Multi-year analyses on three populations reveal the first stable QTLs for tolerance to rain-induced fruit cracking in sweet cherry (Prunus avium L.)
| Autor: | José Antonio Campoy, Elisabeth Dirlewanger, S. Malchev, Camille Branchereau, Teresa Barreneche, Philippe Letourmy, José Quero-Garcia |
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| Přispěvatelé: | Biologie du fruit et pathologie (BFP), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Agroécologie et Intensification Durables des cultures annuelles (UPR AIDA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Max Planck Institute for Plant Breeding Research (MPIPZ), Fruit Growing Institute - Plovdiv, Partenaires INRAE |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Candidate gene sweet cherry QTL [SDV]Life Sciences [q-bio] Plant Science 01 natural sciences Biochemistry Plant breeding F30 - Génétique et amélioration des plantes Prunus éclatement du fruit Genotype Marqueur génétique Cultivar phytogénétique Tolerance à l'eau food and beverages Horticulture prunus arbre fruitier à noyau Fruit cracking Phenoligical traits Trait fruit à noyau Génotype Biotechnology Locus des caractères quantitatifs déterminisme génétique Plant genetics Prunus avium Biology Quantitative trait locus Genetic determinism Article Candidate genes 03 medical and health sciences Variation génétique Genetic variation Genetics [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Éclatement de fruit [SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding 030104 developmental biology Linkage maps Genetic markers H50 - Troubles divers des plantes 010606 plant biology & botany |
| Zdroj: | Horticulture Research Horticulture research Horticulture research, Nature Publishing Group, 2021, 8 (1), pp.136. ⟨10.1038/s41438-021-00571-6⟩ |
| ISSN: | 2052-7276 2662-6810 |
| DOI: | 10.1038/s41438-021-00571-6⟩ |
| Popis: | Rain-induced fruit cracking is a major problem in sweet cherry cultivation. Basic research has been conducted to disentangle the physiological and mechanistic bases of this complex phenomenon, whereas genetic studies have lagged behind. The objective of this work was to disentangle the genetic determinism of rain-induced fruit cracking. We hypothesized that a large genetic variation would be revealed, by visual field observations conducted on mapping populations derived from well-contrasted cultivars for cracking tolerance. Three populations were evaluated over 7–8 years by estimating the proportion of cracked fruits for each genotype at maturity, at three different areas of the sweet cherry fruit: pistillar end, stem end, and fruit side. An original approach was adopted to integrate, within simple linear models, covariates potentially related to cracking, such as rainfall accumulation before harvest, fruit weight, and firmness. We found the first stable quantitative trait loci (QTLs) for cherry fruit cracking, explaining percentages of phenotypic variance above 20%, for each of these three types of cracking tolerance, in different linkage groups, confirming the high complexity of this trait. For these and other QTLs, further analyses suggested the existence of at least two-linked QTLs in each linkage group, some of which showed confidence intervals close to 5 cM. These promising results open the possibility of developing marker-assisted selection strategies to select cracking-tolerant sweet cherry cultivars. Further studies are needed to confirm the stability of the reported QTLs over different genetic backgrounds and environments and to narrow down the QTL confidence intervals, allowing the exploration of underlying candidate genes. |
| Databáze: | OpenAIRE |
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