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University of Agricultural Sciences, Dharwad

The University of Agricultural Sciences, Dharwad was established on October 1, 1986. The University has 5 Colleges, 27 Research Stations, 6 Agriculture Extension Education Centers, 6 Krishi Vigyan Kendras and ATIC. The University has its jurisdiction over 7 districts namely Bagalkot, Belgaum, Bijapur, Dharwad, Gadag, Haveri, and Uttar Kannada in northern Karnataka. Greater diversity exists in soil types, climate, topography cropping and farming situations. The jurisdiction includes dry-farming to heavy rainfall and irrigated area. Important crops of the region include sorghum, cotton, rice, pulses, chilli, sugarcane, groundnut, sunflower, wheat, safflower etc. The region is also known for many horticultural crops. Considerable progress has been registered in the field of education, research and extension from this University.

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Thesis Type: Ph.D × Subject: Crop Physiology ×
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Now showing 1 - 9 of 52
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    ThesisItemOpen Access
    Physiological Investigations of Reproductive Phases for Heat Tolerance in Chickpea (Cicer arietinum L.) Genotypes
    (University of Agriculture Sciences, Dharwad, 2018-07) Kiran B.A.; Chimmad V. P.
    Two season field experiments was carried out at Main Agricultural Research Station, Dharwad, during rabi 2016-17 and 2017-18 with five and twenty-two chickpea genotypes for evaluation of reproductive behaviour, protein profiling and productivity under different temperature regimes achieved by altering dates of sowing. High temperature significantly affected negatively the phenophases and thermal indices of the chickpea genotypes under D3 (46th SMW) temperature regime as compared to D1 (41st SMW) and D2 (43rd SMW). Among the genotype, JAKI-9218 was slow to initiate flower and pods, late in maturity and accumulated highest GDD, PTI and HUE for all the phenophases. The lipid peroxidation increased from 27.00 to 36.65 % with increase in the day/night temperature between D2 and D3 temperature regime at 30 days after 50% flowering. D1 and D2 temperature regimes recorded higher total number of flowers, pollen germination, pollen fertility, pollen density and fertile and sterile pollen diameter in all genotypes as compared to D3 temperature regime. Among genotypes JG-14 performance was superior in all parameters and under all dates of sowing. SDS-PAGE analysis of protein profiling in pollen grains showed production of additional polypeptides of MW 158.2-12.9 kDa and MW of 112.0-17.1 kDa in leaves appeared in chickpea genotypes. The D2 temperature regime recorded significantly higher values for seed weight, test weight, haulm weight, number of seeds and number of pods per plant with less flowers to pod ratio (3.08) and higher yield (2463 kg ha-1) while the genotype JG-11 (46 %), JG-14 (29 %),, Annigeri-1 (29 %) and KAK-2 (24 %) recorded a higher per cent increase in yield under D2 as compared D1 and D3. This study emphasised that fifteen days delayed sowing from normal date produced higher yield and the genotypes viz., Annigeri-1, JG-11, JG-14, JG-130, BGD-103 and RSG-44 were identified as high yielding temperature tolerant.
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    ThesisItemOpen Access
    SCREENING COTTON GENOTYPES (Gossypium spp.) FOR TOLERANCE TO DROUGHT USING LINE SOURCE SPRINKLER IRRIGATION TECHNIQUE
    (University of Agricultural Sciences, Dharwad, 2002) NINGANUR, B T; JANAGOUDAR, B. S
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    STUDIES ON PHYSIOLOGICAL PARAMETERS CONFERING HIGHER PRODUCTIVITY IN COTTON HYBRIDS AND THEIR PARENTS
    (University of Agricultural Sciences, Dharwad, 2001) ASHVATHAMA, V H; PATIL, B. C.
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    PHYSIOLOGICAL INDICES FOR HIGHER PRODUQIVITY IN GREENGRAM [Vigna radiata (L.) Wiiczek]
    (University of Agricultural Sciences, Dharwad, 2000) Goswami, Ratna Kinkor; Hiremath, S M
    Field experiments were conducted at Main Research Station University of Agricultural Sciences, Dharwad to find out the physiological indices for higher productivity in greengram genotypes..
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    ThesisItemOpen Access
    PHYSIOLOGICAL INDICES FOR HIGHER PRODUCTIVITY IN FOXTAIL MILLET [Sefaria Halica (L.) Beauv.]
