Abstract
Rice is an important food grain and is a staple food for majority of the world’s population. However, biotic stresses such as diseases have impeded rice cultivation both in the tropics and subtropics. Of them, Rice sheath blight (ShB), caused by Rhizoctonia solani, leads to severe yield losses in many rice production areas worldwide. little progress has been made in rice breeding for sheath blight resistance. None of the commercially cultivated rice varieties have sufficient level of field resistance, and the disease is presently being managed by chemical pesticides.Within the strobilurins group, azoxystrobin fungicide is widely used as it works effectively against ShB pathogen infestation. The survival and inoculums potential of the R. solani is directly related with severity and incidence of disease. Wild relatives of cultivated rice are a potential source of novel genes for insect and disease resistance, as well as tolerance
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