Lettuce variety 41-233 RZ

A method of vegetatively propagating a plant of lettuce variety 41-233 RZ comprising (a) collecting tissue capable of being propagated from a plant of lettuce 41-233 RZ, a sample of seed of said variety having been deposited under NCIMB Accession No. 42756, (b) cultivating the tissue to obtain proliferated shoots and rooting the proliferated shoots to obtain rooted plantlets, and (c) optionally growing plants from the rooted plantlets.

A method for producing a progeny plant of lettuce variety 41-233 RZ, comprising crossing a plant designated 41-233 RZ, representative seed of which having been deposited under NCIMB Accession No. 42756, with itself or with another lettuce plant, harvesting the resultant seed, and growing said seed.

A method for producing a seed of a 41-233 RZ-derived lettuce plant comprising (a) crossing a plant of lettuce variety 41-233 RZ, a sample of seed of which having been deposited under NCIMB Accession No. 42756, with a second lettuce plant, and (b) whereby seed of a 41-233 RZ-derived lettuce plant forms.

A method of introducing at least one new trait into a plant of lettuce variety 41-233 RZ comprising:

• (a) crossing a plant of lettuce variety 41-233 RZ, a sample of seed of which having been deposited under NCIMB Accession No. 42756, with a second lettuce plant that comprises at least one new trait to produce progeny seed, (b) harvesting and planting the progeny seed to produce at least one progeny plant of a subsequent generation, wherein the progeny plant comprises the at least one new trait, (c) crossing the progeny plant with a plant of lettuce variety 41-233 RZ to produce backcross progeny seed, (d) harvesting and planting the backcross progeny seed to produce a backcross progeny plant, and (e) repeating steps (c) and (d) for at least three additional generations to produce a lettuce plant of variety 41-233 RZ comprising at least one new trait and otherwise all of the physiological and morphological characteristics of a plant of lettuce variety 41-233 RZ, when grown in the same environmental conditions.

A method of producing a plant of lettuce variety 41-233 RZ comprising at least one new trait, the method comprising introducing a mutation or transgene conferring the at least one new trait into a plant of lettuce variety 41-233 RZ, wherein a sample of seed of said variety has been deposited under NCIMB Accession No. 42756.

A lettuce plant designated 41-233 RZ, representative seed of which having been deposited under NCIMB Accession No. 42756, further comprising a transgene.