A genome-wide association study reveals a genomic region associated with the carrot root shape

Alicja Macko-Podgórni , Katarzyna Stelmach , Kornelia Kwolek , D. Senalik , Philipp W. Simon , Dariusz Grzebelus

Abstract

Carrot is a vegetable widely used for fresh market and processing. Diverse groups of carrot cultivars have been developed to meet consumer demands and industry needs. The major varietal groups of cultivated carrot are defined based on the root color and shape. However, little is known about the genetic basis of root shape determination. We used 307 plants representing 103 carrot open-pollinated cultivars, to identify genomic regions associated with traits describing carrot root shape. Plants were phenotyped and genotyped using GBS (genotyping by sequencing). After filtering and imputation, 81,748 SNPs were used to perform association mapping. We observed large diversity of phenotypic traits among and within varietal groups. Based on the MLM model, a QTL located on chromosome 1 significantly associated with the shoulder diameter was identified. The identified QTL was located within an almost 600 kb long genomic region, characterized by elevated LD suggesting that the region was under selection upon domestication.
Author Alicja Macko-Podgórni (FoBaH / IoPBaB)
Alicja Macko-Podgórni,,
- Institute of Plant Biology and Biotechnology
, Katarzyna Stelmach (FoBaH / IoPBaB)
Katarzyna Stelmach,,
- Institute of Plant Biology and Biotechnology
, Kornelia Kwolek (FoBaH / IoPBaB)
Kornelia Kwolek,,
- Institute of Plant Biology and Biotechnology
, D. Senalik
D. Senalik,,
-
, Philipp W. Simon
Philipp W. Simon,,
-
, Dariusz Grzebelus (FoBaH / IoPBaB)
Dariusz Grzebelus,,
- Institute of Plant Biology and Biotechnology
Pages129-134
Publication size in sheets0.5
Article number1264_15
Book Grzebelus Dariusz, Barański Rafał (eds.): Proceedings of the II International Symposium on Carrot and Other Apiaceae, Acta Horticulturae, no. 1264, 2019, International Society for Horticultural Science (ISHS), ISBN 9789462612624, 292 p.
Keywords in Englishroot shape, association mapping, GBS
ASJC Classification1108 Horticulture
DOIDOI:10.17660/ActaHortic.2019.1264.15
URL https://www.ishs.org/ishs-article/1264_15
Languageen angielski
Score (nominal)5
Score sourcepublisherList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.276
Citation count*
Additional fields
FinansowanieThis research was financed by the Ministry of Agriculture and Rural Development of the Republic of Poland
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