QTL mapping of a partial resistance to the corn delphacid‐transmitted viruses in Lepidopteran‐resistant maize line Mp705. Issue 1 (16th December 2013)

• Record Type: Journal Article
• Authors: Dintinger, Jacques A.; Salgon, Sylvia; Reynaud, Bernard; Lübberstedt, T.
• Is Part Of: Plant breeding. Volume 133:Issue 1(2014)
• Page Start: 19
• Page End: 27
• Publication Date: 2013-12-16
• Subjects: Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12135
• Languages: English
• ISSNs: 0179-9541

Abstract

<abstract abstract-type="main" id="pbr12135-abs-0001"> <title>Abstract</title> <p>A partial resistance to <italic>maize mosaic virus</italic> (MMV) and <italic>maize stripe virus</italic> (MStV) was mapped in a RILs population derived from a cross between lines MP705 (resistant) and B73 (susceptible). A genetic map constructed from 131 SSR markers spanned 1399 cM with an average distance of 9.6 cM. A total of 10 QTL were detected for resistance to MMV and MStV, using composite interval mapping. A major QTL explaining 34–41% of the phenotypic variance for early resistance to MMV was detected on chromosome 1. Another major QTL explaining up to 30% of the phenotypic variation for all traits of resistance to MStV was detected in the centromeric region of chromosome 3 (3.05 bin). After adding supplementary SSR markers, this region was found to correspond well to the one where a QTL of resistance to MStV already was located in a previous mapping study using an F₂ population derived from a cross between Rev81 and B73. These results suggested that these QTL of resistance to MStV detected on chromosome 3 could be allelic in maize genome.</p> </abstract>