Hamza Rathi, M., of Biology, D., Univ, B., of Science, C., Univ, D., Shnawa Al- Zubaidi, F. (2013). The effects of crude alkaloid extracted for Nerium oleander L. Leaves on biological performance of Bemisia tabaci Genn. ( Homoptera: Aleyrodida). , 13(1), 1-10.
Munther Hamza Rathi; Dept of Biology; Baghdad Univ; College of Science; Diyala Univ; Fawzi Shnawa Al- Zubaidi. "The effects of crude alkaloid extracted for Nerium oleander L. Leaves on biological performance of Bemisia tabaci Genn. ( Homoptera: Aleyrodida)". , 13, 1, 2013, 1-10.
Hamza Rathi, M., of Biology, D., Univ, B., of Science, C., Univ, D., Shnawa Al- Zubaidi, F. (2013). 'The effects of crude alkaloid extracted for Nerium oleander L. Leaves on biological performance of Bemisia tabaci Genn. ( Homoptera: Aleyrodida)', , 13(1), pp. 1-10.
Hamza Rathi, M., of Biology, D., Univ, B., of Science, C., Univ, D., Shnawa Al- Zubaidi, F. The effects of crude alkaloid extracted for Nerium oleander L. Leaves on biological performance of Bemisia tabaci Genn. ( Homoptera: Aleyrodida). , 2013; 13(1): 1-10.

The effects of crude alkaloid extracted for Nerium oleander L. Leaves on biological performance of Bemisia tabaci Genn. ( Homoptera: Aleyrodida)

journal of al-qadisiyah for pure science(quarterly)
Article 1, Volume 13, Issue 1, 2013, Pages 1-10    PDF (0 K)
Authors
Munther Hamza Rathi; Dept of Biology; Baghdad Univ; College of Science; Diyala Univ; Fawzi Shnawa Al- Zubaidi
Abstract
Summary
In laboratory bioassays to determine the toxicity of crude alkaloid extracts of Nerium oleander leaves to whitefly Bemisia tabaci . Crude alkaloids applied at concentrations of 0.1 , 0. 2 , 0.5 , 1 , 2 % . The egg was generally the least susceptible stage to all test treatments.The results indicated that the concentration of 2 % was the most effective . At this concentration eggs mortality reached 51.35 % in crude alkaloids , differences in nymphal mortality according to age was observed at all concentrations of alkaloid extract , the first larval instar and second namphal stadium had higher mortality when treated with alkaloid extract at concentrations of 1% and 2% than third nymphal stadium . Pupal and adults mortality reached 84.66 % and 71.84% when treated with crude alkaloids at concentration of 2% respectively .Cumulative mortality reached 100 % at concentration of 1 % and 2 % in second and third nymphal stadia when treated with crude alkaloids . Development time of immature stages of B. tabaci also , affected by the application of crude alkaloids extracts of N. oleander leaves , generally development period prolonged in all treatments of alkaloids as compared with control treatment .
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