TY - SER AU - Peters,J.E. AU - Crocomo,O.J. AU - Sharp,W.R. TI - Effect of caffeine and nicotine on the callus growth and root morphogenesis of Phaseolus vulgaris tissue cultures KW - FEIJAO KW - PHASEOLUS VULGARIS KW - RAIZ KW - NICOTINA KW - CAFEINA KW - CRESCIMENTO KW - EXPLANTE KW - BROTACAO INDUZIDA ER -