    (University of Agricultural Sciences, Dharwad, 2000) Bhoite, Anilumar Govindrao; Chetti, M B
    "Field experiments were conducted at College of Agriculture University of Agriculturiil Sciences, Dharwad during kharif Sensons of 1998 and 1999 to find out the physiological indices for higher productivity in foxtail millet. Experiments were laid out in randomised block design with three replications on medium black soil under rainfed conditions. During kharif, 1998, 56 genotypes were screened for various moiphological, growth, phenological, yield and yield components. On the basis of results of first season experiment, seven genotypes each in low, medium and high yielding group along-with national check were subjected for detailed analysis o f physiological, biophysical, biochemical, nutritional and quality parameters. It was obsei'ved that the crop performance was better during kharif, 1998 as compared to kharif 1999 owing to better rainfall, but the behaviour of genotyjies did not change between the two years. Genotyjjes GPM-14, SIA-2652 and GPM-12 recorded significantly higher grain yield and these genotypes had more number of tillers and green leaves per plant, higher LA, leaf, stem, earhead and tolal dry matter. Among growlii parameters, LAI, LAD, CGR, RGIl, SLW and BMD were found to have significant positive conelation with grain yield. The higli yielding genotypes possessed higher stomatal frequency (abaxial), veinload fi-equency, photosynthetic rate, total chlorophyll content, NRA and stomatal conductance and moderate transpiration rate. Higher contents of crude protein, moisture and ash coupled with low fat, cmde fibre and carbohydrates and minimum cooking time with higher water imbibing capacity and grainy textural quality after cooking were evident in the high yielding genotyes. Tliey also had liighcr grain yield, panicle number i)cr plant, panicle length, grain number per panicle, 1000-grain weight and per day biomass and grain productivity. Results thus revealed that for higher productivity in foxtial millet, such traits can be incoiporated successfully in breeding for an ideal plant type."
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    ThesisItemOpen Access
    INTERACTION BETWEEN MATERNAL PARENT AND OFFSPRING OVER RESOURCE MOBILISATION INTO DEVELOPING SEEDS : PROXIMATE CAUSES AND ULTIMATE STRATEGIES
    (University of Agricultural Science, Dharwad, 1997) Ravishankar, K V; Uma Shankar, R
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    SALT TOLERANCE STUDIES IN COTTON (Gossypium spp.)
    (University of Agricultural Science, Dharwad, 1999) Rajgopal; Patil, B C
    "Investigation on salt tolerance in cotton was made with nine genotypes, belonging to Gossypium arboreum (AK 235, CIMA 302 and AKH 4) G. herbaceum (Jayadhar and Dhumad) and G. hirstum (JK-276-10-5, JK 345-3-3, LRA 5166 and AK 84635), under five salinity levels in pot and field conditions. The objective was to study the changes in physiological, biochemical parameters, yield potential and their relationship under varying salinity levels and finally to find out the mechanism of salt tolerance in cotton. The results showed that germination, shoot and root vigour index, leaf area and total dry matter (30 and 60 DAS) decreased with increase in salinity level. The relative decrease was lower in AK 235 and LRA 5166 as compared to other genotype. Stomatal density Increased while stomatal conductance, stomatal size, transpiration rate, photosynthetic rate and osmotic potential decreased with increase in salinity level. The genotype AK 235 showed lower reduction in these characters whereas maximum reduction was observed in AKH 4. Sodium content in stem and leaf increased with increase in salinity, while potassium and calcium content decreased. At higher salinity levels K/Na ratio was maintained in genotypes AK 235, AK 84635 and LRA 5166 by restricting Na+ uptake and increased K+ uptake in to the shoot indicating salt tolerance. In general, chlorophyll a, chlorophyll b, total chlorophyll content, soluble protein and catalase activity decreased with increase in salinity whereas, free proline, peroxidase activity and sugar content increased in all the genotypes. Seed cotton yield, total dry matter and leaf area at different stages of crop growth reduced with increase in salinitv. The higher mean salinity index, tolerance index and lower slope of regression for seed cotton yield and total dry matter at harvest in AK 235, LRA 5166, AK 84635 and Jayadhar indicated their suitability to salt stress conditions. Based on the study the genotypes AK 235, LRA 5166 and AK 84635 were found to be tolerant to salinity stress. Lesser reduction in germination, shoot and root vigour indices, photosynthetic rate, stomatal conductance, leaf area, total dry matter and chlorophyll content, maintenance of higher K/Na ratio and higher catalase and peroxidase activity at higher salinity levels can serve as selection criteria for identification of salinity tolerance at eariy stages of crop growth in cotton."
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    ThesisItemOpen Access
    "IMMUNOQUANTIFICATION OF PREDOMINANT CYTOKININS : ROLE OF CYTOKININ OXIDASE UNDER STRESS"
    (University of Agricultural Science, Dharwad, 1997) MANJUR, V; Sashidhar, V R
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    "INFLUENCE OF BRASSINOSTEROIDS ON GROWTH. DEVELOPMENT AND PRODUCTIVITY IN INFLUENCE OF BRASSINOSTEROIDS ON GROWTH. DEVELOPMENT AND PRODUCTIVITY IN CROP PLANTS"
    (University of Agricultural Science, Dharwad, 1998) VIVENCY, A J; PRASAD, T G
    ABSTRACT NOT AVAILABLE