In order to clarify the rice blast resistance of different rice varieties tested in Liaoning Province,we analyzed the rice blast resistance of 352 rice varieties(lines)participating in the regional rice experiment in Liaoning Province from 2016 to 2020.The results showed that the resistance to rice blast was mainly grade resistant,most of the varieties reached the level of medium resistance or above,and relatively few varieties with high resistance.In terms of resistance to blast,the proportion of resistant grade and above was similar among different varieties,but there was no significant difference.In general,rice blast resistance reached a high level,with 69%of rice blast resistance or above.It is necessary to further improve the screening of rice blast resistance.Judging from the proportion of susceptible and highly susceptible varieties,there was a phenomenon that the disease was more serious in certain years and certain types of varieties.
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