An open question is to what extent the genome segments originating from wild carrot species affect phenotypes in the cultivars. Gene flow between cultivated and wild carrot has resulted in domesticated carrot sharing many of the same alleles as wild carrot. Recent molecular evidence suggested that wild species have made significant contributions to carrot evolution and domestication. Various cultivars with orange roots have been developed to meet consumer demands examples are “Nantes”, “Kuroda”, “Imperator”, and “Amsterdam forcing”. Over the last few centuries, the carrot has become one of the most important and nutritional Apiaceae crops. sativus) can be regarded as early ancestral types from approximately 1100 years ago, the red or purple-red cultivars are recorded from about 440 years ago, and orange cultivars are not reliably reported until the sixteenth century in Europe. The purple and yellow carrot cultivars ( D. Approximately 5600 carrot and Daucus species accessions have been collected and preserved worldwide. carota) is a widespread weedy species that is distributed in Europe, Southwest and Central Asia, North Africa, North and South America, and found from Afghanistan to the Mediterranean area.
The effects of introgressed genomic segments from the wild species on the storage root are reported and will enable the identification of functional genes that control root morphological traits in carrot. Five stable QTLs related to root length, root shoulder width, dry material content of root, and ratio of root shoulder width to root middle width were consistently detected on chromosome 2 in both years and explained 23.4–66.9% of the phenotypic variance. We constructed a genetic map with 2027 bins containing 154,776 SNPs the total genetic distance was 1436.43 cM and the average interval between the bins was 0.71 cm. Genomic resequencing of the two parental lines and the BILs resulted in 3,223,651 single nucleotide polymorphisms (SNPs), and 13,445 bin markers were generated using a sliding window approach. Only few lines retained features of wild parent. The morphological features in the BIL population became more diverse after several generations of selfing BC 2F 1 plants. carota “Songzi” and the orange cultivar “Amsterdam forcing” was developed. A backcross inbred line (BIL) population derived from a cross between the wild species Daucus carota ssp. Little is known about the genomic contribution of wild species to the phenotypes of present-day cultivars, although several studies have focused on identifying genetic loci that contribute to the morphology of storage roots.
Cultivated carrot is thought to have been domesticated from a wild species, and various phenotypes developed through human domestication and selection over the past several centuries.
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