Genetic architecture of apple fruit quality traits following storage and implications for genetic improvement

Hardner, Craig M., Evans, Kate, Brien, Chris, Bliss, Fred and Peace, Cameron (2016) Genetic architecture of apple fruit quality traits following storage and implications for genetic improvement. Tree Genetics and Genomes, 12 20: . doi:10.1007/s11295-016-0977-z


Author Hardner, Craig M.
Evans, Kate
Brien, Chris
Bliss, Fred
Peace, Cameron
Title Genetic architecture of apple fruit quality traits following storage and implications for genetic improvement
Journal name Tree Genetics and Genomes   Check publisher's open access policy
ISSN 1614-2950
1614-2942
Publication date 2016-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s11295-016-0977-z
Open Access Status Not Open Access
Volume 12
Issue 20
Total pages 21
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2017
Language eng
Abstract Accurate prediction of genetic potential and response to selection in breeding requires knowledge of genetic parameters for important selection traits. Data from breeding trials can be used to obtain estimates of these parameters so that predictions are directly relevant to the improvement program. Here, a factor allocation diagram was developed to describe the sampling design used to assess the quality of fresh and post-storage (2 months) fruit from advanced selection trial in an apple breeding program from which models for analyses were developed. Genetic variation was the largest source of variation for the fruit size, red colour type, proportion of red skin colour and lenticels, and instrumentally assessed fruit diameter, mass, puncture force and titratable acidity. In contrast, residual variation was the largest for fruit shape, juiciness, sweetness, aromatic flavour, eating and overall quality, and instrumental crispness. Genetic effects for traits were generally stable over fixed effects, except for a significant interaction with storage duration for firmness. Genetic correlations among traits were generally weak except between fruit mass (and diameter) and sensory size (0.98), titratable acidity and sensory acidity (0.97), puncture force and sensory firmness (0.96–0.90), crispness and juiciness (0.87), sweetness and aromatic flavour (0.84) and instrumental and sensory crispness (0.75). Predictions of the performance for seven commercial cultivars are presented. This study suggests that the Washington State apple production area can be treated as a single target environment and sufficient diversity exists to generate new elite cultivars. In addition, options for evaluating the efficiency of apple breeding are discussed.
Keyword Breeding
Cultivar testing
Genetic correlation
Heritability
Repeatability
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
 
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