Genetic analysis and molecular mapping of QTLs for resistance to XXXX black-streaked dwarf disease in @entity579 .

@entity62735 @entity579 @entity71550
@entity579 black-streaked dwarf disease, caused by @entity71550 ), is transmitted by @entity62735 ( @entity62735 Fall  n, SBPH) and causes severe yield loss in epidemic years in China and other East Asian countries. Breeding for resistance to @entity71550 is a promising strategy to control the disease. We identified Tetep that showed resistance to @entity71550 using a field test and artificial inoculation test. An evaluation of the resistance mechanism revealed that Tetep was resistant to @entity71550 but not to SBPH. Genetic analysis showed that the resistance of Tetep to @entity71550 was controlled by quantitative trait loci (QTLs). Three new QTLs for @entity71550 resistance were identified in this study, i.e., qRBSDV-3, qRBSDV-10 and qRBSDV-11. The LOD scores of qRBSDV-3, qRBSDV-10 and qRBSDV-11 were 4.07, 2.24 and 2.21, accounting for 17.5%, 0.3% and 12.4% of the total phenotypic variation, respectively. All the resistance loci identified in this study were associated with virus resistance genes. The alleles for enhancing resistance on chromosomes 3 and 11 originated from Tetep, whereas the other allele on chromosome 10 originated from a susceptible parent. The identified new resistance QTLs in this study are useful resources for efficiently breeding resistant @entity579 cultivars to @entity71550 .
