Methods for coupling resistance alleles in tomato
AssigneeSeminis Vegetable Seeds, Inc.
InventorsJacobus Gerardus Joannes Hoogstraten, Carl J. Braun, III
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Abstract
A Lycopersicon esculentum plant comprising within its genome at least one tomato yellow leaf curl virus (TYLCV) resistance allele and at least one root knot nematode resistance allele, characterized in that the resistance alleles are present in coupling phase at different loci on one chromosome and in that the plant is highly resistant both against TYLCV and to at least one root knot nematode species selected from the group consisting of Meloidogyne arenaria, Meloidogyne incognita and Meloidogyne javanica.
Claims28
A method of growing a seed from a first Lycopersicon esculentum plant comprising:
- a) providing said seed of said first Lycopersicon esculentum plant wherein said plant comprises within its genome at least one Ty-1 tomato yellow leaf curl virus (TYLCV) resistance allele and at least one Mi-1 root knot nematode resistance allele, wherein the at least one Ty-1 allele and the at least one Mi-1 allele are present in the coupling phase at different loci on one chromosome and said plant is resistant against TYLCV and resistant against at least one root knot nematode species selected from the group consisting of Meloidogyne arenaria, Meloidogyne incognita and Meloidogyne javanica;
- and
- b) growing said seed to provide a second Lycopersicon esculentum plant having a fruit.
A method of making a disease resistant L. esculentum plant comprising the steps of:
- a. obtaining a first parent L. esculentum plant comprising within its genome an introgression at the Ty locus from Lycopersicon chilense on chromosome 6;
- b. crossing said first parent L. esculentum plant with a second parent L. esculentum plant that comprises an Mi-1 introgression from Lycopersicon peruvianum on said chromosome 6;
- and
- c. selecting a progeny L. esculentum plant comprising said introgressions from L. chilense and L. peruvianum coupled in cis on chromosome 6.
A method of making a disease resistant L. esculentum plant comprising the steps of:
- a. obtaining a first parent L. esculentum plant comprising within its genome a Ty-1 introgression from Lycopersicon chilense on chromosome 6;
- b. crossing said first parent L. esculentum plant with a second parent L. esculentum plant that comprises a Mi-1 introgression from Lycopersicon peruvianum on said chromosome 6;
- and
- c. selecting a progeny L. esculentum plant comprising said Ty-1 introgression and said Mi-1 introgression coupled in cis.
A method of producing a Lycopersicon esculentum fruit comprising:
- a) planting a Lycopersicon esculentum seed wherein said seed comprises within its genome at least one Ty-1 tomato yellow leaf curl virus (TYLCV) resistance allele and at least one Mi-1 root knot nematode resistance allele, wherein the at least one Ty-1 allele and the at least one Mi-1 allele are present in the coupling phase at different loci on one chromosome;
- and
- b) growing said seed to provide a Lycopersicon esculentum plant having a fruit, wherein said Lycopersicon esculentum plant is resistant against TYLCV and resistant against at least one root knot nematode species selected from the group consisting of Meloidogyne arenaria, Meloidogyne incognita and Meloidogyne javanica.
Dependencies are inferred from the claim text.