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Abstract ▼ AI-Helper

Survey on incidence of Phytophthora rot and utilization of cultivar resistance to Phytophthora capsici Leon. could provide the basis for viable management strategy against the disease, a serious threat in squash (Cucurbita maxima Duch.) production. Our objectives were to survey the Phytophthora rot ...

Survey on incidence of Phytophthora rot and utilization of cultivar resistance to Phytophthora capsici Leon. could provide the basis for viable management strategy against the disease, a serious threat in squash (Cucurbita maxima Duch.) production. Our objectives were to survey the Phytophthora rot of squash caused by P. capsici in field and to evaluate squash cultivars or lines against the pathogen under a controlled condition. In Gyeonggi province, Phytophthora rot began to occur about 70 days after transplanting and continuously increased until harvest., It was more severe in creeping stem training method than upright one. Disease severity increased with planting density of squash plants. Fruit setting position significantly affected disease severity that lower fruits were severely infected than upper fruits. There were significant differences in virulence among isolates P. capsici, although they were quantitative. Disease index showed significant differences among squash cultivars or lines in their responses to P. capsici. Further studies under natural field conditions are required for further understanding of the interactions between P. capsici and squash cultivars.

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