Response of selected cucumber cultivars to Meloidogyne incognita |
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| Institution: | 1. Department of Plant Pathology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan;2. Green Belt Project, Department of Agriculture, Rawalpindi, Pakistan;3. Plant Pathology Section, Regional Agricultural Research Institute, Bahawalpur, Pakistan;1. Université Ibn Zohr, Faculté des Sciences d’Agadir, Laboratoire LBVRN, BP 8106, 80000 Agadir, Morocco;2. Université Ibn Zohr, Faculté des Sciences d’Agadir, Laboratoire LBMPV, BP 8106, 80000 Agadir, Morocco;3. INRA, CRRA, BP 513, Menara, Marrakech, Morocco;4. IRD, UMR CBGP, 755 Avenue du Campus Agropolis, CS30016, 34988 Montferrier-sur-Lez Cedex, France;5. IRD, UMR IMBE, Faculté des Sciences Saint Jérôme, Case 421, 13397 Marseille Cedex 20, France;6. Institut Agronomique et Vétérinaire Hassan II, Campus d’Agadir, Département de Protection des Plantes, BP 18/S, 80000 Agadir, Morocco;1. Dept. Plant and Soil Sciences, University of Delaware, Carvel Research and Education Center, 16483 County Seat Hwy, Georgetown, DE 19947, USA;2. Dept. of Entomology and Nematology, University of Florida, Gulf Coast Research and Education Center, 14625 CR 672, Wimauma, FL 33598, USA;3. Mycology and Nematology Genetic Diversity and Biology Laboratory, USDA ARS, Bldg. 010A, Rm. 112, BARC-West, Beltsville, MD 20705, USA;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China;2. Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, PR China;1. Department of Agricultural Production Sciences, School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, Jaboticabal, São Paulo, 14884-900, Brazil;2. Department of Genetics and Plant Breeding, School of Agronomy, Federal University of Goiás (UFG), Av. Esperança, s/n, Samambaia Campus, Goiânia, Goiás, 74690-900, Brazil |
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| Abstract: | Root-knot nematodes (Meloidogyne spp.) are one of the most destructive pathogens of vegetables. The cultivars resistant to root-knot nematodes have comparatively better crop yield than susceptible varieties and can be employed as a component of integrated nematode management. In the present study, 15 cultivars of cucumber (Cucumis sativus) were tested for their response to Meloidogyne incognita by inoculating with 3000 2nd stage juveniles of the nematode. All cultivars varied significantly in causing reductions in growth parameters over their controls. Likewise, all cultivars behaved differently regarding formation of galls and egg masses and reproductive factor. It was found that none of the tested cultivars was found immune or highly resistant. Long Green was the only cultivar which was found resistant against M. incognita as it showed minimum galls (8.2) and reductions in growth parameters. On the other hand, cultivars Mehran, Mirage, Thamin-II, and Royal Sluis were highly susceptible as evident by maximum galls (>100) on their roots and reductions in growth parameters. Similarly, the cultivars Green Wonder, Cucumber Citriolo and Poinsett were moderately susceptible (31–70 galls) while Babylon, Cobra and Falcon-560 (71–100 galls) were susceptible and reductions in growth parameters of these cultivars were less than those in highly susceptible cultivars. Four cultivars, Marketmore, Dynasty, Pioneer-II, and Summer Green, were rated as moderately resistant (11–30 galls) as these cultivars showed less damage by the nematode than moderately susceptible, susceptible and highly susceptible cultivars. |
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