Cos for mechanical harvest
AssigneeRijk Zwaan Zaadteelt En Zaadhandel B.V.
InventorAad Ammerlaan
Life of this patent
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Abstract
The present invention relates to a Lactuca sativa L. var. longifolia Lam seed which has a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn. A specific embodiment is designated 41-69 RZ, referred to as Actarus. The present invention also relates to a Lactuca sativa L. var. longifolia Lam plant produced by growing the “41-69 RZ” (“Actarus”) seed. The invention further relates to methods for producing the lettuce cultivar, represented by lettuce variety 41-69 RZ.
Claims62
Lettuce plant of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, wherein said plant has leaves with a solid main vein and narrow base leaves.
Lettuce plant, of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, wherein said plant has leaves with a solid main vein and narrow base leaves, and dark green outer leaves.
A method of producing a lettuce cultivar of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, having leaves with a solid main vein and narrow base leaves 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 seed to produce F2 progeny seed;
- selecting said F2 plants for having leaves with a solid main vein and narrow base leaves;
- selfing said F2-plants to produce F3 families;
- selecting said F3 families for having leaves with a solid main vein and narrow base leaves;
- selecting F3 plants out of said F3 families for having leaves with a solid main vein and narrow base leaves;
- repeating the last three actions mentioned in subsequent generations, until genetic uniformity is reached within selected families.
Lettuce plant, of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, wherein said plant has leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn.
A method of producing a lettuce cultivar of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, having leaves with a solid main vein and narrow base leaves, and dark green outer leaves 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 seed to produce F2 progeny seed;
- selecting said F2 plants for having leaves with a solid main vein and narrow base leaves, and dark green outer leaves;
- selfing said F2-plants to produce F3 families;
- selecting said F3 families for having leaves with a solid main vein and narrow base leaves, and dark green outer leaves;
- selecting F3 plants out of said F3 families for having leaves with a solid main vein and narrow base leaves, and dark green outer leaves;
- repeating the last three actions mentioned in subsequent generations, until genetic uniformity is reached within selected families.
Lettuce plant designated 41-69 RZ, referred to as Actarus, representative seed of which having been deposited under NCIMB Accession No. 41440, wherein said plant has leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn.
A method of producing a lettuce cultivar of the romaine or cos type, i.e. Lactuca sativa L. var. longifolia Lam, having leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn, 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 seed to produce F2 progeny seed;
- selecting said F2 plants for having leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn;
- selfing said F2-plants to produce F3 families;
- selecting said F3 families for having leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn;
- selecting F3 plants out of said F3 families for having leaves with a solid main vein and narrow base leaves, dark green outer leaves, short core, absence of fringe burn, and absence of tipburn;
- repeating the last three actions mentioned in subsequent generations, until genetic uniformity is reached within selected families.
Dependencies are inferred from the claim text.