Research Progress of Brown Planthopper Resistance Genes in Rice

The research progresses on brown planthopper(Nilaparvata lugens Stl,BPH) resistance genes in rice were summarized.BPH is one of the most destructive pests in crop production worldwide.They gather at the base part of rice plant and suck assimilates from the phloem.BPH has various biotypes.Under the selection pressure of resistant variety,a new biotype of BPH might come out to overcome the resistance of the variety.Exploring new resistance gene is critical for developing resistant rice variety.Appropriate evaluation of germplasm for BPH resistance is the key to identify resistance genes correctly.There are several types of screening methods such as the standard seedbox screening technique,honey dew test,electronic monitoring system and so on.To date,21 BPH-resistance genes have been identified from cultivated and wild rice species.Bph14 is the first report of BPH-resistance gene in rice.These results provide basis for the clone of more BPH resistance genes and the study on molecular mechanism of rice resistance to BPH.