ISHS Acta Horticulturae 510: VII Eucarpia Meeting on Cucurbit Genetics and Breeding
RESISTANCE TO DOWNY MILDEW, PSEUDOPERONOSPORA CUBENSIS, IN CUCUMBERS |
| Authors: | L. Petrov, K. Boogert, L. Sheck, A. Baider, E. Rubin, Y. Cohen |
| Keywords: | Cucumis sativus, disease resistance, genetics |
| Abstract:
Two inbred lines and five F1 hybrids of cucumber resistant to downy mildew were evaluated for resistance in growth chambers and the field. Best-performing plants were selfed and S4 plants were crossed with a high-yielding, parthenocarpic, susceptible partner. Resistance in J-13, a derivative of Wisconsin 2843, was found to be controlled by incompletely dominant gene(s). Resistance was expressed as small, chlorotic, water-soaked lesions with negligible sporulation of the fungus. No breakdown of this resistance was observed at 12°C. | |
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