Rizk S. A.
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M.I. Haiba
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N.H. EL-Sinary
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ABSTRACT
The combined effect of ten plants (from eight different families) and gamma radiations were tested on larvae of potato tubermoth (P. T. M.), Phthorimaea operculella (Zeller). The insecticidal effect of different plants and mortality percentages were recorded on third larval instar. Results indicated that Matricaria chamomilla scored the higher mortality percentage followed by Lupinus termis. Newly hatched larvae were used to evaluate the effect of ten plants on the percentages of infestation, pupation, emergence and sex ratio. Matricaria chamomilla and Lupinus termis were completely toxic to (P. T. M.) larvae, followed by Anethum gravelones and Apium graveolens. The other plants succeeded to minimize the hazards and reduced viability of P. operculella. When potato tubers were irradiated (100 Gy) the lethal effect of the ten plants was increased and it inhibited the sprouting. Data showed that Trigonella foenum, unexpectedly, did not have toxic effects on (P. T. M.) larvae and it helped the larvae to complete the life cycle normally as control and to tolerate the radiation effect.
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How to cite this article
Rizk S. A., M.I. Haiba and N.H. EL-Sinary, 2001. Combined Effect of Gamma Irradiation and Ten Plants on Potato Tubermoth Phthorimaea operculella (Zeller) Larval Mortality. Pakistan Journal of Biological Sciences, 4: 1228-1231.
DOI: 10.3923/pjbs.2001.1228.1231
URL: https://scialert.net/abstract/?doi=pjbs.2001.1228.1231
DOI: 10.3923/pjbs.2001.1228.1231
URL: https://scialert.net/abstract/?doi=pjbs.2001.1228.1231
REFERENCES
- Lichtenstein, E.P., T.T. Linag, K.R. Schulz, H.K. Schnoes and G.T. Carter, 1997. Insecticidal and synergistic components isolated from Anethum gravelones plants. J. Agric. Food Chem., 22: 658-664.
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