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AssigneeOhalo Genetics, Inc.
InventorsJudson Arthur Ward, Jason A. Peiffer, Lien Diana Bertier, Morgan Edward Mccaw, Xingang Wang, Zachary Campbell Bower
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The present inventions relate to a breeding system for the production of polyploid potato seeds, plants, or plant parts where cycles of meiosis, syngamy, and selection are used for interpopulation improvement of progenitor lines, and sexual polyploidization occurs during hybrid production by inducing clonal gamete formation in the parents that are to be crossed. Reciprocal recurrent selection can be used to inform selection of candidate potato lines that are either advanced to a gene editing or genetic modification system or crossed and selected to induce clonal gamete formation by arresting meiotic recombination and chromosome reduction. Crosses of parent plants bearing clonal gametes are planned and executed based upon predicted heterotic performance at the polyploid level. The final product is a homogeneous population of hybrid polyploid potato seed, or derivative thereof, bearing both parents' complete nuclear genomes. In some instances, the method is used to generate seedless plants.
A population of polyploid potato seed comprising genetically uniform polyploid potato seed in an amount of at least 70% of the total number of seeds, wherein the population is all of the seeds obtained from crossing a first diploid parent MiMe potato plant having MiMe alleles on both sets of chromosomes with a second diploid parent MiMe potato plant having MiMe alleles on both sets of chromosomes, the first and second diploid parent MiMe potato plants together comprising three or four haplotypes, wherein the genetically uniform polyploid potato seed is tetraploid and comprises the three or four haplotypes and the MiMe alleles on all sets of chromosomes, the MiMe alleles comprising:
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