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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: 2009 ×
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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
    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.
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    ThesisItemOpen Access
    EVALUATION OF LEARNING EFFICIENCY IN Apis mellifera WITH RESPECT TO TIME AND AGE
    (University of Agricultural Sciences, Bangalore, 2009-09-12) ARAVIN, CHAKRAVARTHI; Bhat, N.S.
    Experiments were performed to determine the circadian influence and effect of age on honey bee learning. Along with the above said major objective, associated issues such as odor preference, influence of time on the honey bee sucrose responsiveness, individual variation in learning with time were addressed. Two species of bees were used in the study viz. Apis cerana and Apis mellifera. The results revealed that acquisition performances in Apis cerana was very poor which was in contrast to Apis mellifera which exhibited significant acquisition performances. Hence forth all the objectives were addressed using Apis mellifera as the model system. The results revealed that there is significant effect of time on learning in bees which led to formulation of Scattered and focused attention hypothesis for the strength of learning and the results were not significant for sucrose responsiveness, effect of age on learning and odor preferences. Individual variation in learning was found to vary with time points. And greater variation was found during early morning.
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    ThesisItemOpen Access
    STUDIES ON NON-APIS BEE FAUNAL DIVERSITY OF MYSORE DISTRICT.
    (University of Agricultural Sciences, Bangalore, 2009-07-15) DHANYAVATHI, P. N.; BHAT, N. S.
    The study on faunal diversity of Non- Apis bees (Super family: Apoidea) in and around Mysore district revealed 55 species in 16 genera under 3 families viz., Apidae, Halictidae and Meghachilidae and 6 sub-families viz., Apinae, Xylocopinae, Halictinae, Nominae, Nomioidinae, and Meghachilinae. The genera included under the study are Amegilla Friese, Thyreus Jurine, Braunsapis Michener, Ceratina Cockrell, Xylocopa Latreille (Apidae); Halitus Latreille, Lasioglossum Curtis, Nomia latreille, Nomioides Schenck (Halictidae); Coelioxys Latreille, Megachile Latreille, Heriades Spinola, Eoanthidium Popov, Anthidium Fabricius and Euaspis Gerstaecker (Megachilidae). Each of the specimens were described and illustrated. Keys were also given for their identification. All these species were collected while foraging on 24 plant species belonging to 13 families. Foraging activity was more during bright sunshine hours. Some of these species are useful to mankind as pollinators. The family Verbenaceae attracted the highest number of bee species (19) followed by five plant species of Fabaceae (12) and a single species of bee was collected in one species of Cucurbitaceae. Among the different species of plants, Leucas aspera (Willd.) attracted 12 bee species belonging to six genera; Stachytarpheta indica L. attracted 11 species of bees belonging to five genera, Cuphea hyssopifolia Kunth attracted eight species of bees belonging to six genera, followed by Duranta erecta L. which attracted seven species of bees belonging to five genera and Tridax procumbens L., attracted six species of bees belonging to five genera.
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    ThesisItemOpen Access
    POLLINATION POTENTIALITY OF HONEYBEE SPECIES IN RIDGE GOURD (Luffa acutangula L.)
    (University of Agricultural Sciences, Bangalore, 2009-07-05) RAMESH, R.G.; KUBERAPPA, G. C.
    The floral biology, insect pollinators and their abundance, quantity and quality o f nectar, foraging activity, number o f bee visits and stigmatic receptivity and impact o f different modes o f pollination on quantitative and qualitative parameters in ridge gourd varieties viz., Arka sumeet and Arka sujath was studied at Division o f Horticulture, UAS, GKVK, Bangalore during 2007. Twentyone insect species were found during flowering period. Among them, honeybees constituted about 78.90 per cent o f the total population. The quantity o f nectar gradually increased with the advancement o f time and reach maximum at 0900 h in both staminate and pistillate flowers. The maximum foraging activity o f A cerana indica was observed at 0900 h and at 1000 h in case o f A. florea and T. iridipennis, ceased at 1600 h in both varieties. The time spent for foraging on pistillate flowers was maximum compared to staminate flowers. The higher fruit set, fruit weight, fruit volume, fruit length, number o f sound seeds per fruit and test weight o f seeds was recorded, when the number o f bee visits were eight per flower. The stigmatic receptivity was maximum at 0900 h and there was no fruit set in control plot. The maximum fruit set, fruit weight, fruit volume, number of sound seeds, test weight o f seeds, moisture content and germination per cent was recorded in hand pollination at 0900 h, whereas the maximum fruit length, ash content was recorded in open pollination. The total soluble sugar was 8 to 10 per cent in all modes of pollination.
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    ThesisItemOpen Access
    POLLINATORS DIVERSITY WITH SPECIAL REFERENCE TO ROLE OF HONEY BEES IN QUANTITATIVE AND QUALITATIVE IMPROVEMENT OF CUCUMBER, Cucumis sativus L.
    (University of Agricultural Sciences GKVK, Bangalore, 2010-07-05) KHAJA RUBINA, S.; KUBERAPPA, G. C.
    Pollinators diversity with special reference to role of honey bees in quantitative and qualitative improvement of cucumber, Cucumis sativus L. var Hassan Local was carried out during 2010 at vegetable seed production plot, Division of Horticulture, University of Agricultural sciences, GKVK, Bangalore. At flowering stage, cucumber was visited by twenty eight species of insects, of which twenty species belonged to Hymenoptera, two to Diptera, four to Lepidoptera and two to Coleoptera. Of the total pollinators visited cucumber, honey bees constituted 84.88 per cent, whereas other pollinators constituted 15.11 per cent. The peak pollen and nectar foraging activity was observed between 1100 to 1300 h. The quantity of nectar and total soluble sugar was gradually increased with the advancement of the time and reached maximum at 1500 h in both male and female flowers. The percent flower drop, fruit set, fruit weight, fruit volume, fruit length, number of seeds/ fruit and seed weight were maximum in ten bee visits per flower. Impact of honey bees pollination on quantitative and qualitative parameters in cucumber such as per cent flower drop, fruit set, fruit weight, fruit volume, fruit length, number of seeds/fruit, seed weight, moisture content, ash content, germination percentage and seedling vigour index were maximum in open pollination plots, followed by plots caged with A.cerana, A.florea and T.iridipennis.