Lettuce variety 79-190 or 79-107 RZ
AssigneeRijk Zwaan Zaadteelt En Zaadhandel B.V.
InventorsCornelis Marinus Moor, Hubertus Joseph Wilhelmus Crins
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Abstract
The present invention relates to a Lactuca sativa seed designated 79-190 RZ or 79-107 RZ, which exhibits resistance to downy mildew (Bremia lactucae Regel.) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), as well as an extraordinary high number of red-colored, elongated leaves of substantially equal size. The present invention also relates to a Lactuca sativa plant produced by growing the 79-190 RZ or 79-107 RZ seed. The invention further relates to methods for producing the lettuce cultivar, represented by lettuce variety 79-190 RZ or 79-107 RZ.
Claims32
A lettuce plant exhibiting a combination of traits including resistance to downy mildew (Bremia lactucae Regel) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), and a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, wherein leaves are red colored and elongated, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871.
A lettuce plant designated 79-190 RZ or 79-107 RZ, representative seed of which having been deposited under NCIMB Accession No. 41839 and NCIMB Accession No 41871, respectively.
A method of producing a lettuce cultivar containing a combination of traits including resistance against downy mildew (Bremia lactucae Regel) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), and a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, wherein the leaves are red colored and elongated, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871, 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;
- selecting said F2-plants for exhibiting resistance to downy mildew (Bremia lactucae Regel), currant-lettuce aphid (Nasonovia ribisnigri), and a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, wherein the leaves are red colored and elongated, and, selfing said selected F2-plants to produce F3 progeny seed;
- selecting F3-plants for exhibiting against downy mildew (Bremia lactucae Regel) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), and a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, wherein the leaves are red colored and elongated, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871, optionally followed by more selfing and selection steps.
A lettuce plant having morphological and/or physiological characteristics of a lettuce plant, representative seed of which having been deposited under NCIMB Accession No. 41839 and wherein said lettuce plant exhibits a combination of traits including resistance to downy mildew (Bremia lactucae Regel) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), and a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, wherein the leaves are red colored and elongated.
A method of introducing a desired trait into a plant of lettuce variety 79-190 RZ or 79-107 RZ comprising:
- (a) crossing a plant of lettuce variety 79-190 RZ or 79-107 RZ, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871, 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 79-190 RZ or 79-107 RZ, to produce backcross progeny and (d) selecting backcross progeny comprising the desired trait and the physiological and morphological characteristics of a plant of lettuce variety 79-190 RZ or 79-107 RZ, when grown in the same environmental conditions.
A method for producing a seed of a 79-190 RZ or 79-107 RZ-derived lettuce plant comprising (a) crossing a plant of lettuce variety 79-190 RZ or 79-107 RZ, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871, with a second lettuce plant, and (b) whereby seed of a 79-190 RZ or 79-107 RZ-derived lettuce plant form.
A method of determining the genotype of a plant of lettuce variety 79-190 RZ or 79-107 RZ, representative seed of which has been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871, or a first generation progeny thereof, comprising obtaining a sample of nucleic acids from said plant and detecting in said nucleic acids a plurality of polymorphisms, wherein the plurality of polymorphisms are indicative of and/or give rise to the expression of the morphological and physiological characteristics of lettuce variety 79-190 RZ or 79-107 RZ.
A lettuce plant exhibiting a combination of traits comprising red-colored, elongated leaves, a leaf trait of 2 to 4 times more leaves of substantially equal size than a lettuce plant not having the leaf trait, resistance to downy mildew (Bremia lactucae Regel) races B1:1 to B1:28 and currant-lettuce aphid (Nasonovia ribisnigri), and has genetic material for so exhibiting the combination of traits;
- wherein the genetic information is as contained in a plant, representative seed of which having been deposited under NCIMB Accession No. 41839 or NCIMB Accession No. 41871.
Dependencies are inferred from the claim text.