Stalk rot resistant sorghum genotypes are resilient to pathogen-mediated photosystem II quantum yield retardation

Globally, stalk rots are among the highest priority grain sorghum (Sorghum bicolor (L.) Moench) diseases. This study examined the variation of leaf chlorophyll index and photosystem II quantum yield (Fv/Fm ratio) of sorghum genotypes after inoculation with two stalk rot fungi. In 2014, 2015, two resistant and two susceptible sorghum genotypes were evaluated in the field. Fusarium thapsinum (FT) and Macrophomina phaseolina (MP) are fungal...