Substitution mapping and characterization of brown planthopper resistance genes from indica rice variety, 'PTB33' (Oryza sativa L.).

ABSTRACT: Rice (Oryza sativa L.) yield is severely reduced by the brown planthopper (BPH), Nilaparvata lugens Stål, in Asian countries. Increasing resistance in rice against BPH can mitigate yield loss. Previous reports indicated the presence of three BPH resistance genes, BPH2, BPH17-ptb, and BPH32, in durable resistant indica rice cultivar 'PTB33'. However, several important questions remain unclear; the genetic locations of BPH resistance genes on rice chromosomes and how these genes confer resistance, especially with relationship to three major categories of resistance mechanisms; antibiosis, antixenosis or tolerance. In this study, locations of BPH2, BPH17-ptb, and BPH32 were delimited using chromosome segment substitution lines der

SUBMITTER: Nguyen CD 

PROVIDER: S-EPMC8784355 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature