Epidemiological aspects of leaf blight (Exserohilum turcicum) of sorghum, Sorghum bicolor (L.) moench

Abstract

Late appearance of symptoms (72 h after inoculation), minimum rate of lesion growth (0.056 cm2) and less number of spores (2.33 ml-3) are considered useful because genotypes with such traits could offer stability in resistance and be deployed in different environments. The parents and the hybrids, which confirm to the above conditions, are of paramount importance in this context. These were SPLB 94025A, SPLB 94025B, 296A among parents and SPLB 94025B × ICSR 90030 and 296A × A 2267-2 among hybrids. The latent period for sporulation inheritance (dominance/recessivity) was not consistent and appeared to be dependent on the genotype