Genome-enabled predictions for fruit weight and quality from repeated records in European peach progenies
Visualitza/Obre
Autor/a
Biscarini, Filippo
Nazzicari, Nelson
Bink, Marco
Aranzana, Maria José
Verde, Ignazio
Micali, Sabrina
Pascal, Thierry
Quilot-Turion, Benedicte
Lambert, Patrick
da Silva Linge, Cassia
Pacheco, Igor
Bassi, Daniele
Stella, Alessandra
Rossini, Laura
Data de publicació
2017-06-06ISSN
1471-2164
Resum
Background: Highly polygenic traits such as fruit weight, sugar content and acidity strongly influence the
agroeconomic value of peach varieties. Genomic Selection (GS) can accelerate peach yield and quality gain if predictions show higher levels of accuracy compared to phenotypic selection. The available IPSC 9K SNP array V1 allows standardized and highly reliable genotyping, preparing the ground for GS in peach.
Results: A repeatability model (multiple records per individual plant) for genome-enabled predictions in eleven European peach populations is presented. The analysis included 1147 individuals derived from both commercial and non-commercial peach or peach-related accessions. Considered traits were average fruit weight (FW), sugar content (SC) and titratable acidity (TA). Plants were genotyped with the 9K IPSC array, grown in three countries (France, Italy, Spain) and phenotyped for 3–5 years. An analysis of imputation accuracy of missing genotypic data was conducted using the software Beagle, showing that two of the eleven populations were highly sensitive to increasing levels of missing data. The regression model produced, for each trait and each population, estimates of heritability (FW:0.35, SC:0.48, TA:0.53, on average) and repeatability (FW:0.56, SC:0.63, TA:0.62, on average). Predictive ability was estimated
in a five-fold cross validation scheme within population as the correlation of true and predicted henotypes. Results differed by populations and traits, but predictive abilities were in general high (FW:0.60, SC:0.72, TA:0.65, on average).
Conclusions: This study assessed the feasibility of Genomic Selection in peach for highly polygenic traits linked to yield and fruit quality. The accuracy of imputing missing genotypes was as high as 96%, and the genomic predictive ability was on average 0.65, but could be as high as 0.84 for fruit weight or 0.83 for titratable acidity. The estimated repeatability may prove very useful in the management of the typical long cycles involved in peach productions. All together, these results are very promising for the application of genomic selection to peach breeding programmes.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
15
Publicat per
BMC
Publicat a
BMC Genomics
Citació
Biscarini, Filippo, Nelson Nazzicari, Marco Bink, Pere Arús, Maria José Aranzana, Ignazio Verde, and Sabrina Micali et al. 2017. "Genome-Enabled Predictions For Fruit Weight And Quality From Repeated Records In European Peach Progenies". BMC Genomics 18 (1). doi:10.1186/s12864-017-3781-8.
Número de l'acord de la subvenció
EC/FP7/265582/EU/Integrated approach for increasing breeding efficiency in fruit tree crops/FRUIT BREEDOMICS
Programa
Genòmica i Biotecnologia
Aquest element apareix en la col·lecció o col·leccions següent(s)
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