Zucchini yellow mosaic virus (ZYMV) is an important non- persistent virus causing high squash production losses in Egypt. Aphis gossypii Glover and Myzus persicae Sulazer insects have high efficiency of ZYMV transmission from infected squash plants to healthy ones in Egypt,in advance of their rapid spreading. ZYMV was isolated from naturally infected squash plants collected from two locations (Sennoris & Fayoum), at Fayoum governorate. Virus identification was done by serological tests (ELISA) using four different antiserums. Virus was transmitted to healthy squash plants by mechanical transmission and by using the two aphid insects. Fecundity and life span of two aphids and forms (alate and apterous) were studied. ELISA test had relay that the virus was ZYMV. Typical symptoms of virus were observed by mechanical and aphid insect's inoculation, yellow mosaic, necrosis, leaf curling, blisters stunting, deformation, reduction in leaf size and knobbed fruits (sever malformation). Fecundity and life span of Aphis gossypii were higher than those of Myzus persicae on infectedsquash plants compared with healthy, respectively.The reducing aphid insects population is recommended in order to decreasing losses caused by ZYMV infection (as their ability of transmission), in addition of removing the infected plants continuously which considered as a source if virus inoculum

Author Name: Hamada M. Abd El-Wareth1; Hoda M. H. Ahmed2

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Keywords: Aphis gossypii; Myzus persicae; Zucchini Yellow Mosaic Virus; squash plants

ISSN: 2090-0872

EISSN: 2090-0880

EOI/DOI: 10.21608/EAJBSG.2017.16332

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