Granted Patent
B2
US 12,433,236 · App. 17/461,445 · Granted Oct 7, 2025
Hybrid seed potato breeding
Inventors:
Willem Hendrik Lindhout (Wageningen, NL); Teunis Philippus Schotte (Hazerswoude-Dorp, NL); Richard Gerardus Franciscus Visser (Bennekom, NL); Herman Johannes van Eck (Wageningen, NL); Ronaldus Cornelis Bernardus Hutten (Rhenen, NL)
Assignee:
Agventure B.V.
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Abstract
The present invention relates to diploid, fertile, self-compatible and essentially homozygous potato lines, wherein said lines comprise an agronomically desirable trait such as vigour. The invention further relates to methods for producing such plants and to hybrid seeds obtained by crossing such homozygous potato lines and to potato plants grown from said see.
Claims (28)
1. A diploid, fertile, self-compatible and essentially homozygous potato line comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant, wherein said potato line is of the species Solanum tuberosum optionally comprising introgression segments of other tuber bearing Solanum species crossable to Solanum tuberosum , wherein at least 80% of the genomic loci in the genome of said potato line are homozygous, wherein said self-compatibility in said line is conferred by the S-locus inhibitor (Sli) gene, and wherein a copy of said gene is present in potato lines AGVD1, AGVD2, AGVD3, and AGVD17, representative seeds of said lines having been deposited with the NCIMB under NCIMB accession number 41663, NCIMB accession number 41664, NCIMB accession number 41665, and NCIMB accession number 41765, respectively.
2. The potato line of claim 1 , wherein said line in addition to said tuber yield comprises at least one agronomically desirable trait, wherein said trait is insect tolerance, nematode resistance, disease resistance, herbicide tolerance, cold tolerance, drought tolerance, wet tolerance, tolerance to dry and wet rot, salinity tolerance, or cold-sweetening resistance.
3. The potato line of claim 1 , wherein plants of said line when mature attain an average fresh weight of foliage and shoots of at least 500 grams per plant.
4. A plant of the line according to claim 1 .
5. A seed or tuber of the plant according to claim 4 .
6. A method for producing the diploid, fertile, self-compatible and essentially homozygous potato line of claim 1 , comprising:
(a) providing a first potato plant, which first potato plant is a plant of a first diploid, self-compatible, fertile and essentially homozygous potato line, wherein said self-compatibility is conferred by the S-locus inhibitor (Sli) gene, and wherein a copy of said gene is present in potato lines AGVD1, AGVD2, AGVD3, and AGVD17, representative seeds of said lines having been deposited with the NCIMB under NCIMB accession number 41663, NCIMB accession number 41664, NCIMB accession number 41665, and NCIMB accession number 41765, respectively;
(b) providing a second potato plant, wherein said second potato plant is a plant of a diploid or tetraploid potato line of the species Solanum tuberosum optionally comprising introgression segments of other tuber bearing Solanum species crossable to Solanum tuberosum which may have any level of homozygosity, said line of said second potato plant comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant;
(c) cross pollinating said first and second potato plant to provide seeds and collecting said seeds to thereby provide an offspring generation in the form of a hybrid offspring seed;
(d) growing said hybrid offspring seed into a population of hybrid offspring potato plants and selecting from said population a plant producing tubers at a yield expressed in grams of fresh weight of at least 200 grams per plant, and
(e) selfing said hybrid offspring potato plant or backcrossing said hybrid offspring potato plant to a potato plant of said line of said first potato plant, for between 1 to 8 selfings or backcrosses, to thereby provide a diploid, self-compatible and essentially homozygous potato breeding line comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant.
7. The method of claim 6 , wherein said steps (a)-(e) are repeated and wherein step (b) comprises the provision of a further potato plant, wherein said further potato plant is a donor for an additional agronomically desirable trait.
8. The method according to claim 7 , wherein said trait is insect tolerance, nematode resistance, disease resistance, herbicide tolerance, cold tolerance, drought tolerance, wet tolerance, tolerance to dry and wet rot, salinity tolerance, or cold-sweetening resistance.
9. The method of claim 6 , wherein said second potato plant is a plant of a second diploid, fertile, self-compatible and essentially homozygous potato line.
10. The method of claim 6 , wherein said second potato plant is a plant of a second diploid, fertile, self-incompatible potato line.
11. A method for producing a uniform hybrid potato seed, comprising:
(a) providing a first potato plant, which first potato plant is a plant of a first diploid, fertile, self-compatible and essentially homozygous potato line comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant according to claim 1 ;
(b) providing a second potato plant, wherein said second potato plant is a plant of a second diploid, fertile, self-compatible and essentially homozygous potato line comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant according to claim 1 , wherein said first plant of said first potato line and said second plant of said second potato line contain at least 20% contrasting homozygous loci as determinable by molecular marker analysis;
(c) cross-pollinating said first and second potato plant and allowing one of said parent plants to produce berries with seeds; and
(d) collecting said seeds from said berries to provide a hybrid offspring seed.
12. A seed produced by the method of claim 11 .
13. A hybrid potato plant, or part thereof, produced by growing the hybrid offspring seed of claim 11 .
14. Pollen or an ovule of the plant of claim 13 .
15. A tuber from the plant of claim 13 .
16. A tissue culture of the plant of claim 13 .
17. A potato plant regenerated from the tissue culture of claim 16 .
18. A method of producing a hybrid potato plant, said method comprising producing a seed according to a method of claim 11 and growing said seed into a potato plant.
19. A set of at least 2 intercrossable homozygous diploid, fertile, self-compatible and essentially homozygous potato lines comprising plants having an average tuber yield expressed in grams of fresh weight of at least 200 grams per plant according to claim 1 , wherein each of said lines differ from another line in said set by having at least 20% contrasting homozygous loci as determinable by molecular genetic marker analysis.
Priority Claims (1)
EP 09013474
· Oct 26, 2009
· regional
Continuity (4)
Continuation
13504156
Provisional Application
61254980
· Oct 26, 2009
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