Brassica oleracea plants with downy mildew resistant curds or heads
AssigneeSeminis Vegetable Seeds, Inc.
InventorsMeinardus Boon, Franciscus van den Bosch, Benjamin C. Hunter, Gerard N. Koorevaar
Life of this patent
Estimating the term…
Abstract
The present disclosure provides Brassica oleracea plants having curds or heads exhibiting increased resistance to downy mildew. Such plants may comprise novel introgressed genomic regions associated with disease resistance from Brassica oleracea MYCOCLP. In certain aspects, compositions, including novel polymorphic markers and methods for producing, breeding, identifying, and selecting plants or germplasm with a disease resistance phenotype are provided.
Claims22
A Brassica oleracea plant of a cultivated variety, the plant comprising a first introgressed allele and a second introgressed allele on chromosome 3, wherein said first introgressed allele or said second introgressed allele confers to a curd or head of said plant increased resistance to downy mildew compared to a plant not comprising said first introgressed allele and said second introgressed allele, wherein said first introgressed allele is flanked in the genome of said plant by marker locus M19 (SEQ ID NO:2) and marker locus M20 (SEQ ID NO:3) on chromosome 3 or wherein said second introgressed allele is flanked in the genome of said plant by marker locus M31 (SEQ ID NO:4) and marker locus M44 (SEQ ID NO:
- 16) on chromosome 3, and wherein a sample of seed comprising said first introgressed allele and said second introgressed allele was deposited under ATCC Accession Number PTA-124338.
A seed of a Brassica oleracea of a cultivated variety comprising an introgression fragment comprising a first chromosomal segment on chromosome 3 from Brassica oleracea MYCOCLP flanked by marker M19 (SEQ ID NO:
- 2) and marker M20 (SEQ ID NO:3) and a second chromosomal segment on chromosome 3 from Brassica oleracea MYCOCLP flanked by marker M31 (SEQ ID NO:
- 4) and marker M44 (SEQ ID NO:
- 16), wherein a sample of seed comprising said first chromosomal segment and said second chromosomal segment was deposited under ATCC Accession Number PTA-124338.
A method for producing a cultivated variety of a Brassica oleracea plant with a curd or head having improved resistance to downy mildew, comprising introgressing into said plant variety a first chromosomal segment and a second chromosomal segment from Brassica oleracea MYCOCLP on chromosome 3 that confers improved resistance to downy mildew relative to a plant lacking said introgression, wherein the first chromosomal segment is flanked by marker M19 (SEQ ID NO:
- 2) and marker M20 (SEQ ID NO:3) and the second chromosomal segment is flanked by marker M31 (SEQ ID NO:
- 4) and marker M44 (SEQ ID NO:
- 16), and wherein a sample of seed of said Brassica oleracea MYCOCLP was deposited under ATCC Accession Number PTA-124338.
Dependencies are inferred from the claim text.