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Genetic Mapping and Analysis of Quantitative Trait Loci for Resistance to Stalk Tunneling by the European Corn Borer in Maize
Author(s) -
Cardinal Andrea J.,
Lee Michael,
Sharopova Natalya,
WoodmanClikeman Wendy L.,
Long Mary J.
Publication year - 2001
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2001.413835x
Subject(s) - quantitative trait locus , biology , european corn borer , ostrinia , agronomy , population , anthesis , inbred strain , pest analysis , genetics , horticulture , gene , cultivar , pyralidae , demography , sociology
The European corn borer (ECB), Ostrinia nubilalis (Hübner), is an important pest of temperate maize ( Zea mays L.). Damage to the stalk could be minimized by breeding for resistant genotypes but selection is hindered by a laborious phenotypic assay. Knowledge of the position of quantitative trait loci (QTL) conferring resistance to ECB tunneling could greatly simplify selection for this trait. This study was conducted to map QTL for resistance to ECB tunneling, plant height, and anthesis. Recombinant inbred lines of the maize single‐cross population B73×B52, were grown at two locations in Iowa in 1997 and 1998. Genotypic and phenotypic data were obtained from each line to perform the QTL analysis. Nine QTL were detected for ECB tunneling, and they were associated with 59% of the genetic variation. Genetic effects for decreased tunneling were derived from the resistant parent, B52, at six QTL. One digenic interaction was detected between QTL for ECB tunneling. Eight and 10 QTL were detected for anthesis and plant height, respectively. ECB tunneling was not significantly correlated with either trait. Several QTL for ECB tunneling reported herein, QTL for ECB tunneling in other maize populations, and QTL for resistance to leaf damage by insect pests of tropical maize are located at similar positions of the maize genetic map.