Isozyme analysis of wild and domesticated accessions indicated that domestication of the cultivated carrot Daucus carota ssp. sativus resulted in an insignificant reduction of all genetic variability and genetic distance estimates. Although they are less variable genetically, cultivated forms maintain a high proportion of observed heterozygosity. Relative to the overall genetic variability of the species, samples from four common cultivars ‘Red Cored Chantenay’, ‘Scarlet Nantes’, ‘Danvers Half Long’ and ‘A Plus’ demonstrated a high degree of genetic similarity. This is attributed to the recent development of orange cultivars and the limited gene pool utilized in their development.
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St. Pierre, M.D., Bayer, R.J. The impact of domestication on the genetic variability in the orange carrot, cultivated Daucus carota ssp. sativus and the genetic homogeneity of various cultivars. Theoret. Appl. Genetics 82, 249–253 (1991). https://doi.org/10.1007/BF00226221
- Isozyme electrophoresis
- Genetic bottleneck