Abstract:
Blast is an important disease of rice that significantly reduces the plant growth and
productivity. Proper management can ameliorate dysfunction in and improve the plant
growth and productivity. Therefore, the present study was conducted to explore the
protective role of the triazole fungicide in helping wheat seedlings to tolerate blast disease.
Ten-day-old hydroponically grown seedlings were allowed to inoculation of Magnaporthe
oryzae triticum (MoT) spore suspension and with the fungicides (0.6 g L−1) for the next six
days. Compared to control, the level of H2O2 and O2
•− in the seedlings exposed to blast
pathogen alone increased significantly that observed by histochemical detection. Electrolyte
leakage in both shoot and root also increased after inoculation of pathogen. Therefore, leaf
relative water content, growth and biomass also decreased. However, the application of
triazole fungicide reduced H2O2 and O2
•− production as well as electrolyte leakage. Thus,
improve growth and biomass of wheat seedlings. These results indicate the exogenous
application of triazole fungide is a promising approach to improve blast tolerance in wheat
plants. Further investigation is needed under field conditions to determine the blast-tolerance
induced by triazole fungicide application.
