00637naa a2200193 a 450000100080000000500110000800800410001910000280006024501050008826000090019365300210020265300350022365300210025870000180027970000210029770000250031870000160034377300840035911093202013-07-15       2013    bl uuuu     u00u1 u    #d1 aSILVA J??NIOR, J. M. da  aChanges in anatomy and chlorophyll synthesis in orchids propagated in vitro in the presence of urea.  c2013  aCultivo in vitro  aFonte de nitrog??nio org??nico  aLaelia purpurata1 aRODRIGUES, M.1 aCASTRO, E. M. de1 aBERTOLUCCI, S. K. V.1 aPASQUAL, M.  tActa Scientiarum. Agronomy, Maringa, PRgv. 35, n. 1, p. 65-72, jan./mar. 2013.