Genetic mapping reveals large-effect QTL for anther extrusion in CIMMYT spring wheat

dc.creatorMuqaddasi, Q.H.
dc.creatorReif, J.C.
dc.creatorRoder, M.S.
dc.creatorBasnet, B.R.
dc.creatorDreisigacker, S.
dc.date2019-09-20T20:40:25Z
dc.date2019-09-20T20:40:25Z
dc.date2019
dc.date.accessioned2023-07-17T20:04:30Z
dc.date.available2023-07-17T20:04:30Z
dc.identifier2073-4395
dc.identifierhttps://hdl.handle.net/10883/20256
dc.identifier10.3390/agronomy9070407
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7512073
dc.descriptionHybrid breeding facilitates the exploitation of heterosis and it can result in significant genetic gains and increased crop yields. Inefficient cross-pollination is a major limiting factor that hampers hybrid wheat seed production. In this study, we examined the genetic basis of anther extrusion (AE), which is an important trait in increasing cross-pollination, and thus improving seed set on the female lines and hybrid wheat seed production. We studied 300 segregating F2 plants and F2:3 families that result from a cross of two elite spring wheat lines. We observed that F2 and F2:3 populations hold significant and continuous genetic variation for AE, which suggests its reliable phenotypic selection. Composite interval mapping detected three quantitative trait loci (QTL) on chromosomes 3A, 5A, and 5D. The QTL on chromosome 5A (i.e., QAe.cimmyt-5A) was of large-effect, being consistently identified across generations, and spanned over 25 cM. Our study shows that (1) AE possesses strong genetic control (heritability), and (2) the QTL QAe.cimmyt-5A that imparted on an average of 20% of phenotypic variation can be used for marker-assisted selection (MAS) in breeding programs. In addition, pyramiding the large-effect QTL for MAS could efficiently complement the phenotypic selection since it is relatively easy and cheap to visually phenotype AE. This study reports the first large-effect QTL for AE in spring wheat, endorsing the use of this analysis in current hybrid wheat breeding and future Mendelization for the detection of underlying gene(s).
dc.formatPDF
dc.languageEnglish
dc.publisherMDPI
dc.relationhttps://www.mdpi.com/2073-4395/9/7/407/s1
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
dc.rightsOpen Access
dc.source7; art. 407
dc.source9
dc.sourceAgronomy
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectHybrid Wheat
dc.subjectAnther Extrusion
dc.subjectLinkage Mapping
dc.subjectWHEAT
dc.subjectHYBRIDS
dc.subjectHETEROSIS
dc.subjectANTHERS
dc.subjectCHROMOSOME MAPPING
dc.subjectQUANTITATIVE TRAIT LOCI
dc.titleGenetic mapping reveals large-effect QTL for anther extrusion in CIMMYT spring wheat
dc.typeArticle
dc.typePublished Version
dc.coverageBasel (Switzerland)


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