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Reinventing Potato as a Diploid Inbred Line–Based Crop

Author:
Jansky, Shelley H., Charkowski, Amy O., Douches, David S., Gusmini, Gabe, Richael, Craig, Bethke, Paul C., Spooner, David M., Novy, Richard G., De Jong, Hielke, De Jong, Walter S., Bamberg, John B., Thompson, A. L., Bizimungu, Benoit, Holm, David G., Brown, Chuck R., Haynes, Kathleen G., Sathuvalli, Vidyasagar R., Veilleux, Richard E., Miller, J. Creighton, Jr., Jim M., Bradeen, Jiming
Source:
Crop science 2016 v.56 no.4 pp. 1412-1422
ISSN:
1435-0653
Subject:
asexual reproduction, diploidy, food crops, genetic improvement, heterozygosity, inbred lines, outcrossing, plant breeding, potatoes, seed productivity, seed tubers, tetraploidy, true seeds
Abstract:
The third most important food crop worldwide, potato, is a tetraploid outcrossing species propagated from tubers. Breeders have long been challenged by polyploidy, heterozygosity, and asexual reproduction. It has been assumed that tetraploidy is essential for high yield, the creation of inbred potato is not feasible, and propagation by seed tubers is ideal. In this paper, we question those assumptions and propose to convert potato into a diploid inbred line-based crop propagated by true seed. Although a conversion of this magnitude is unprecedented, the possible genetic gains from a breeding system based on inbred lines and the seed production benefits from a sexual propagation system are too large to ignore. We call on leaders of public and private organizations to come together to explore the feasibility of this radical and exciting new strategy in potato breeding.
Agid:
62666
Handle:
10113/62666