Abstract
Brown planthopper (BPH) is the most devastating pest of rice. Host-plant resistance is the most desirable and economic strategy in the management of BPH. To date, 29 major BPH resistance genes have been identified from indica cultivars and wild rice species, and more than ten genes have been fine mapped to chromosome regions of less than 200 kb. Four genes (Bph14, Bph26, Bph17 and bph29) have been cloned. The increasing number of fine-mapped and cloned genes provide a solid foundation for development of functional markers for use in breeding. Several BPH resistant introgression lines (ILs), near-isogenic lines (NILs) and pyramided lines (PLs) carrying single or multiple resistance genes were developed by marker assisted backcross breeding (MABC). Here we review recent progress on the genetics and molecular breeding of BPH resistance in rice. Prospect for developing cultivars with durable, broad-spectrum BPH resistance are discussed.
Highlights
Rice is the most important cereal crops in the Asia-Pacific region, China, India, Japan, Indonesia, and Vietnam, where the brown planthopper (BPH, Nilaparvata lugens Stål) has become its most damaging insect pest
We review here recent progress on Brown planthopper (BPH) resistance genetics and molecular breeding in rice, aiming to help a wider utilization of BPH resistance genes
After searching the Genesy database maintained at International Rice Research Institute (IRRI) we identified a total of 573 cultivated rice accessions that showed resistance to at least one BPH biotype
Summary
Rice is the most important cereal crops in the Asia-Pacific region, China, India, Japan, Indonesia, and Vietnam, where the brown planthopper (BPH, Nilaparvata lugens Stål) has become its most damaging insect pest. Since the development of molecular markers (SSR, InDel, SNPs) and functional genomics, the genetic studies of BPH resistance in rice have intensified.
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