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Subject: Seed Science and Technology × End date: 2018 × Type: Thesis × Thesis Type: Ph.D ×
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Now showing 1 - 9 of 48
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    ThesisItemOpen Access
    Seed Technological Investigations to Enhance Seed Yield, Quality and Storability in Onion (Allium cepa L.) cv. Arka Kalyan
    (University of Agricultural Sciences, Dharwad, 2017-07) Lamani, Koteshi; Deshpande, V.K.
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    ThesisItemOpen Access
    Influence of Provenances, Seed Forms, Storage Conditions and Packaging Materials on Seed Longevity in Groundnut
    (University of Agricultural Science, Dharwad, 2017-08) Sujatha M.; Uppar, D.S.
    The investigation was undertaken to know the influence of provenances, seed forms, storage conditions and packaging materials on seed longevity in groundnut. The results were analysed in CRD with factorial concept. The seed materials were produced at different locations viz., Dharwad, Bagalkot and Kumta during summer season of 2015-16 and stored during 2016-17 in their respective places under ambient condition and cold storage condition at cold storage unit Dharwad in HDPE bag, polylined gunny bag and vacuum packing in the form of pod and kernel for 12 months. Seed materials were collected bimonthly from respective places to assess the seed quality parameters in laboratory of Department of Seed Science and Technology and National Seed Project, University of Agricultural Sciences, Dharwad. The results revealed that the seeds produced in Bagalkot (L1) and stored as pod in vacuum packing under ambient and cold condition recorded significantly higher seed germination (68.00 and 69.75 %), seedling length (18.36 and 18.20 cm), seedling vigour index (1248 and 1270), seedling dry weight (231 and 245 mg), mobilization efficiency (6.21 and 6.53 %), oil content (47.59 and 47.88 %) and protein content (31.06 and 31.19 %), respectively at the end of 12 months of storage compared to other locations, seed forms and packaging material. Other seed quality parameters like electrical conductivity (0.929 and 0.776 dS/m), lipase activity (0.54 and 0.53 μ moles min-1), protease activity (0.262 and 0.245 U/ml), moisture content (7.05 and 7.31 %) were significantly lower throughout the storage period in the pods produced in Bagalkot and stored in vacuum packing under both ambient and cold condition respectively, compared to other treatments. Bagalkot is suitable for both production and storage of summer groundnut and the seeds stored in vacuum packing showed better storability under both storage conditions.
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    ThesisItemOpen Access
    tudies on Age of Seedlings, Fruit Retention Load, Shoot and Fruit Borer Control and Seed Invigoration Techniques to Enhance Seed Yield and Quality in Brinjal (Solanum melongena L.)
    (University of Agricultural Science, Dharwad, 2016-06) Bhanuje, Tejagouda; Raikar, S.D.
    The field experiments were conducted at farmer’s field Chinchali village, Rayabag taluka, Belagavi District, Karnataka during kharif 2014-15 and 2015-16 and laboratory experiment were conducted in Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 2014-15. The results revealed that, retaining all fruits for seed purpose recorded significantly higher seed yield (369 kg/ha) as compared to plucking initial formed 18 fruits of green stage for vegetable purpose and retaining remaining fruits for seed purpose. For seed production of brinjal, plucking initial formed 3 fruits of green stage for vegetable purpose and retaining remaining fruits for seed purpose compared to retaining all fruits for seed purpose was found to be most ideal as it registered on par test weight, number of seeds per fruit, seed yield with better quality parameters and an extra income of Rs. 14,395 per hectare was obtained. Among the foliar spray with insecticides, emamectin benzoate was most effective in suppressing the pest population as lowest mean per cent fruit infestation and seed damage was recorded after its application (15.50 and 12.33 % respectively) followed by flubandamide (16.71 and 13.09 %) and spinosad (18.17 and 14.93 %). Brinjal seeds primed with GA3 50 ppm and PEG @ 1.25 MPa and drying them back to their original moisture content needs to be practiced to obtain higher seed quality. The optimum yield with better quality seed can be obtained from the brinjal cv. Kudachi local when 35 days old seedlings were transplanted with GA3 @ 50 ppm growth regulator spray.
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    ThesisItemOpen Access
    Seed Technological Research on Hybrid Pigeon Pea (ICPH-2671)
    (University of Agricultural Science, Dharwad, 2016-06) Chandravathi B.; Gurumurthy R.
