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Title

Looking for candidate genes for some pleasant key aroma compounds in F1 strawberry population

AuthorsRey-Serra, Pol; Monfort, Amparo
Issue Date2019
CitationAt the Forefront of Plant Research (2019)
AbstractCultivated strawberries (Fragaria x ananassa) are appreciated for their taste and aroma. Although their octoploid nature (2n = 8x = 56), several efforts have been done to characterize and identify the 19 key volatile compounds responsible of this characteristic aroma. In order to deeply study it, a F1 population of 63 progenies from FC50 and FD54 cross were phenotype in 6 harvests during 3 years (2016-18). Fruits were harvest at maturation stage and volatile composition was determined by GC-MS. A SNPs genetic map of this population was constructed by genotyping 55 individuals with IStraw35k array. The GC-MS of these 19 key compounds permit to do a QTLs analysis for volatiles. In total, we found 64 QTLs but only 14 were stable during 3 years. From linalool and nerolidol, there is a common QTL in the beginning of LG3B covering a region of 15cM. Recent access to octoploid strawberry genome, it shows that this region has 725 genes including FaNES1, nerolidol synthase 1, which could be a candidate gene. Furthermore, there is another QTL for methyl hexanoate and ethyl hexanoate in the end of LG4B covering a region of 7cM with a total of 263 genes including several candidate genes. There are others QTLs for these compounds that are not in common. Some transcript experiments will be done soon.
DescriptionResumen del póster presentado al Congreso 'At the Forefront of Plant Research', celebrado en Barcelona (España) del 6 al 8 de mayo de 2019.
URIhttp://hdl.handle.net/10261/207425
Appears in Collections:(CRAG) Comunicaciones congresos
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