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Biological effects of some isolatedAbrus precatorius L. alkaloids towardsTetranychus urticae Koch

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Abstract

Three main alkaloids isolated fromAbrus precatorius L. seeds have been tested againstTetranychus urticae Koch. Hypaphorine was the most efficient alkaloid isolated fromA. precatorius seeds against the two-spotted spider mite where the pre-oviposition period was relatively elongated and the oviposition period was significantly shortened in comparison to the other two isolated alkaloids tested. Also, the fecundity of the females was drastically reduced in all treatments in comparison to the control.

Zusammenfassung

Es wurden die wichtigsten 3 Alkaloide aus den Samen vonAbrus precatorius gewonnen und im Labor gegen die SpinnmilbeTetranychus urticae angewandt. Hypophorine erwies sich als wirksamstes Alkaloid. Es führte zur Verlängerung der Prä-Ovipositionsperiode und zur Verkürzung der Eilegeperiode im Vergleich zu den zwei anderen Alkaloiden. Auch wurde die Fruchtbarkeit der Weibchen drastisch reduziert, und zwar durch alle 3 Wirkstoffe im Vergleich zur Kontrolle.

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Authors and Affiliations

  1. Dept. of Plant Protection, National Research Centre, Tahrir St., Dokki, Cairo, Egypt

    N. Z. Dimetry, A. S. Reda & S. A. A. Amer

  2. Pharm. Sci. Dept., National Research Centre, Tahrir St., Dokki, Cairo, Egypt

    S. El-Gengaihi

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  1. N. Z. Dimetry
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  2. S. El-Gengaihi
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  3. A. S. Reda
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  4. S. A. A. Amer
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Dimetry, N.Z., El-Gengaihi, S., Reda, A.S. et al. Biological effects of some isolatedAbrus precatorius L. alkaloids towardsTetranychus urticae Koch. Anz. Schädlingskde., Pflanzenschutz, Umweltschutz 65, 99–101 (1992). https://doi.org/10.1007/BF01905054

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