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A Procedure for Inducing the Occurrence of Rice Seedling Blast in Paddy Field
Peng Qin,Xiaochun Hu,Nan Jiang,Zhenan Bai,Tiangang Liu,Chenjian Fu,Yongbang Song,Kai Wang,Yuanzhu Yang 한국식물병리학회 2021 Plant Pathology Journal Vol.37 No.2
Rice blast caused by the filamentous fungus Magna- porthe oryzae, is arguably the most devastating rice disease worldwide. Development of a high-throughput and reliable field blast resistance evaluation system is essential for resistant germplasm screening, resistance genes identification and resistant varieties breeding. However, the occurrence of rice blast in paddy field is easily affected by various factors, particularly lack of sufficient inoculum, which always leads to the non- uniform occurrence and reduced disease severity. Here, we described a procedure for adequately inducing the occurrence of rice seedling blast in paddy field, which involves pretreatment of diseased straw, initiation of seedling blast for the first batch of spreader population, inducing the occurrence of the second batch of spreader population and test materials. This procedure enables uniform and consistent infection, which facilitates ef- ficient and accurate assessment of seedling blast resis- tance for diverse rice materials.