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Diversity and incidence of plant-parasitic nematodes associated with saffron (Crocus sativus L.) in Morocco and their relationship with soil physicochemical properties

In: Nematology
Authors:
Fouad Mokrini Biotechnology Unit, Regional Centre of Agricultural Research, National Institute of Agricultural Research (INRA), Rabat, Morocco

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Salah-Eddine Laasli Biotechnology Unit, Regional Centre of Agricultural Research, National Institute of Agricultural Research (INRA), Rabat, Morocco
Faculty of Science, Mohammed V University, Laboratory of Botany, Mycology and Environment, Rabat, Morocco

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Youssef Karra Biotechnology Unit, Regional Centre of Agricultural Research, National Institute of Agricultural Research (INRA), Rabat, Morocco

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Aicha El Aissami Faculty of Science, Mohammed V University, Laboratory of Botany, Mycology and Environment, Rabat, Morocco

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Abdelfattah A. Dababat International Maize and Wheat Improvement Center (CIMMYT), P.K. 39 06511, Emek, Ankara, Turkey

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Summary

Saffron (Crocus sativus) fields in Morocco’s Taliouine and Taznakht regions were surveyed between January and April 2018 to study the diversity and incidence of plant-parasitic nematodes and assess the effects of soil physicochemical properties on the nematodes. Fourteen nematode genera were identified in soil and root samples collected from 66 saffron fields. The most common plant-parasitic nematodes in the Taliouine region were Pratylenchus spp. and Helicotylenchus spp. In the Taznakht region, the most common nematodes were Pratylenchus spp., Tylenchorhynchus spp. and Ditylenchus dipsaci. Nematodes, particularly Pratylenchus spp. and Ditylenchus spp., were abundant and frequent throughout the region. Several nematode genera were significantly associated with soil texture and mineral content, indicating that soil properties play an important role in plant-parasitic nematode communities. This description of plant-parasitic nematode assemblages associated with saffron fields in Morocco and their relationship with soil physicochemical properties provides a starting point from which appropriate nematode management strategies can be implemented.

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