Browsing by Author "CHIKKASUBBANNA, V."
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ThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM BER FRUITS {Zizyphus mauritiana Lamk.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2000-11-11) BHASKAR, V.; CHIKKASUBBANNA, V.ThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM CARROT (Daucus carota L.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2000-09-29) SOWMYA, L.; CHIKKASUBBANNA, V.ThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM JAMAICAN CHERRY {Muntingia calabura L.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK ,BANGALORE, 2007-09-10) PRADEEP KUMAR, C.M; CHIKKASUBBANNA, V.No AbstractThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM MUSKMELON FRUITS {Cucumis melo L.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2002-01-01) YOGESHA, H.R.; CHIKKASUBBANNA, V.ThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM WATERMELON FRUITS (Citrullus lanatus, Thunb)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 1999-08-28) PRASANNA, K. M.; CHIKKASUBBANNA, V.ThesisItem Open Access DEVELOPMENT OF VALUE ADDED PRODUCTS FROM WATERMELON FRUITS (Citrullus lanatus, Thunb)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 1999-08-28) PRASANNA, K. M.; CHIKKASUBBANNA, V.ThesisItem Open Access EFFECT OF CHEMICAL FLORAL PRESERVATIVES ON VASE LIFE OF CUT FLOWERS OF GERBERA CULTIVARS(University of Agricultural Sciences, Bangalore, 2010-07-02) AMITH, R.; CHIKKASUBBANNA, V.The present study was conducted at Department of Horticulture, University of Agricultural Sciences, GKVK campus, Bengaluru, during 2009-10 to evaluate the vase life of ten different gerbera cultivars viz., Esmora, Shangria, Winter queen, Ambra, Dana Ellen, Goliath, Sun city, President, Mammut and Sun way using different treatment combination. Observations were recorded for water uptake, water loss, water uptake: water loss ratio, water balance, fresh weight and vase life. Among the cultivars evaluated, Ambra, Mammut and Winter queen showed maximum vase life whereas, cultivars President, Sun city and Sun way showed optimum vase life. However cultivars Dana Ellen, Goliath, Shangria, Esmora showed comparatively less vase life. In many of the cultivars tested, treatment 300ppm Sodium benzoate +6% sucrose + 400 ppm 8-HQS showed better results followed by 200ppm Sodium benzoate +4% sucrose+ 100ppm Silver thiosulphate + 200 ppm 8-HQS with respect to water uptake, water loss, fresh weight which ultimately led to increase in vase life of 14 days and 10.43 days respectively when compared to control (6.23 days). Present study revealed that among different chemical combinations tested, treatments with chemicals viz, sodium benzoate, silver nitrate, sucrose and 8-HQS showed promising influence on vase life of cut gerbera flowers.ThesisItem Open Access Enhanced stevioside production from in vitro cultures of stevia (Stevia rebaudiana Bert.)(University of Agricultural Sciences GKVK, Bangalore, 2007-02-07) BABU, P.; CHIKKASUBBANNA, V.The experiment on ‘Enhanced stevioside production through in vitro cultures of stevia (Stevia rebaudiana Bert.)’ was carried out at the Plant Tissue Culture Laboratory, Division of Horticulture, UAS, GKVK, Bangalore. Stevia (Stevia rebaudiana Bert.) is a herbaceous perennial plant belonging to Asteraceae family and stevioside, principal diterpene glycoside a boon to diabetics. Plant tissue culture is a viable alternative to traditional agriculture for industrial production of secondary metabolites. Preliminary investigations on media composition, strength of medium, sources of carbon and concentrations of growth regulators, effects of photoperiod and liquid culture and use of precursor in elicitation were studied on callus induction, biomass and stevioside production. In the plant system, leaf contains 9.22 per cent, stem has 3.27 per cent and the root has very negligible amount of stevioside. Half MS medium was better in callus induction and sucrose at 3 per cent produced higher fresh and dry weight of callus and that was supported by its consumption. Friable yellow coloured callus was obtained in all the treatments containing 2, 4-D. IAA produced compact green and NAA green but slightly light coloured callus but with BAP in all the cases improved glossiness and viability. NAA with no cytokinins produced maximum fresh weight while, 1.5mg/l IBA + 0.1mg/l BA produced maximum dry weight. However, IBA could not induce callus formation and stevioside synthesis by its own but with BA it was able to do so with a maximum stevoside production (12.39%). The effects of photoperiod on TSS, chlorophyll and stevioside content reveal that they were directly proportional and stevioside synthesis was maximum with longer day length. In liquid culture, GA3 produced a maximum amount of 13.88 per cent and Rhamnose to the tune of 14.44 per cent stevioside, amounting to 1.3 and 1.56 times that of stevia plants, respectively.