TY - SER AU - Naguib,N.Y. AU - Khalil,M.Y. AU - El-Sherbeny,S.E. TI - The influence of indole acetic acid, phenylalanine and methionine on the growth, amino acid and alkaloid production of periwinkle (Catharanthus roseus. G. Donn) plants KW - Alkaloids KW - Plant tissue culture KW - Amino acid KW - Medicinal plants KW - Catharanthus roseus KW - Fertilization KW - Aromatic plants KW - Physiology N1 - Includes references N2 - Two field trials were conducted at the Experimental Farm of Medicinal and Aromatic Plants of the NRC, Dokki, Giza, Egypt, during the two successive seasons 1998 and 1999. Cultivation of the seeds of Catharanthus roseus G. Don. in the nursery was performed on 14th of February then transplanted on 15th of April in both seasons. The trials included three times of foliar application of indole acetic acid (IAA), phenylalanine or methionine at 50 or 100 ppm levels on the plants UR - http://nile.enal.sci.eg/EALE/2003/BFACU/5403/3/217.pdf ER -