华南稻区抗白叶枯病育种研究现状与展望OA

Bacterial blight(caused by Xanthomonas oryzae pv.oryzae)poses a serious threat to global rice production.In recent years,the prevalence of bacterial blight has been increasing in the South China rice-growing region,posing significant challenges to rice production safety.This study reviews the predominant pathotypes of bacterial blight isolates in the South China rice region,evaluates the bacterial blight resistance of commercially released rice varieties in this region,and summarizes the technologies and applications for improving broad-spectrum resistance to this disease.By systematically analyzing the pathogenic variation across subregions and the differences in variety resistance,this work aims to provide targeted breeding recommendations and practical references for enhancing resistance to bacterial blight.Finally,prospects for breeding bacterial blight-resistant rice varieties in South China are outlined.