Response of Ten Greenhouse Cucumber Cultivars to Root-Knot Nematode, Meloidogyne javanica

Ten greenhouse cucumber cultivars (Al-Biruni F1, Borhan, Donia, Ivor, Cluster5, Jiroft F1, Karim F1, Katrina, Negin, Terminator and Tunca) were screened for resistance against the root-knot nematode, Meloidogyne javanica under controlled environmental conditions in greenhouse. Seedlings of cucumber cultivars were inoculated with five J2s/g soil. Seven weeks after inoculation, the reaction of the cultivars was evaluated. According to the results, none of the tested cultivars were resistant to the nematode. Based on the stem-related parameters, cultivars Karim F1, Al-Biruni F1, Donia and Borhan, and regarding root-related parameters, cultivars Al-Biruni F1, Donia, Katrina and Ivor showed good performance against the nematode. Based on the nematode reproduction factors, cultivars Karim F1, Jiroft F1 and Ivor had the lowest number of nematode. Considering the resistance index, cultivar Karim F1 was evaluated as moderately susceptible, cultivars Jiroft F1 and Ivor as susceptible and the remaining cultivars were very susceptible. In cluster analysis of growth-related parameters, two separate groups were recognized. Cultivars Karim F1, Al-Biruni F1, Tunca and Borhan were classified in one group and five other in another group. Based on the results of cluster analysis of nematode-related parameters, maximum similarity was observed in a group composed of the cultivars Terminator, Ivor, Donia, Karim F1 and Jiroft F1. Two cultivars Biruni F1 and Negin were completely different from other cultivars.