EFFECT OF POST-HARVEST TREATMENTS ON RIPENING CHANGES IN SAPOTA CULTIVARS 'KALIPATTI' AND 'CRICKET BALL'
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Date
1989
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AAU, Anand
Abstract
With the objectives of retarding the process of ripening and to extend the shelf life of sapota fruits of cvso 'Kalipatti' and 'Cricket Ball' through post harvest dip treatment with GA 300 ppm, Kinetin 100 ppm and Silver Nitrate 40 ppm at ambient temperature, experiments were conducted at the Laboratories of Department of Horticulture, Gujarat Agricultural University, Anand Caifipus, Anand during 1988, The results revealed that GA 300 ppm was very effective and delyed the ripening by 2.5 days followed by kinetin 100 ppm and silver nitrate 40 ppm being 1.5 and 1.0 days respectively compared to control. Post harvest treatments of sapotas with GA, kinetin and silver nitrate reduced the rates of ethylene production and respiration and retarded the activities of catalase and pectin methyl esterase and slowed down the starch hydrolysis and thus helped in prolonging shelf life of fruits. However, in untreated sapota fruits, ripening was characterised by rapid loss in texture and fruit weight. Fruit tissues exhibited higher, metabolic rates as evidenced by increased rates of respiration, ethylene production and activities of catalase and pectin methyl esterase.
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HORTICULTURE, AGRICULTURE, A STUDY