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1993 - 199969
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Subject: Seed Science and Technology × End date: 1999 × Start date: 1993 ×
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Now showing 1 - 9 of 69
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    ThesisItemOpen Access
    STUDIES ON SCREENING AND DETERMINATION OF SUITABLE PACKAGING FOR BULK GROUNDNUT (Arachis hypogaea L.) SEED POD STORAGE
    (University of Agricultural Sciences, Dharwad, 1997) KRISHNAPPA, N; NARAYANASWAMY, S
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    EFFECT OF PLANTING RATIOS AND NITROGEN LEVELS ON GROWTH, SEED YIELD AND QUALITY OF DHARWAD SORGHUM HYBRID-3 (Sorghum bicolor L. Moench)
    (University of Agricultural Sciences, Dharwad, 1999) I A, VEERANAGOUDAR; SHEKHARGOUDA, M
    The field experiment with four planting ratios (female to male) viz., 2:1, 3:1, 2:2 and 4:2 and three nitrogen levels viz., 100,125 and 150 kg per hectare revealed that the planting ratio did not significantly influence the plant height, leaf number and leaf area of the parental lines of DSH-3 sorghum hybrid, where as, higher doses of nitrogen increased the plant height, number of leaves and leaf area. The significant reduction in 50 percent flowering with 150 kg N per ha was observed in both the parental lines. Higher hybrid seed yield was obtained with 2:1 planting ratio compared to other planting ratios mainly due to increased ear length (23.7 cm), ear width (4.0 cm), ear weight (33.2g ), number of seeds per ear (374), threshing percentage (34.2), seed set(44.5%) and 1000 seed weight (11.48 g). Increase in the nitrogen level from 100 to 150 kg N per ha increased hybrid seed yield from 573.1 kg to 800 kg per ha and it is due to increased values for ear length (22.6 to 23.3 cm), ear width (3.4 to 3.9 cm ), ear weight (30.0 to 32.1g), number of seeds per ear (282.2 to 327.0 ), threshing percentage (27.9 to 32.0), seed set (32.7 to 40.6%), and 1000 seed weight (29.30 to 31.8 g ). The planting ratios did not significantly influence the germination, shoot length, root length and vigour index. While, the germination percentage increased by 3 percent with the application of 150 kg N per ha. The other seed quality attributes like shoot and root length, seedling dry weight and vigour index increased significantly due to additional doses of nitrogen application. The interaction effects due to planting ratios and nitrogen levels were non-significant for all the characters.
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    ThesisItemOpen Access
    INFLUENCE OF PROVENANCE ON SEED QUALITY AND STORABILITY IN DCH-32 HYBRID COTTON
    (University of Agricultural Sciences, Dharwad, 1999) S M, SHARANAPRASAD; KURDIKERI, M B
    Studies on influence of provenance on seed quality and storability in DCH-32 hybrid cotton were made in the Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 1998. Freshly harvested seeds of DCH-32 hybrid cotton produced during Kharif 1998 were collected from 18 talukas belonging to five agro-climatic zones through the Kamataka State Seed Certification Agency, Bangalore. The initial seed quality parameters viz., 100 seed weight, germination, seedling length, vigor index, seedling dry weight and field emergence were better with- lower moisture content and electrical conductivity in seeds produced in Gadag, Bagalkot, Koppal, Kustagi and Ron talukas of Northern dry zone, Manvi taluka of North Eastern dry zone and Sira taluk of Central dry zone. While, all these seed quality parameters were lower with higher moisture content and electrical conductivity in seeds of Chintamani and Srinivasapur talukas of Eastern dry zone and Hiriyur taluka of Central dry zone. The storability studies indicated that seeds produced in Gadag, Bagalkot, Koppal, Kustagi and Ron talukas of Northern dry zone, Manvi taluka of North-Eastern dry zone and Sira taluk of Central dry zone stored under ambient conditions in cloth bags maintained the germination above the seed certification standard (65%) upto 10'*' month of storage with high seedling parameters. While, seeds of Srinivasapur and Chintamani talukas of Eastern dry zone and Hiriyur taluka of Northern dry zone maintained viability only for six months. Among different storage containers satisfactory germination was maintained up to 10th month in seeds stored in polythene bag and high density polyethylene bag and for eight months in seeds stored in cloth and gunny bags.
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    ThesisItemOpen Access
    SEED TECHNOLOGICAL INVESTIGATIONS IN NATURALLY COLOURED COTTON GENOTYPE, DDCC-1
    (University of Agricultural Sciences, Dharwad, 1999) M, RADHAKRISHNA MAIYA; GOWDA, BASAVE
    Investigations on standardisation of isolation distance, effect of foliar spray of chemicals and stages of picking on seed yield and quality and standardisation of sieve size for seed grading of naturally coloured cotton genotype, DDCC-1 were carried out at Agricultural Research Station, Dharwad during the year 1998-99. The studies on isolation distance indicated that a distance of 7 m from colour cotton plots is found to be sufficient to produce genetically pure seeds. Results of foliar spray of chemicals indicated that, spraying of DAP @ 2% had resulted m significantly highest plant height, sympodial branches and number of bolls per plant followed by NAA (20 ppm) and cytozyme (0.1%). Foliar spraying of NAA significantly increased the seed yield followed by DAP, cytozyme and CUSO4. Spraying of growth regulators and nutrients also significantly influenced the seed quality parameters. Significantly higher germination, shoot length, root length, field emergence and vigour index were observed in plants sprayed with NAA followed by cytozyme and DAP. The stages of picking showed significant influence on number of bolls harvested per plant, mean boll weight, seed index and number of seeds per boll and seed weight. All these parameters were significantly higher in first picking followed by second and third picking and nearly 89.0 per cent of seed yield was contributed by the first two pickings. Picking stages were significantly influenced the seed quality parameters. In general, first picking seeds recorded significantly higher germination, field emergence, root and shoot length and seedling vigour compared to second and third picking seeds. The studies on size grading indicated that, seed grading with 4.75 mm (R) sieve gave higher seed recovery (86.75%), germination (82.04%), field emergence (65.0%)), root length (12.63 cm), shoot length (8.78 cm) and seedling vigour index (1752).
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    ThesisItemOpen Access
    STUDIES ON PHYSIOLOGICAL MATURITY AND SEED PRODUCTION TECHNIQUES IN OKRA [Abelmoschus esculentus (L.) Moench]
    (University of Agricultural Sciences GKVK, Bangalore, 1994) Chandrashekara Bhat, P; Venkata Reddy, D M
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    EFFECT OF BORON ON SEED YIELD AND QUALITY PARAMETERS IN SUNFLOWER POPULATIONS, BSH-I AND ITS PARENTS
    (University of Agricultural Sciences GKVK, Bangalore, 1993) Shivaraju, G; Chikkadevaiah
    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
    EFFECT OF GA3 AND CYCOCEL ON MATURITY, SEED YIELD AND QUALITY IN CHINA ASTER [Callistephus chinensis (L.) Ness.]
    (University of Agricultural Science, Dharwad, 1995) Shetty, Shivaprasad; Venkata Reddy, D M
    ABSTRACT NOT AVAILABLE