The brown plant hopper(BPH),Nilaparvata lugens,is one of the most destructive pests in rice production.Exploring resistance resources and developing resistance varieties of rice is a low cost and effective solution for protecting rice from BPH.Exploring BPH resistance genes from Yunnan wild rice materials could be used for developing new varieties of rice with high resistance.In this study,nine BPH resistance genes were detected in samples of Yunnan wild rice by phenotypic and PCR identification.The results showed that:Yunnan wild rice got different levels of resistance to BPH.Particularly,O.granulata and O.officinalis were highly resistant to the pest and could be used as excellent materials of insect resistance in breeding.According to PCR detection,the resistance genes Bph1 and Bph18(t) were not found in all three wild rice materials.O.rufipogon from Yuanjiang and Jinghong probably carry bph2.O.rufipogon from Dongxiang probably carry bph2,Bph15 and Bph27(t).O.granulata probably carry bph2 and bph19(t).O.officinalis and O.officinalis(broadleaf) probably carry bph2 and Bph6,respectively.O.officinalis F₁ probably carry bph2,Bph14 and bph20(t).O.officinalis F₂ probably carry bph2 and Bph27(t).These results provided a solid basis for exploring and using new BPH resistance genes from Yunnan wild rice.