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Effect of Plant Growth Regulators on in vitro Micropropagation of Colored Calla Lily(Zantedeschia spp.)  

Lee Young Soon (Kyonggi Agricultural Research & Extension Services)
Ko Jeong Ae (Horticultural Science Major, Faculty of Biological Resources Sciences, College of Agriculture, Chonbuk National University)
Publication Information
Korean Journal of Plant Resources / v.18, no.1, 2005 , pp. 154-160 More about this Journal
Abstract
To establish rapid micropropagation through organogenesis from apices-derived callus or direct adventitious shoot of three calla lily cultivars(Zantedeschia spp, cv. Sunlight, cv. Chiante, cv. Pink Persuation) were cultured on Murashige and Skoog medium supplemented with different plant growth regulators. The formation rate of callus, organogenesis and in viかo tuber production among the three cultivars were tested. Callus was obtained from cvs. Sunlight, Chiante and Pink Persuasion; the best cultivar was Sunlight. Sunlight induced $53.3\%$ callus and Chiante had the highest rate of $56.7\%$ direct shoot regeneration on medium with 2.0 mg/L BA. Regeneration frequencies ranged from 20 to $70\%$ on medium with 2.0-3.0 mg/L BA. The highest percentage of regeneration and the greatest number of shoots were obtained on medium containing 3.0 mg/L BA in three cultivars. Cytokinins induced multiple shoot formation; 1.0 mg/L of 2ip, 5.0 mg/L of BA, and 1.0 m/L of BA induced 16, 14 and 12 multiple shoots in cvs. Sunlight, Chiante and Pink Persuasion, respectivly. 1.0 mg/L of IAA enhanced root growth in cvs. Sunlight and Chiante while cv. Pink Persuasion exhibited enhanced root growth at 2.0 mg/L of IBA. NAA, however, induced no change in root growth. The addition of 90 g/L sucrose enhanced in vitro tuber formation and following tuber expansion in cv. Sunlight, while 70 g/L of sucrose was effective in cvs. Chiante and Pink Persuasion.
Keywords
adventitious shoot formation; growth regulators; in vitro culture; sucrose; tuberization;
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