Mapping of quantitative trait loci/locus conferring resistance to foxtail mosaic virus in maize using the intermated B73 x Mo17 population

摘要

P>Foxtail mosaic virus (FoMV) has been reported to have a broad range of hosts, including millet, sorghum, barley, and maize. FoMV-H93, a new strain of FoMV which was isolated from sorghum in 1993, was used to inoculate the Intermated B73 x Mo17 (IBM) syn4 population for quantitative trait loci/locus (QTL) analysis. The parents of the IBM population, B73 and Mo17, are susceptible and resistant, respectively, to this virus isolate. A panel of 94 recombinant inbred lines was used as the mapping population in our study. Eight different QTL responsible for resistance at three different stages on chromosomes 1, 2, 3, 5 and 7 were detected. The QTL provide new resources in both maize and closely related crops such as sorghum for breeding resistant plants.