Effect of treated cucumber by cytokinin hormone on the infestation of Aphis gossypii (Hemiptera: Aphididae)‎ and Tetranychus urtiace (Acari: Tetranychidae)‎ under glasshouse

Abstract EN

Cucumber (Cucumis sativus L.) is considered as one of the most important fresh consumed vegetables in Egypt and it is used to cultivate under open field conditions and greenhouse.

The aim of this research work is to study effect of treated cucumber plants C.

sativus by different concentrations of cytokinin hormone CKs (25 ppm, 45ppm and 65 ppm) on the infestation by Aphis gossypii Glover (Hemiptera: Aphididae) and Tetranychus urtiace Koch.

(Acari: Tetranychidae) at two locations in Giza and Qalubiya Governorates during 2018 season under glasshouse conditions.

Also, this research work was carried out to study effect of treated cucumber plants by the same concentrations of the same hormone on the morphological characteristics and internal components of treated cucumber plants.

Results obtained showed that cucumber plants treated with small concentration of CKs (25 ppm) were lower infestation by both A.

gossypii and T.

urticae compared to control.

While cucumber plants treated with medium concentration of CKs (45ppm) were had no significant differences in the infestation by both A.

gossypii and T.

urticae compared to control.

On the other hand cucumber plants treated with high concentration of CKs (65ppm) were higher infestation by both two pests compared to control.

Also, results obtained showed that treated cucumber plants with small concentration of CKs improved morphological characteristics and internal components of these plants compared to control, while treated cucumber plants with medium concentration of the hormone had no significant differences on the morphological characteristics and internal components of these plants compared to control.

Treated cucumber plants with high concentration of the same hormone had badly effect on the morphological characteristics and internal components of these plants compared to control.