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Lebenszyklus von Meloidogyne incognita acrita (Kofoid & White) Chitwood (Nematoda, Heteroderidae) in Wurzeln der Baumwolle, Gossypium barbadense L

Life cycle of the Root-Knot Nematode Meloidogyne incognita acrita (Kofoid & White) Chitwood (Nematoda, Heteroderidae) in cotton

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Abstract

The incubation period ofM. incognita acrita eggs took 24–72 hours till the appearance of the second larval stage hatching from eggs in the laboratory at 25±5°C and at 60±5 R. H. The second larval stage, was observed in cotton roots 48 hours after the addition of it to soil beside cotton seedlings. The 3rd and 4th larval stage and adult female were observed in cotton roots 7, 11, and 24 days, respectively, after the addition of second larval stage to soil beside cotton seedlings. The total life cycle ofM. incognita acrita on cotton, (Gossypium barbadense) lasted for 33–38 days, at 25±5°C and at 60±5 R. H.

Zusammenfassung

Es wurden die Entwicklungszeiten der Stadien des WurzelnematodenMeloidogyne incognita acrita in Baumwoll-Wurzeln in Ägypten festgestellt. Die den Wurzelbefall tätigenden Zweitlarven waren 24 Stunden nach Hinzugabe zu den Sämlingen zu 50,0% und nach 72 Stunden zu 86,7% in die Wurzeln eingedrungen. Die L3 traten ab 7., die L4 ab 11., die adulten Weibchen ab 24. und die Eipakete ab 32. Tag nach Einsetzen der L2 auf. Das ergibt eine Gesamtentwicklung von Ei zu Ei von i. M. 35,5 Tagen.

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Abdel-Hamid, M.E., Salem, F.M., Hamdia, H.R. et al. Lebenszyklus von Meloidogyne incognita acrita (Kofoid & White) Chitwood (Nematoda, Heteroderidae) in Wurzeln der Baumwolle, Gossypium barbadense L. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 56, 153–154 (1983). https://doi.org/10.1007/BF01908777

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  • DOI: https://doi.org/10.1007/BF01908777

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