Rijk Zwaan Zaadteelt En Zaadhandel B.v.

Cornelis Van Der Maas

Cornelis Haaring

The present invention relates to a mutant ACO2 gene allele, which leads to a plant of the family of Cucurbitacea, in particular a cucumber plant producing only male flowers. The invention also relates to a plant of the family of Cucurbitacea, in particular a cucumber plant, comprising the mutant ACO2 gene allele. The mutant ACO2 allele provides plants that only produce male flowers. The invention further relates to the use of the mutant allele of the ACO2 gene for the identification and development of a plant of the family of Cucurbitacea, in particular a cucumber plant, producing only male flowers.

Mutant allele of the ACO2 gene

The present invention relates to a cucumber plant (L.) that is resistant topv., a pathogen that causes angular leaf spot disease in cucumber. The invention further relates to markers linked to the resistance and the use of markers to identify resistant plants. The invention also relates to seed and progeny of such plants and to propagation material derived from such plants and for obtaining such plants. Furthermore, the invention relates to methods for producing, identifying and selectingresistant cucumber plants, and for producing hybrid plant seed. The invention further relates to the use of a gene and/or QTLs and sequences thereof to identify/selectresistant cucumber plants.

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De Lier, Netherlands

Cornelis Van Der Maas