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Identification of plant architecture and yield-related QTL in Vicia faba L.

AuthorsÁvila, Carmen M.; Ruíz-Rodríguez, M. D.; Cruz-Izquierdo, Serafin; Atienza, Sergio G. ; Cubero, José I. ; Torres, Ana M.
KeywordsPlant architecture
Faba bean
QTL validation
Issue DateJul-2017
PublisherSpringer Nature
CitationMolecular Breeding 37: 88 (2017)
AbstractLow and unstable yields across seasons and environments are among the main reasons which make profitability for farmers too low. Along with resistance/tolerance to biotic and abiotic stresses, plant architecture and yield-related traits are the main determinants of yield stability. The current study was conducted to identify and validate quantitative trait loci (QTL) for plant architecture and yield-related traits in faba bean; our results provide novel information about the genetics of plant architecture traits in this crop. An equina × paucijuga recombinant inbred line population was derived and submitted to field experiments at Córdoba (Spain) over a period of four seasons. Stable QTL were identified for eight of the traits evaluated. QTL clusters were identified on almost each chromosome. The high inter-trait correlations between some of the traits controlled by a cluster of QTL might reflect either a set of closely linked loci or, more likely, pleiotropic effects. The stability of many of these major QTL in different years offers the possibility of exploiting them via marker-assisted selection. Further fine mapping of these target regions will help to identify potential candidate genes using synteny.
Publisher version (URL)http://dx.doi.org/10.1007/s11032-017-0688-7
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