    The field and laboratory experiments were conducted to study the effect of pollination methods, planting ratio’s, insect attractants and morphological and molecular characterization of parental lines of hybrid pigeon pea ICPH-2671 at Seed Science and Technology, Department, College of Agriculture, University of Agricultural Sciences, Dharwad during kharif-2011 and 2015. Among pollination methods, P3: plant to progeny row selection recorded significantly the highest number of seeds per pod (4.23), hundred seed weight (12.01 g) and seedling vigour index (2963) as compared to P1: selfing and P2: random mating pollination methods. The treatment T2: insect attractant spray Bee-Q at the rate of 12.5 g/liter of water recorded significantly the highest number of seeds per pod (3.56 seeds /pod), seed yield per plant (62.68 g/plant), seed yield per plot (4.90 kg/plot) and seed yield per ha (2243.00 kg/ha), germination (93.39 %), shoot length (15.75 cm), root length (12.32 cm), seedling vigour Index (2627), seedling dry weight (0.91 g), hundred seed weight (12.19 g) and low electrical conductivity (0.39 dS/m) as compared to T1: control (Without insect attractant spray) in F1 hybrid ICPH-2671 seed production. Among the different planting ratio’s the P6: 5:2 and P5: 4:2 female to male planting ratio’s recorded significantly higher seed yield and quality as compared to P1: 3:1, P2 :4:1, P3:5:1 and P4:3:2 planting ratio’s in F1 hybrid ‘ICPH-2671’seed production. The study of morphological characterization of parental lines of the hybrid pigeon pea ‘ICPH-2671’ is useful for identification of off types in hybrid pigeon pea seed production mainly to carry out the rouging operation. In molecular markers characterization study the SSR primers CcM-0021 and CcM-1707 showed DNA amplification pattern between F1 hybrid and its parental lines of hybrid pigeon pea ‘ICPH-2671’ these primers can be employed for detection of genetic purity.
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    ThesisItemOpen Access
    STUDIES ON SEED PRODUCTION AND POST HARVEST TECHNIQUES IN CHILLI (Capsicum annuum L.)
    (University of Agricultural Sciences, Dharwad, 2002) HUNJE, RAVINDRANATH V; SHEKHARGOUDA, M
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    STUDIES ON THE SCOPE OF VEGETATIVE PROPAGATION IN SEED PRODUCTION OF HYBRIDS AND PARENTAL LINES OF RICE (Oryza sativa L.)
    (University of Agricultural Sciences GKVK, Bangalore, 1993) Vishakanta; mahadevappa, M
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    SEED STORABILITY, AGEING AND EFFECT OF PRE-SOWING TREATMENT ON THE PERFORMANCE OF SOME VEGETABLE CROPS
    (University of Agricultural Sciences GKVK, Bangalore, 1993) Jagadish, G V; mahadevappa, M
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    Seed Technological Approaches to Enhance Seed Yield and Quality In Perennial Fodder Sorghum (Sorghum bicolor L.)
    (University of Agricultural Science, Dharwad, 2015-06) Patil, Bapurayagouda; Merwade, M.N.
    The field experiments were conducted at Main Agricultural Research Station, Dharwad during kharif 2012-13 and 2013-14 and laboratory experiment were conducted in Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 2013-14. The results revealed that, the inter row spacing of 30 cm recorded significantly higher seed yield (657.6 kg ha-1) as compared to 45 and 60 cm row spacings. In contrary, inter row spacing of 60 cm recorded significantly higher seed quality parameters as against to other row spacings. Application of 150:60:40 NPK kg ha-1 significantly higher seed yield (641.6 kg ha-1) and seed quality parameters. Whereas, the treatment combination of 30 cm row spacing and 150:60:40 NPK kg ha-1 recorded higher seed yield. The early sowing of crop in July IV week recorded significantly higher seed yield (593.4 kg ha-1), seed germination (39.67%) and seedling vigour index (1065) as compared to later sowings. The intra spacing of 45 x 10 cm recorded higher seed yield (492.4 kg ha-1) as against 45 x 15 and 45 x 20 cm spacings. The combination of July IV week sowing and 45 x 10 cm intra row spacing recorded higher seed yield (598.8 kg ha-1) as compared to other treatment combinations. Among the number of cuttings, uncut crop (control) recorded significantly maximum seed yield (576.4 kg ha-1), seed germination (40.00%) and seedling vigour index (1126) as compared to one, two, three and four cuttings. Seeds treated with KNO3 @1.0 % for 2 hrs found effective in breaking seed dormncy of perennial fodder sorghum cv. CoFS-29. It was recorded significantly higher seed germination (82.33%), seedling vigour index (2303), lesser dormant seeds (5.67 %) and dead seeds (7.00%) at the end of ten months of storage period which was followed by Thiourea @1.0 % for 2 hrs.
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    ThesisItemOpen Access
    OPTIMIZATION OF HARVEST AND POST-HARVEST TECHNIQUES IN HYBRID MAIZE (Zea mays L.) SEED PRODUCTION
    (University of Agricultural Science, Dharwad, 1995) Shankara, A N; Javare Gowda, S
    ABSTRACT NOT AVAILABLE