Genome wide association study of two phenology traits (flowering time and maturity date) in apple

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F17%3AN0000053" target="_blank" >RIV/25271121:_____/17:N0000053 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.17660/ActaHortic.2017.1172.78" target="_blank" >http://dx.doi.org/10.17660/ActaHortic.2017.1172.78</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17660/ActaHortic.2017.1172.78" target="_blank" >10.17660/ActaHortic.2017.1172.78</a>

Result language

angličtina

Original language name

Genome wide association study of two phenology traits (flowering time and maturity date) in apple

Original language description

The aim of Genome Wide Association Studies (GWAS) is to identify markers in tight linkage disequilibrium with loci controlling quantitative trait variation. These markers can then be used in marker-assisted selection (MAS) in fruit crops such as apple. The GWAS approach involves both phenotyping of a large population of mostly unrelated individuals for the traits of interest, and genotyping at high marker density. In the EU-FP7 project FruitBreedomics, almost 1,200 European diploid dessert apple accessions (old and/or local cultivars) from six germplasm collections were genotyped with the Affymetrix Axiom_Apple480K array (487,000 SNPs). Phenotypic data on a large number of traits have been gathered during the project. Here we focus on flowering period and harvesting date. Knowledge of the genetic control of these traits is necessary to develop cultivars that can face the challenges imposed by global climate change and to target cultivar development as a function of a prolonged vegetation period in the production regions. Different models were tested, including control for effects of population structure and relatedness between cultivars. The full model, controlling for both structure and relatedness, was shown to be the most appropriate to avoid spurious marker-trait associations. When analyzing data over all collections, one significant marker-trait association was obtained for each trait, on chromosomes 9 and 3, for flowering period and harvesting date, respectively. Thereby, genomic locations previously identified in bi-parental populations could now be confirmed for a genetically diverse germplasm.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

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Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Acta Horticulturae

ISBN

978-94-62611-68-9

ISSN

0567-7572

e-ISSN

2406-6168

Number of pages

7

Pages from-to

411-417

Publisher name

ISHS

Place of publication

Leuven 1, Belgium

Event location

Bologna, Italy

Event date

Jun 14, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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