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De novo Regeneration of Fertile Common Bean (Phaseolus vulgaris L.) Plants
Albino Margareth M.C.,Vianna Giovanni R.,Falcao Rosana,Aragao Francisco J.L. The Korean Society of Plant Biotechnology 2005 Plant molecular biology and biotechnology research Vol.7 No.4
Common bean (Phaseolus vulgaris L.) plants were regenerated via organogenesis from mature embryonic axes, cultured on MS medium supplemented with ildole-3-ecetic acid (IAA) and thidiazuron (TDZ) for one week in the dark. Embryonic axillary regions were excised, longitudinally cut to split the both sides, and cultured for two weeks on MS medium supplemented with IAA and TDZ. The combination 0.5 mg $l^{-1}$ TDZ/0.5 mg $l^{-1}$ IAA presented the higher efficiency in shoot regeneration and the combination 0.5 mg $l^{-1}$ TDZ/0.25 mg $l^{-1}$ IAA presented the higher efficiency in conversion of shoots to plants. Regenerating explants were transferred to MS medium containing 1 mg $l^{-1}$ BAP for shoot development. All elongated shoots were rooted in vitro, presented normal phenotype and produced viable seeds. Histological analysis confirmed the mode of regeneration as de novo shoot organogenesis.