItemOpen Access
    STUDIES ON POLLINATION WITH SPECIAL REFERENCE TO THE ROLE OF HONEY BEES IN HYBRID SEED PRODUCTION OF COTTON
    (University of Agricultural Sciences GKVK, Bangalore, 2010-06-10) VIJAYA KUMAR, K. T.; Bhat, N. S.
    Experiment was conducted at NSP, GKVK, Bangalore to study on pollination with special reference to the role of honeybees in hybrid seed production of cotton PKVH5. Cotton flowers were visited by fourteen species of insect pollinators on both CMS and R line of cotton, all of them belong to order hymenoptera. The mean relative abundance of honeybees (A. cerana, A. dorsata, A. florea) constituted 65 to 70 per cent on CMS and 75 to 78 per cent on R line. Among honeybees, A. florea was most predominant followed by A. cerana. The peak foraging activity of honeybees showed a maximum at 13:00 h on adjacent and central rows of CMS line and at 11:00 h on R line, whereas other pollinators showed bimodal activity at 9:00h and 17:00h on both the lines. The maximum floral nectar secretion was recorded at 18:00 h (14.71 μl) and TSS was at 17:00 h (31.33 per cent). As the number of bee visits to CMS flowers increased, so was the boll set and seed set. In total moves of A. cerana within and between parental lines, 15.25 per cent accounted for A to R and 8.75 per cent for R to A visits. In the open pollination of CMS, the per cent of boll set (82.66 and 80.33), seed yield per plant (82.76 and 74.58 g), number of seeds per boll (20.33 and 17.33), test weight (12.24 and 12.46 g) and seed oil content (16.73 and 15.23 per cent) were significantly higher in adjacent rows of CMS line than in central ones. The seed yield per plant was 4.31 per cent more under pollination with high bee density (8 frame bees) when compared to that with low bee density (4 frames).
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    ThesisItemOpen Access
    INSECT POLLINATORS OF SELECTED MEDICINAL CROPS WITH SPECIAL REFERENCE TO THE ROLE OF HONEYBEES IN POLLINATION OF HONEY PLANT, Ammi majus L.
    (University of Agricultural Sciences GKVK, Bangalore, 2008-06-10) SOWMYA, K. S.; KUBERAPPA, G. C.
    Insect pollinators activity was observed on seven selected medicinal crops viz., malbar nut tree (adusoge), garden rue (naagadaali), bitter wort (kaadu sevanthi), shyamakranta (vishnukanthi), stevia (madhuvantha), wild croton (kaadu haralu) and honey plant (madhu gida) during 2007 at Herbal garden, Division o f Horticulture, University of Agricultural Sciences, GKVK, Bangalore. At flowering, medicinal crops were visited by twenty five species of insects belonging to seven families of hymenoptera, two families of diptera and five families of lepidoptera. Foraging activity of honey bee species varied with the crop and time. The peak pollen and nectar foraging activity was observed between 1000 to 1400 h on all selected medicinal crops. Pollen load carried by different species of honey bees from honey plant, showed the significant variation. The maximum pollen load was carried by Apis cerena (5.15 mg), followed by A. florae (4.13 mg) and Trigona iridipennis (1.85 mg). The per cent seed set, per cent flower drop, seed length (cm) and 1000 seed weight were maximum in twelve bee visits per umbel. Impact o f different modes of pollination on qualitative and quantitative parameters in honey plant such as per cent flower drop, 100 fresh umbel weight, 100 dry umbel weight, number o f seeds per umbel, filled seeds, test weight, per cent oil content and germination were recorded significantly maximum in open pollinated plots, followed by plots caged with A. florea, A. cerena and T. iridipennis and lowest was recorded in control plots.
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    ThesisItemOpen Access
    STUDIES ON BEE FAUNAL DIVERSITY OF BANGALORE REGION
    (University of Agricultural Sciences GKVK, Bangalore, 2006-09-10) SUMA, S.; BHAT, N. S.
    The study on faunal diversity o f non-Apis bees (Super family: Apoidea) in and around Bangalore region revealed 37 species in 12 genera under three families viz, Apidae, Halictidae and Megachilidae and five sub families viz, Apinae, Xylocopinae, Halictinae, Nomiinae and Megachilinae. The genera included under the study are Amegilla Friese includes four species, Braunsapis Michener one species, Ceratina Latreille five species, Coelioxys Latreille one species, Halictus Latreille three species, Lasioglossum Curtis four species, Lithnrgus Berthold one species, Megachile Latreille seven species, Nomia Latreille four species, Thyreus Jurine two species, Steganomus Retsima one species and Xylocopa Latreille four species. All these species were collected while foraging on 24 different plant species. Each of the specimens are described and illustrated. Keys are also given for their identification. All these species are useful to mankind as pollinators. Megachile Latreille pollinates leguminous crops like field bean, french bean, red gram, sesame, crotalaria, and also tulasi. Xylocopa Latreille pollinates gliricidia, tomato, Brinjal, french bean, field bean, crotalaria, red gram. Ceratina Latreille pollinates tulasi, field bean, french bean, marigold, goldenrod, melissa, portulaca, crotalaria, sesame, Tecoma. These bees built their nests in tree hollows, building holes, soil mounds, wood burrows, bird nests etc. Megachile, mason bees were found building their nests in hard wood cuttings, building holes, egg shell sheat, by using mud, and leaf cutter bees were found building their nests in building holes using leaf bits. Amegilla confusa Smith also builts its nest in building holes using leaf bits. Ceratina (Pithitis) binghami Cockerell builts its nest in both soft and hard wood cuttings like rose and bamboo respectively. Ceratina (Pithitis) hieroglyphica Smith builts its nest in soft wood cuttings like rose. Xylocopa spp. built their nests in hard wood cuttings like eucalyptus and bamboo.
