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
AbstractCarrot 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.
|Publication size in sheets||0.5|
|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 English||root shape, association mapping, GBS|
|Publication indicators||: 2017 = 0.276|
|Finansowanie||This research was financed by the Ministry of Agriculture and Rural Development of the Republic of Poland|
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