Fine Mapping of a New Major QTL-qGLS8 for Gray Leaf Spot Resistance in Maize.

ABSTRACT: Gray leaf spot (GLS), caused by different species of Cercospora, is a fungal, non-soil-borne disease that causes serious reductions in maize yield worldwide. The identification of major quantitative trait loci (QTLs) for GLS resistance in maize is essential for developing marker-assisted selection strategies in maize breeding. Previous research found a significant difference (P < 0.01) in GLS resistance between T32 (highly resistant) and J51 (highly susceptible) genotypes of maize. Initial QTL analysis was conducted in an F_{2 : 3} population of 189 individuals utilizing genetic maps that were constructed using 181 simple sequence repeat (SSR) markers. One QTL (qGLS8) was detected, defined by the markers umc1130 and umc2354 in three environments. The qGLS8</

SUBMITTER: Qiu H 

PROVIDER: S-EPMC8484643 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature