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Identification and validation of a QTL for fruit firmness on linkage group 4 in three sweet cherry populations

hal.structure.identifierMichigan State University [East Lansing]
dc.contributor.authorCAI, Lichun
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorQUERO-GARCIA, José
dc.contributor.authorBARRENECHE, Teresa
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDIRLEWANGER, Elisabeth
hal.structure.identifierClemson University
dc.contributor.authorSASKI, Christopher
hal.structure.identifierMichigan State University [East Lansing]
dc.contributor.authorIEZZONI, Amy
dc.date.conference2018-06-26
dc.description.abstractEnFruit firmness is an important market driven trait in sweet cherry (Prunus avium L.) as firmness dictates the harvesting, handing and marketing practices. In addition, consumers prefer firm sweet cherries. To investigate the genetic basis of fruit firmness, three different mapping populations were used: an INRA bi-parental F1 population, an INRA sweet cherry diversity population, and the RosBREED pedigreed population. For all three populations, the effects of different genotypes for fruit firmness were highly significant, and the broad-sense heritabilities were high ranging from 0.73 to 0.97. The INRA F1 sweet cherry population exhibited a bimodal distribution for fruit firmness which suggested that this population was segregating for a major locus controlling this trait. A major QTL for fruit firmness, named qP-FF4.1, that has not previously been reported, was identified in all three sweet cherry populations. Thirteen haplotypes (alleles) associated with either soft or firm fruit were identified for qP-FF4.1 in the sweet cherry germplasm. The soft fruit alleles for qP-FF4.1 contributed by the wild ‘mazzard’ sweet cherries were dominant over the firm fruit alleles. The identification of candidate genes for this fruit firmness QTL is underway. These results advance our understanding of the genetic basis of fruit firmness and will help to enable the use of DNA informed breeding for this trait in sweet cherry breeding programs.
dc.language.isoen
dc.subjectarbre fruitier
dc.subjectfruit à noyau
dc.subject.enFruit firmness
dc.subject.enQTL
dc.subject.enSweet cherry
dc.subject.enHaplotype
dc.subject.enDNA informed breeding
dc.subject.enPrunus avium L
dc.title.enIdentification and validation of a QTL for fruit firmness on linkage group 4 in three sweet cherry populations
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Amélioration des plantes
bordeaux.conference.title9th International Rosaceae Genomics Conference
bordeaux.countryCN
bordeaux.conference.cityNanjing
bordeaux.peerReviewedoui
hal.identifierhal-03318833
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2018-06-30
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03318833v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=CAI,%20Lichun&QUERO-GARCIA,%20Jos%C3%A9&BARRENECHE,%20Teresa&DIRLEWANGER,%20Elisabeth&SASKI,%20Christopher&rft.genre=conference


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