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Effects of temperature on the duration of the life cycle of a Meloidogyne incognita population

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For more content, see Nematologica.

The generation time and reproduction of Meloidogyne incognita was studied under five soil temperatures. The life cycle was completed on tomato between average soil temperatures of 16.2°C and 30.0°C but not at 35.4°C. On the marigold(Tagetes hybrid) variety Polynema the life cycle was completed only at 30.0°C. Estimates for the base temperature (Tb) and the required heat sum (S) were 10.1°C and 400°C. day respectively. The thermal time relationship for completion of the life cycle of M. incognita is discussed in relation to those of other Meloidogyne species. Influence de la temperature sur la duree du cycle biologique d'une population de Meloidogyne incognita - La duree du cycle et la reproduction de Meloidogyne incognita ont ete etudiees a cinq temperatures. Sur tomate, le cycle peut s'accomplir a des temperatures moyennes du sol s'etageant de 16,2 a 30,0°C, mais non a 35,4°C. Sur oeillet d'Inde (hybride de Tagetes de la variete Polynema), le cycle ne s'accomplit qu'a 30,0°C. La temperature de base (Tb) et la demande thermique (S) sont estimees a, respectivement, 10,1°C et 400°C/jours. La relation temperature/temps relative a l'accomplissement du cycle biologique est discutee et comparee au cas des autres especes du genre.


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