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Genetic diversity of carrot (Daucus carota L.) cultivars revealed by analysis of SSR loci

Affiliation
Department of Genetics, Plant Breeding and Seed Science, University of Agriculture in Krakow, Poland
Baranski, Rafal;
Affiliation
Department of Genetics, Plant Breeding and Seed Science, University of Agriculture in Krakow, Poland
Maksylewicz-Kaul, Anna;
GND
1059150638
Affiliation
Julius Kühn-Institute (JKI), Institute for Breeding Research on Horticultural and Fruit Crops, Germany
Nothnagel, Thomas;
Affiliation
USDA-ARS Vegetable Research Crops Unit, Department of Horticulture, University of Wisconsin-Madison, WI, USA
Cavagnaro, Pablo F.;
Affiliation
USDA-ARS Vegetable Research Crops Unit, Department of Horticulture, University of Wisconsin-Madison, WI, USA
Simon, Philipp W.;
Affiliation
Department of Genetics, Plant Breeding and Seed Science, University of Agriculture in Krakow, Poland
Grzebelus, Dariusz

Polymorphism of simple sequence repeat (SSR) loci was assessed in a collection of 88 carrot (Daucus carota L. subsp. sativus Hoffm.) accessions. The collection comprised cultivars and landraces mainly from Asia, Europe, and North America. Plants were grown in the glasshouse and characterized for root color and shape. Thirty SSR loci were fully characterized using parameters derived from allele frequencies, i.e. the number of total, effective and rare alleles, the observed and expected heterozygosity, and fixation index. Using a Bayesian approach, two clusters of 17 and 61 accessions were distinguished, which comprised the Asian and Western type accessions, respectively. Genetic diversity of the Asian gene pool was higher than that of the Western gene pool. The results of SSR analysis were supported by morphological characterization, and are congruent with current knowledge on the history of carrot domestication and breeding.

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