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Article Abstract
Unlabelled: Northern Corn Leaf Blight (NCLB), caused by the fungal pathogen , is a destructive disease on maize. Identification of resistance quantitative trait loci (QTLs) or genes is crucial for breeding maize varieties with durable resistance to NCLB. Although a lot of resistance QTLs against NCLB have been isolated, only a few have been fine-mapped to date. Here, a BCF population was developed from a cross between the resistance line CIMBL75 and the susceptible line Liao3162. This population was inoculated with mixed conidia of six races. Through five field trials, five resistance QTLs against NCLB were identified in this BCF population. One of them, on bin3.04, was repeatedly detected across all five trials. It explained 4.8-9.3% of phenotypic variation. Furthermore, the locus was narrowed down to a 5.053 Mb region by using a progeny-based sequential fine-mapping strategy. Hence, holds significant potential for improving maize broad-spectrum resistance against NCLB.
Supplementary Information: The online version contains supplementary material available at 10.1007/s11032-025-01581-1.
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| http://dx.doi.org/10.1007/s11032-025-01581-1 | DOI Listing |
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