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High frequency in vitro regeneration ofKigelia pinnata L. via organogenesis

한국식물학회지 2004년 47권 1호 p.48 ~ 51
 ( Puthur Jos T. ) - St. Thomas College Postgraduate and Research Department of Botany

 ( Thomas T. Dennis ) - St. Thomas College Postgraduate and Research Department of Botany

Abstract


An effective and reproducible protocol for the micropropagation ofKigelia pinnata L through high frequency callus regeneration is described. Seeds were surface sterilized before culturing on Gamborgs basal medium (B5 medium). After two weeks the cotyledonary node along with a portion of the hypocotyl were carefully excised from well-developed embryos and subcultured on B5 medium supplemented with different concentrations of 2,4-D and BAR The cultured cotyledonary node expiants showed callus formation at the base of the lower cut end of the hypocotyl. This callus showed shoot initiation after two weeks of subculture on the regeneration medium supplemented with various concentrations of BAP alone or in combination with NAA. The highest number of shoot regeneration occurred on medium containing 5 γM BAP and 0.1 γM NAA. The optimum rooting of the regenerated shoots was observed on 1/2B5 medium supplemented with 4 γM IBA. Micropropagated plants were successfully established in soil in field condition with a survival frequency of 100%.

키워드

acclimatization; bignoniaceae; Kigelia pinnata; micropropagation; rooting
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