Abd-Elgawad, M., Koura, F., Abd El-Wahab, A., Abd-El-Khair, H., Montasser, S., Hammam, M. (2014). Effect of Tylenchulus semipenetrans inoculum levels on itsdevelopment, reproduction potential, and damage to infected-Volkamariana seedlings. Egyptian Journal of Agronematology, 13(1), 95-106. doi: 10.21608/ejaj.2014.63687
Mahfouz Abd-Elgawad; Faika Koura; Ahmed Abd El-Wahab; Hassan Abd-El-Khair; Sayed Montasser; Moustafa Hammam. "Effect of Tylenchulus semipenetrans inoculum levels on itsdevelopment, reproduction potential, and damage to infected-Volkamariana seedlings". Egyptian Journal of Agronematology, 13, 1, 2014, 95-106. doi: 10.21608/ejaj.2014.63687
Abd-Elgawad, M., Koura, F., Abd El-Wahab, A., Abd-El-Khair, H., Montasser, S., Hammam, M. (2014). 'Effect of Tylenchulus semipenetrans inoculum levels on itsdevelopment, reproduction potential, and damage to infected-Volkamariana seedlings', Egyptian Journal of Agronematology, 13(1), pp. 95-106. doi: 10.21608/ejaj.2014.63687
Abd-Elgawad, M., Koura, F., Abd El-Wahab, A., Abd-El-Khair, H., Montasser, S., Hammam, M. Effect of Tylenchulus semipenetrans inoculum levels on itsdevelopment, reproduction potential, and damage to infected-Volkamariana seedlings. Egyptian Journal of Agronematology, 2014; 13(1): 95-106. doi: 10.21608/ejaj.2014.63687
Effect of Tylenchulus semipenetrans inoculum levels on itsdevelopment, reproduction potential, and damage to infected-Volkamariana seedlings
1Phytopathology Department, National Research Center, El-Tahrir St., Dokki 12622, Giza, Egypt
2Department of Agricultural Zoology and Nematology, Factulty of Agriculture, Al-Azhar University, Egypt.
3Department of Agricultural Zoology and Nematology, Factulty of Agriculture, Al-Azhar University, Egypt
4Phytopathology Department, National Research Center, El-Tahrir St., Dokki 12622, Giza, Egypt.
Abstract
Six inocula 0, 5000, 10000, 15000, 20000 and 25000 second stage juveniles (J2) and males/pot of T. semipenetrans were tested on 1.5-year-old nematode-free seedlings of Citrus volkameriana. The inoculated seedlings were grown in plastic pots containing about 5 Kg of sterilized sandy clay soil (2:1) under greenhouse conditions for a year. Nematode reproduction and host growth were both affected by the initial inoculum levels. The maximum reduction percentage of shoot length (38.3%), fresh (25.9%), and dry (44.7%) weight as well as root length (36%) and fresh weight (30.5%) were recorded at inoculum levels 20000, 20000, 15000, 25000 and 15000 J2 and males/seedling; respectively. On the other hand, the maximum nematode final population of J2 and males (95515), females (1442), and eggmasses (820) were obtained at initial inoculum levels of 20000, 20000, and 15000 J2 and males/seedling; respectively. A negative relationship occurred between the nematode inoculum level and the rate of reproduction.
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