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    ThesisItemOpen Access
    STUDIES ON NON-APIS BEE FAUNAL DIVERSITY OF WESTERN GHAT REGION OF KARNATAKA
    (University of Agricultural Sciences GKVK, Bangalore, 2008-07-02) NAYANA, E. D.; BHAT, N. S.
    The study on faunal diversity o f Non- Apis bees (Super family: Apoidea) in and around western gnat region from places like Shimoga, Chikkamagalur, and Kodagu Districts revealed 47 species in 13 genera under 4 families viz., Apidae, Halictidae, Meghachilidae, and Collitidae and 6 sub-families viz., Apinae, Xylocopinae, Halictinae, Nominae, Meghachilinae, and Hylaeinae. The genera included under the study are Braunsapis Michener, Heriades Spinola and Anthidellum Cockerell one species each, Thyreus Jurine and Halictus Latreille two species each, Amegilla Friese, Ceratina Latreille and Meghachile Latreille. five species each, Lassioglosum Curtis and Nomia Latreille 4 species each, Coelioxys Latreille 3 species and Xylocopa Latreille 10 species. All these species were collected while foraging on 22 different plant species. Each o f the specimens are described and illustrated. Keys are also given for their identification. All these species are useful to mankind as pollinators. Amegilla Friese pollinates Thumbe, Adathoda, Balsam; Cerantina Latreille pollinates cucumber, ridge guard and bitter guard and Xylocopa Latreille pollinates beans, ridge guard, glyricidia and ankola. Meghachile Latreille pollinates datura, kuphia, lakki, techoma and pongamia. The bee diversity was higher at Shimoga dist followed by Chikkamagalore and Kodagu dists.
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    ThesisItemOpen Access
    STUDIES ON SOME BEHAVIOURAL ASPECTS OF LITTLE BEE, Apis florea Fab. (HYMENOPTERA: APIDAE)
    (University of Agricultural Sciences GKVK, Bangalore, 2007-08-10) SHWETHA, B. V.; Gavi, Gowda.
    The present investigations were carried out to study the pasturage sources, melissopalynology, palynology, foraging distance, swarming and its prevention, absconding and post absconding behaviour in A. florea. Foraging activity of A. florea in comparison with A. cerana during different weather conditions and Pollinator fauna and abundance of A. florea in some selected plant species were also studied. Total of 147 plant species belonging to 48 families were found to be foraged by A. florea. Melissopalynological studies revealed that Cuphea micrantha, Cocos nucifera, Psidium guajava, Eucalyptus sp., Foeniculum vulgare, Mangifera indica, Pongamia pinnata, Peltophorum ferrugineum, Tamarindus indica, Callistephus chinensis and Brazil plant were dominant in the A. florea honey samples analysed from GKVK, Bangalore. Palynological investigations made on pollen loads of A. florea foragers revealed that Guizotia abyssinica, Helianthus annus, Anacardium occidentale, Mangifera indica, Punica granatum, Foeniculum vulgare, Burscera delpechiana, Mentha spicata, Nepeta cataria, Ocimum kilimandscharium, Raphanus sativus, Cuphea micrantha, Antigonon leptopus, Callistemon lanceolus, Eucalyptus sp., Simaruba glauca, Pongamia pinnata and Tamarindus indica are the dominant pollen types in GKVK campus. Swarm preparation was observed from November to March. Absconding was observed during February to March. Punching of queen and drone cells delayed the swarming process by 11- 98 days. After the desertion, workers from the same colony were found to return and collect the wax from the honey portion and upper periphery of the comb. A. cerana and A. florea were more active during bright sunny days than cloudy days. However A. cerana recorded higher activity than A. florea during sunny as well as cloudy days. Among the insects species visited flowers of radish, niger, rose apple and simaruba, A. florea was dominant.
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    ThesisItemOpen Access
    POLLINATORS ABUNDANCE WITH SPECIAL REFERENCE TO ROLE OF HONEYBEES IN SEED PRODUCTION OF CMS LINE OF PIGEON PEA, Cajanus cajan L.
    (University of Agricultural Sciences, Bangalore, 2009-07-10) RASHMI, T.; KUBERAPPA, G. C.
    Experiment was conducted at NSP, UAS, GKVK, Bangalore to study the insect pollinators abundance with special reference to role of honeybees in seed production of CMS line of pigeon pea UPAS – 120. Pigeon pea flowers were visited by thirty species of insect pollinators, of which twenty one species belong to order Hymenoptera, two to Diptera and four to Lepidoptera, one each to Coleoptera, Hemiptera and Thysanoptera. The members of the family Apidae of order Hymenoptera constituted 55.75 per cent compared to other pollinators (44.25%). The peak nectar foraging of honeybees on A line (CMS line) flowers was bimodal and it was at 1000 h to 1500 h. Similarly, the maximum pollen and nectar foraging activity on B line was at 1000 h and 1500 h of the day. The maximum time spent by honeybee species for nectar foraging on A line was recorded at 1000 h, whereas time spent varied from 1000 h to 1400 h for nectar foraging on B line. Similarly, maximum time spent for pollen foraging activity on B line was recorded at 1000 h of the day. On body body weight basis, pollen load carried by Apis cerana on B line was significantly high compared to A. florea and T. iridipennis whereas, higher pollen carrying efficiency was recorded in T. iridipennis, followed by A. florea and Apis cerana. The per cent pod set, pod length, pod weight, seeds per pod, seed size and seed weight was maximum in three bee visits per flower on both A and B line. Impact of different modes of pollination on yield parameters in pigeon pea A line (CMS line) as mentioned above including pod volume and germination per cent was maximum in open pollination, followed by A. florea, A. cerana and T. iridipennis pollination plot.