Abstract
Soils from four different cassava cropping fields (Aniansué 1, Aniansué 2, Dramanekro 1, Dramanekro 2) were analyzed to evaluate abundance and diversity of Arbuscular Mycorrhizal Fungi associated with cassava rhizosphere in Abengourou, East Côte d’Ivoire. It was shown that the soils in the cassava cropping fields were all acidic with low levels of available phosphorus (P). A total of 29 species belonging to six different genera (Acaulospora, Ambispora, Claroideoglomus, Gigaspora, Glomus and Scutellospora) were found at Aniansué 1, 28 species belonging to six different genera (Glomus, Claroideoglomus, Acaulospora, Ambispora, Gigaspora, Pacispora) were found at Aniansué 2, 30 species belonging to six different genera (Glomus, Acaulospora, Ambispora, Gigaspora, Pacispora, Scutellospora) were found at Dramanekro 1 and 27 species belonging to five different genera (Glomus, Acaulospora, Ambispora, Gigaspora, Scutellospora) were found at Dramanekro 2. The genus Glomus was dominant at each cassava cropping field. Spore densities were high, positively correlated with both soil pH and Mg2+, but negatively with available P. Trap culture revealed good infection potential for all soils. The frequencies of mycorrhizal roots were more than 93% for all field soils. Key words: Arbuscular mycorrhizal fungi, abundance, diversity, cassava rhizosphere, Abengourou, East Côte d’Ivoire.
Highlights
Cassava (Manihot esculenta Crantz) is an Euphorbiaceae originally from South America (Charrier and Lefevre, 1988)
Our study indicates that in Abengourou, cassava culture was associated with Arbuscular mycorrhizal fungal (AMF)
AMF Spores densities were high at all sites and it had been noted a large variability of species
Summary
Cassava (Manihot esculenta Crantz) is an Euphorbiaceae originally from South America (Charrier and Lefevre, 1988). This plant has become one of the dominant starchy stables in humid lowlands of the tropics (Oyetunji and Osonubi, 2007). It is an important food’s source for 800 billion people worldwide (Hahn and Keyser, 1985) and is Africa's second most important crop in terms of consumed calories (Yaninek and Schulthess, 1993). Cassava has better growth conditions in either loamy or sandy soils moderately fertile. This plant can grow in marginal areas (Yaninek and Schulthess, 1993).
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