Lettuce variety 41-137 RZ, “delibes RZ”
AssigneeRijk Zw Aan Zaadteelt En Zaadhandel B.V.
InventorMaria Tomas Garcia
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Abstract
The present invention relates to a Lactuca sativa seed of the cos type designated 41-137 RZ, which exhibits a combination of traits including resistance against downy mildew (Bremia lactucae) races B1:1 to B1:28 and CA-I, CA-IIA, CA-IIB, CA-IV, CA-V, CA-VI, and CA-VIII, currant-lettuce aphid (Nasonovia ribisnigri) biotype Nr:0, root aphid (Pemphigus bursarius), and lettuce mosaic virus (LMV) race LMV:1. The present invention also relates to a Lactuca sativa plant produced by growing the 41-137 RZ seed. The invention further relates to methods for producing the lettuce cultivar, represented by lettuce variety 41-137 RZ.
Claims30
A lettuce plant designated 41-137 RZ, representative seed of which having been deposited under NCIMB Accession No. 41989.
A method of producing a lettuce cultivar of the cos type containing a combination of traits including resistance against downy mildew (Bremia lactucae) races B1:1 to B1:28 and CA-I, CA-IIA, CA-IIB, CA-IV, CA-V, CA-VI, and CA-VIII, currant-lettuce aphid (Nasonovia ribisnigri) biotype Nr:0, root aphid (Pemphigus bursarius), and lettuce mosaic virus (LMV) race LMV:1, representative seed of which having been deposited under NCIMB Accession No. 41989, comprising:
- crossing a mother lettuce plant with a father lettuce plant to produce a hybrid seed;
- growing said hybrid seed to produce a hybrid plant;
- selfing said hybrid plant to produce F2 progeny seed;
- growing said F2 progeny seed to produce F2-plants;
- selecting said F2-plants for exhibiting resistance against downy mildew (Bremia lactucae) races B1:1 to B1:28 and CA-I, CA-IIA, CA-IIB, CA-IV, CA-V, CA-VI, and CA-VIII, currant-lettuce aphid (Nasonovia ribisnigri) biotype Nr:0, root aphid (Pemphigus bursarius), and lettuce mosaic virus (LMV) race LMV:1,
- selfing said selected F2-plants to produce F3 progeny seed;
- growing said F3 progeny seed to produce F3-plants;
- and
- selecting F3-plants for exhibiting resistance against downy mildew (Bremia lactucae) races B1:1 to B1:28 and CA-I, CA-IIA, CA-IIB, CA-IV, CA-V, CA-VI, and CA-VIII, currant-lettuce aphid (Nasonovia ribisnigri) biotype Nr:0, root aphid (Pemphigus bursarius), and lettuce mosaic virus (LMV) race LMV:1, representative seed of which having been deposited under NCIMB Accession No. 41989, optionally followed by more selfing and selection steps.
A method of introducing a desired trait into a plant of lettuce variety 41-137 RZ comprising:
- (a) crossing a plant of lettuce variety 41-137 RZ, representative seed of which having been deposited under NCIMB Accession No. 41989, with a second lettuce plant that comprises the desired trait to produce F1 progeny;
- (b) selecting an F1 progeny that comprises the desired trait;
- (c) crossing the selected F1 progeny with a plant of lettuce variety 41-137 RZ, to produce backcross progeny and
- (d) selecting backcross progeny comprising the desired trait and physiological and morphological characteristics of a plant of lettuce variety 41-137 RZ, when grown in the same environmental conditions.
A method for producing a seed of a 41-137 RZ-derived lettuce plant comprising
- (a) crossing a plant of lettuce variety 41-137 RZ, representative seed of which having been deposited under NCIMB Accession No. 41989, with a second lettuce plant, and
- (b) whereby seed of a 41-137 RZ-derived lettuce plant forms.
Dependencies are inferred from the claim text.