Infection and Egg Development of the Root-Knot Nematode Meloidogyne javanica on Oleander Nerium oleander

Adel, R.M. and F.K. Aljuboori. 2022. Infection and Egg Development of the Root-Knot Nematode Meloidogyne javanica on Oleander Nerium oleander. Arab Journal of Plant Protection, 40(4): 293-298. https://doi.org/10.22268/AJPP40.4.293298 The identification and first record of Nerium oleander infection with root-knot nematode M. javanica was confirmed by the PCR test using the pair of species-specific primers (Fjav and Rjav). Symptoms of the Oleander root-knot disease are similar to those caused by these nematodes on other flowering plants. The results of the study described the stages of embryo development inside the egg and until hatching under laboratory conditions. The difference in egg shape index ranged from 35.8 to 87.9, whereas the dominant egg shape index was between 44.5 and 48.8. Keywords: Nerium oleander, eggs, embryo development, root knot nematode, Meloidogyne javanica