Abstract
Classical plant breeding approaches have succeeded in improving the productivity of the carrot crop for growers and the quality of the crop for consumers over the last century. A significant breeding focus has been on genetic control of male fertility to assure successful production of hybrid cultivars, with relatively little emphasis on formal studies of other reproductive traits such as seed yield and vernalization requirements, or on crop morphology. Another strong focus for carrot breeders has been selection for resistance to Alternaria leaf blight and root-knot nematodes. Future crop producers will likely face more challenging abiotic threats and additional biotic threats to the crop, and little effort has been directed to those traits. In an effort to improve carrot consumer quality, pigments and flavor compounds have received much attention by carrot breeders. With the expansion of carrot global markets, a broader range of consumer traits may require attention as carrot breeding programs move forward. The sequencing of the carrot genome provides an important foundation for a better understanding of the genetics of traits important for growers and consumers, for developing molecular tools to accelerate the breeding process, and for identifying genes of potential interest for gene editing. The breadth of genetic diversity in carrot germplasm is a valuable resource that will provide an important foundation for future carrot breeding. A better understanding of that diversity will be needed to take full advantage of it, and the carrot genome sequence will provide insights into that understanding.
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Simon, P.W. (2019). Classical and Molecular Carrot Breeding. In: Simon, P., Iorizzo, M., Grzebelus, D., Baranski, R. (eds) The Carrot Genome. Compendium of Plant Genomes. Springer, Cham. https://doi.org/10.1007/978-3-030-03389-7_9
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