Effect of Concentrations of Gibberellic Acid in Breaking Dormancy of Different Potato (Solanum tuberosum) Varieties at Rasuwa, Nepal | OMICS International | Abstract
ISSN: 2329-8863

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Effect of Concentrations of Gibberellic Acid in Breaking Dormancy of Different Potato (Solanum tuberosum) Varieties at Rasuwa, Nepal

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The experiment entitled “Effect of concentrations of Gibberellic acid in breaking dormancy of different potato (Solanum tuberosum) varieties at Rasuwa” was conducted in Dhunche, Rasuwa, Nepal from 2nd May to 15th June, 2017. Uniform sprouting is always a challenge to achieve. To address the problem a two factorial experiment based on completely randomized block design with four replications was conducted to investigate the effect of Five hormone treatments (H1: 0.5% of ethanol + 0 mg/l of gibberellic acid, H2:0.5% of ethanol + 5 mg/l of gibberellic acid, H3: 0.5% of ethanol + 10mg/l of gibberellic acid, H4: 0.5% of ethanol + 15mg/l of gibberellic acid, H5: 0.5% of ethanol + 20 mg/l of gibberellic acid) on mini tubers of two varieties of potato (Khumal Seto-1 and MS-42,3). The longest sprouts were about 17.34mm long and they were produced by MS-42.3 variety and in case of treatment5 the highest sprout length as 10.8125mm. The highest no of sprouts were obtained in MS-42.3 6.05 at Treatment 5 and the highest no of sprouts in Khumal seto-1 was 4.75 at treatment 5. Khumal Seto-1 had the shortest dormancy duration as well as days to first emergence at lab condition. Applying H3 hormone level produce more sprouts per tuber in Khumal Seto-1. MS-42.3 was better than Khumal Seto-1with or without hormone treatment in respect of all measured traits. Higher GA concentration accelerates tuber sprouting in both varieties. Except in dormancy break and days to first emergence all parameters observed i.e. Average Sprout Length and Average Sprout Density variety MS-42.3 was found superior in accordance to gibberellic treatment.