were evaluated for quantitative measurement of partial physiological resistance to sheath blight under controlled conditions using detached tiller method.
Three independent experiments, each involving three replications, were conducted. Seven days after inoculation, the following disease variables were measured: number of lesions, lesion length, vertical sheath colonization (VSC) on the tiller, disease severity, relative vertical sheath colonization (RVSC) and survival of the leaf blade.
Variation between rice genotypes was observed for all the disease variables.
Disease severity and VSC were the two most correlated variables, whereas the number of lesions and mean lesion length were the least correlated variables.