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Journal of Entomology
  Year: 2006 | Volume: 3 | Issue: 1 | Page No.: 1-8
DOI: 10.3923/je.2006.1.8
Evaluation of the Damage Caused by Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) on Cucumber Leaves (Cucumis sativus L., F1 Kamaron)
P.N. Deligeorgidis, C.G. Ipsilandis , M. Vaiopoulou , N.P. Deligeorgidis , D. Petkou and E. Simopoulos

Abstract:
During the present study, an evaluation of damage caused by Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) on cucumber leaves is given. The experiment took place in May 1999. For this purpose, 50 cucumber plants (Cucumis sativus L., F1 Kamaron) were used. The plants grew in small pots covered by plastic cages in a glasshouse. Plants with the first real leaf developed (approximately 14 cm2), were divided in Groups I-V, each consisting of 10 plants. On each plant of the first four Groups, 5, 15, 25 and 35 females of F. occidentalis were released respectively, while Group V was used as control. Plants remained covered by the plastic cages in the glasshouse throughout the experiment for 18 days. The number of thrips individuals placed on each plant remained stable during the study. Results showed that, the damage on cucumber leaves increases relatively with the number of thrips. The damaged leaf area was 1.02 cm2 at 5 thrips individuals, increasing at 7.81 cm2 at 35 thrips individuals. Photosynthetic capability was also reduced. The chlorophyll content estimation in SPAD units was almost intact when initial number of thrips was 5 individuals in comparison to the control, but readings of the instrument decreased rapidly in greater initial population.
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How to cite this article:

P.N. Deligeorgidis, C.G. Ipsilandis , M. Vaiopoulou , N.P. Deligeorgidis , D. Petkou and E. Simopoulos , 2006. Evaluation of the Damage Caused by Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) on Cucumber Leaves (Cucumis sativus L., F1 Kamaron). Journal of Entomology, 3: 1-8.

DOI: 10.3923/je.2006.1.8

URL: https://scialert.net/abstract/?doi=je.2006.1.8

 
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