Response of cucurbit rootstocks to Pythium aphanidermatum |
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| Institution: | 1. Directorate General of Agricultural & Livestock Research, Ministry of Agriculture, P O Box 50, A''Seeb 121, Oman;2. Department of Crop Sciences, Sultan Qaboos University, P O Box 34, Al Khod 123, Oman;1. Pharmaceutical Chemistry, School of Pharmacy, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa;2. Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa;1. Palacký University in Olomouc, Faculty of Science, Department of Botany, Šlechtitelů 27, 783 71 Olomouc-Holice, Czech Republic;2. Institute of Evolution, University of Haifa, Mt. Carmel, Haifa 3498838, Israel;1. Department of Biotechnology, Karpaga Vinayaga College of Engineering and Technology, Chennai 603308, India;2. Department of Biotechnology, St Joseph''s College of Engineering, Chennai 600119, India;3. Department of Industrial Biotechnology, Government College of Technology, Coimbatore 641013, India;4. Department of Chemical Engineering, Annamalai University, Chidambaram 608002, India;1. Key Laboratory of Mariculture & Stock Enhancement in North China''s Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 116023, China;2. Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;3. Centre for Climate Change Studies, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Salai, Solinganallur, Chennai, Tamil Nadu 600 119, India;1. Paris Descartes University, Sorbonne Paris Cité, Team vectors for molecular imaging and targeted therapy, CNRS UTCBS UMR8258, INSERM UTCBS U1022, Chimie ParisTech, PSL Research University, Paris, France;2. Center for Molecular Biophysics (CBM), CNRS UPR4301, Orléans, France;1. Centro de Bioactivos Químicos (CBQ), Universidad Central “Marta Abreu” de Las Villas (UCLV), Carretera Camajuaní km 5 1/2, Santa Clara, 54830, Villa Clara, Cuba;2. Departamento de Agronomía, ETSIAM, Universidad de Córdoba, Campus de Rabanales, Edif. C4, 14071, Córdoba, Spain;3. Centro de Investigaciones Agropecuarias (CIAP), Facultad de Ciencias Agropecuarias, Universidad Central “Marta Abreu” de Las Villas (UCLV), Carretera Camajuaní km 5 1/2, Santa Clara, 54830, Villa Clara, Cuba;4. Departamento de Agronomía, Facultad de Ciencias Agropecuarias, Universidad Central “Marta Abreu” de Las Villas (UCLV), Carretera Camajuaní km 5 1/2, Santa Clara, 54830, Villa Clara, Cuba;5. Facultad de Ciencias Naturales y de la Agricultura, Universidad Estatal del Sur de Manabí, Km ½ Vía Jipijapa-Noboa, Campus Los Angeles, Ecuador |
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| Abstract: | Damping-off and vine decline diseases affect most greenhouse cucumber crops in Oman, with losses frequently exceeding 25% of seedlings and adult plants. As a consequence of some recent reports that disease control using metalaxyl fungicides were ineffective, seven local and introduced rootstocks were assessed for their response to Pythium aphanidermatum. The rootstocks were also tested for grafting compatibility and production potential under greenhouse conditions. During artificial inoculation trials, no damping-off symptoms were observed in the Hercules and Titan varieties, ridge gourd or sponge gourd. In three separate greenhouse trials, Titan, Hercules and squash var. Magda showed no damping-off or vine decline symptoms up to 45 days after transplanting. When cucumber was grafted onto the seven rootstocks, no symptoms were observed in the cucumber plants grafted onto Titan and Hercules rootstocks, whereas the cucumber grafted onto the other rootstocks showed varying levels of damping-off and vine decline diseases (10–40%). The Titan and Hercules rootstocks significantly increased the vegetative growth and the fruit number, weight and length compared to the self-grafted cucumbers, non-grafted cucumbers and cucumbers that were grafted onto the other rootstocks (P < 0.05). To the best of our knowledge, this study is the first to examine the influence of grafting on the resistance to Pythium and on the vegetative growth and yield of greenhouse cucumbers. |
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