Effect of low light on yield and physiological attributes of rice

arroz caracteres de rendimiento chlorophylle chlorophylls clorofilas composante de rendement contenido de materia seca crop yield developmental stages dry matter content enzimas enzyme enzyme activity enzymes espiguilla etapas de desarrollo harvest index nitrate reductase nitrato reductasa ombrage proteine proteins rendement des cultures rendimiento de cultivos rice riz shading spikelets umbria yield components