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20172
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Subject: Seed Science and Technology × End date: 2018 × Start date: 2017 × Type: Thesis × Thesis Type: Ph.D ×
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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.