New Swiss chard variety designated RHdf-611 23 exhibits stability and uniformity.

A more efficient breeding against Cercospora leaf spot disease, or the development of new resistant lines, is enabled via the provision of the Cercospora resistance-mediating gene according to the invention; in particular, a dominant resistance effect in the target plant is evoked by the property of the identified gene alone. The Cercospora resistance-mediating gene, and embodiments of the present invention that are described in the preceding, offer additional applications, e.g., the use of the resistant gene allele in cis-genetic or trans-genetic approaches, with the goal of developing new resistant cultivars.

Provided herein are Beta vulgaris plants resistant to Cercospora. Also provided herein are methods for identifying Cercospora resistant Beta vulgaris plants, methods for providing Cercospora resistant Beta vulgaris plants and means for identifying Cercospora resistant Beta vulgaris plants. Specifically, provided herein are Cercospora-resistant Beta vulgaris plants including a first Cercospora resistance providing genomic fragment on chromosome 4, wherein said first Cercospora resistance providing genomic fragment includes at least one sequence from the group consisting of SEQ ID Nos. 1, 3, 5, 7, 9, 11, 13, and 15.