Lettuce variety winter heart

1. A seed of lettuce cultivar Winter Heart, a representative sample of seed having been deposited under ATCC Accession No. PTA-122228.

2. A plant of lettuce cultivar Winter Heart, a representative sample of seed having been deposited under ATCC Accession No. PTA-122228.

3. A lettuce plant, or a part thereof, having all the physiological and morphological characteristics of the lettuce plant of claim 2 .

4. A progeny lettuce plant of the plant of claim 2 that shares at least 50% of its alleles with the plant of claim 2 .

5. A seed that produces the plant of claim 4 .

6. A plant part of the lettuce plant of claim 2 .

7. The plant part of claim 6 , wherein the plant part is a leaf, pollen, an ovule, an anther, a root, or a cell.

8. A tissue culture of regenerable cells of the plant of claim 2 .

9. A lettuce plant regenerated from the tissue culture of claim 8 or a selfed progeny thereof, wherein said lettuce plant expresses all of the physiological and morphological characteristics of lettuce cultivar Winter Heart.

10. A processed product from the plant of claim 2 , wherein the processed product comprises cut, sliced, ground, pureed, dried, canned, jarred, washed, packaged, frozen and/or heated leaves.

11. A method of producing lettuce seed, the method comprising crossing the plant of claim 2 with itself or a second lettuce plant and harvesting the resulting seed.

12. A lettuce seed from a plant produced by the method of claim 11 .

13. A lettuce plant, or part thereof, produced by growing the seed of claim 12 .

14. A doubled haploid plant produced from the lettuce plant of claim 13 .

15. A method for producing a seed of a lettuce plant derived from the plant of claim 2 , the method comprising:

(a) crossing a plant of lettuce cultivar Winter Heart, a representative sample of seed of lettuce cultivar Winter Heart having been deposited under ATCC Accession No. PTA-122228, with a second lettuce plant; and

(b) allowing seed to form;

(c) growing a plant from the seed of step (b) to produce a plant derived from lettuce cultivar Winter Heart;

(d) selfing the plant of step (c) or crossing it to a second lettuce plant to form additional lettuce seed derived from lettuce cultivar Winter Heart; and

(e) optionally repeating steps (c) and (d) one or more times to generate further derived lettuce seed from lettuce cultivar Winter Heart, wherein in step (c) a plant is grown from the additional lettuce seed of step (d) in place of growing a plant from the seed of step (b).

16. A seed produced by the method of claim 15 , wherein the seed shares at least 50% of its alleles with lettuce cultivar Winter Heart, a representative sample of seed having been deposited under ATCC Accession No. PTA-122228.

17. A plant, or part thereof, produced by growing the seed of claim 16 .

18. A method of vegetatively propagating the plant of claim 2 , the method comprising:

(a) collecting tissue capable of being propagated from a plant of lettuce cultivar Winter Heart, a representative sample of seed having been deposited under ATCC Accession No. PTA-122228;

(b) cultivating the tissue to obtain proliferated shoots;

(c) rooting the proliferated shoots to obtain rooted plantlets; and

(d) optionally, growing plants from the rooted plantlets.

19. Lettuce plantlet or plant obtained by the method of claim 18 , wherein the lettuce plantlet or plant expresses all of the physiological and morphological characteristics of lettuce cultivar Winter Heart.

20. A method of introducing a desired added trait into lettuce cultivar Winter Heart, the method comprising:

(a) crossing the plant of claim 2 with a lettuce plant that comprises a desired added trait to produce F1 progeny;

(b) selecting an F1 progeny that comprises the desired added trait;

(c) crossing the selected F1 progeny with lettuce cultivar Winter Heart to produce backcross progeny;

(d) selecting a backcross progeny comprising the desired added trait and essentially all of the physiological and morphological characteristics of the lettuce cultivar Winter Heart; and

(e) optionally repeating steps (c) and (d) one or more times to produce a plant derived from lettuce cultivar Winter Heart comprising a desired added trait and essentially all of the physiological and morphological characteristics of lettuce cultivar Winter Heart, wherein in step (c) the selected backcross progeny produced in step (d) is used in place of the selected F1 progeny of step (b).

21. The method of claim 20 , wherein the desired added trait is male sterility, pest resistance, insect resistance, disease resistance, herbicide resistance, or any combination thereof.

22. A lettuce plant produced by the method of claim 20 or a selfed progeny thereof, wherein the lettuce plant has the desired added trait.

23. Seed of the plant of claim 22 , wherein the seed produces a plant that has the desired added trait.

24. Seed that produces the plant of claim 22 .

25. A method of producing a plant of lettuce cultivar Winter Heart comprising a desired added trait, the method comprising introducing a transgene conferring the desired trait into the plant of claim 2 .

26. A lettuce plant produced by the method of claim 25 or a selfed progeny thereof, wherein the lettuce plant has the desired added trait.

27. Seed of the plant of claim 26 , wherein the seed produces a plant that has the desired added trait.

28. A method of determining a genotype of lettuce cultivar Winter Heart, the method comprising:

(a) obtaining a sample of nucleic acids from the plant of claim 2 ; and

(b) detecting a polymorphism in the nucleic acid sample.

29. A method of producing a lettuce leaf, the method comprising:

(a) growing the lettuce plant according to claim 2 to produce a lettuce leaf; and

(b) harvesting the lettuce leaf.

30. A method of producing a lettuce leaf, the method comprising:

(a) growing the lettuce plant according to claim 22 to produce a lettuce leaf; and

(b) harvesting the lettuce leaf.