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Genome-Wide Association and Genomic Prediction for Fry Color in Potato

Teagasc, Crop Science Department, Oak Park, R93XE12 Carlow, Ireland
Author to whom correspondence should be addressed.
Agronomy 2020, 10(1), 90;
Received: 2 December 2019 / Revised: 13 December 2019 / Accepted: 24 December 2019 / Published: 9 January 2020
(This article belongs to the Special Issue Potato Genetics and Breeding in the Genomics Era)
Potatoes destined for crisping are normally stored above 8 degrees; below this glucose accumulates leading to very dark fry colors and potential acrylamide build up. Unfortunately, sprouting occurs above 4 degrees and impacts product quality, necessitating the use of sprout suppressant chemicals. Therefore, a goal of breeders is to develop potatoes with excellent fry color, which is maintained under storage below 8 degrees. Genomic or marker-assisted selection offers an opportunity to improve the efficiency of potato breeding and thereby assist breeders in achieving this goal. In this study, we have accumulated fry-color data on a large population of potato lines and combined this with genotypic data to carry out a GWAS and to evaluate accuracy of genomic prediction. We were able to identify a major QTL on chromosome 10 for fry color, and predict fry color with moderate accuracy using genome-wide markers. Furthermore, our results provide evidence that it is possible to identify a small subset of SNPs for processing characteristics that can give moderate predictive ability, albeit lower than that achieved with genome-wide markers. View Full-Text
Keywords: potato; fry color; genomic prediction potato; fry color; genomic prediction
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MDPI and ACS Style

Byrne, S.; Meade, F.; Mesiti, F.; Griffin, D.; Kennedy, C.; Milbourne, D. Genome-Wide Association and Genomic Prediction for Fry Color in Potato. Agronomy 2020, 10, 90.

AMA Style

Byrne S, Meade F, Mesiti F, Griffin D, Kennedy C, Milbourne D. Genome-Wide Association and Genomic Prediction for Fry Color in Potato. Agronomy. 2020; 10(1):90.

Chicago/Turabian Style

Byrne, Stephen, Fergus Meade, Francesca Mesiti, Denis Griffin, Colum Kennedy, and Dan Milbourne. 2020. "Genome-Wide Association and Genomic Prediction for Fry Color in Potato" Agronomy 10, no. 1: 90.

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