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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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20131
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Subject: Crop Physiology × Author: Arun Vasant Mane ×
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    ThesisItemOpen Access
    Influence of 1-methylcyclopropene (1-mcp) on post harvest physiology and physico-chemical changes in alphonso mango (mangifera indica l.)
    (UASD) Arun Vasant Mane; M. B. Chetti
    Investigation were carried out to find out the influence of 1-MCP (1- methylcyclopropene) on physical, physiological and physico-chemical changes and ripening behaviour in Alphonso mango (Mangifera indica L.) during 2011 and 2012 at the Department of Agril.Botany, College of Agriculture, Dr.BSKKV, Dapoli. The experiment consisted of 16 treatment combinations comprising 4 concentrations of 1-MCP and 4 storage conditions. Results revealed that fruits ripened early under ambient condition without 1-MCP treatment. Fruits under cold storage with 2000 ppb of 1-MCP exhibited significantly longer retention of green colour, firm texture and slow rate of loss in physiological weight, thereby delaying ripening compared to ambient condition. Total soluble solids, total sugars, reducing sugars increased and vitamin-A, titratable acidity and ascorbic acid content decreased rapidly until 14 DAT (days after treatment) under control and 21 days under cold storage with 2000 ppb of 1-MCP. There was a gradual rise in ethylene production till 14 DAT followed by decline at 21 DAT under ambient condition. The rate of fruit respiration was significantly higher under ambient condition compared to other treatments and the lowest was recorded in cold storage with 1-MCP (2000 ppb). Cold storage with 1-MCP showed gradual increase in total carotenoids till the end of storage period as against rapid increase under ambient condition. Ambient condition recorded maximum number of spongy affected fruits and the lowest was noticed with higher concentration of 1-MCP (2000 ppb) in cold storage. There was a constant degradation of chlorophyll under ambient condition throughout the study period; while, cold storage with 2000 ppb 1-MCP maintained significantly higher values till 26 DAT. The present findings clearly establish that cold storage with 1-MCP @ 2000 ppb holds a great potential in delaying fruit ripening ultimately prolonging the post harvest storage and shelf life by 10 – 12 days.
  • Thumbnail Image
    ThesisItemOpen Access
    Influence of 1-methylcyclopropene (1-mcp) on post harvest physiology and physico-chemical changes in alphonso mango (mangifera indica l.)
    (UAS Dharwad, 2013) Arun Vasant Mane; M. B. Chetti
    Investigation were carried out to find out the influence of 1-MCP (1- methylcyclopropene) on physical, physiological and physico-chemical changes and ripening behaviour in Alphonso mango (Mangifera indica L.) during 2011 and 2012 at the Department of Agril.Botany, College of Agriculture, Dr.BSKKV, Dapoli. The experiment consisted of 16 treatment combinations comprising 4 concentrations of 1-MCP and 4 storage conditions. Results revealed that fruits ripened early under ambient condition without 1-MCP treatment. Fruits under cold storage with 2000 ppb of 1-MCP exhibited significantly longer retention of green colour, firm texture and slow rate of loss in physiological weight, thereby delaying ripening compared to ambient condition. Total soluble solids, total sugars, reducing sugars increased and vitamin-A, titratable acidity and ascorbic acid content decreased rapidly until 14 DAT (days after treatment) under control and 21 days under cold storage with 2000 ppb of 1-MCP. There was a gradual rise in ethylene production till 14 DAT followed by decline at 21 DAT under ambient condition. The rate of fruit respiration was significantly higher under ambient condition compared to other treatments and the lowest was recorded in cold storage with 1-MCP (2000 ppb). Cold storage with 1-MCP showed gradual increase in total carotenoids till the end of storage period as against rapid increase under ambient condition. Ambient condition recorded maximum number of spongy affected fruits and the lowest was noticed with higher concentration of 1-MCP (2000 ppb) in cold storage. There was a constant degradation of chlorophyll under ambient condition throughout the study period; while, cold storage with 2000 ppb 1-MCP maintained significantly higher values till 26 DAT. The present findings clearly establish that cold storage with 1-MCP @ 2000 ppb holds a great potential in delaying fruit ripening ultimately prolonging the post harvest storage and shelf life by 10 – 12 days.