TY - SER AU - Falqueto,A.R. AU - Cassol,D. AU - Magalhães Júnior,A.M.de AU - Oliveira,A.C.de AU - Bacarin,M.A. TI - Physiological analysis of leaf senescence of two rice cultivars with different yield potential KW - ARROZ KW - SENESCENCIA KW - FOLHA ER -