The ratio of Fv/Fm is the most widely used for PSII efficiency indicator (Kramer et al. 2004) and describes the maximum quantum yield of the primary photochemical reaction (Maxwell and Johnson 2000).
The ratio of Fv/Fm is the mostwidely used for PSII efficiency indicator (Kramer et al. 2004)and describes the maximum quantum yield of the primaryphotochemical reaction (Maxwell and Johnson 2000).