Metabolic differentiation during seedling development of Piper species - Gaia, Anderson Melo; Silva, Renata Alves da; Floh, Eny Iochevet Segal; Colombo, Carlos A; Siqueira, Walter José; Kato, Massuo Jorge (Annual Meeting of the American Society of Pharmacognosy & the Phytochemical Society of North America, 2010)