Chemical property of soil and mycorrhizal status in Allanblackia floribunda Oliver (Clusiaceae)

The objective of this study was to describe the type of mycorrhizal fungus that is associated with A. floribunda and evaluate the effect of soil chemical properties on its rhizosphere, its mycorrhizal dependency in its natural range in four populations of the species (Mouanko, Yalpenda, Nkenlikok and Mbalmayo), two land use systems (disturbed and undisturbed), two age classes (circumference less than 50cm and up to 50cm). Results obtained so far demonstrated that A. floribunda is colonized by arbuscular mycorrhizas. Root colonization was significantly (P < 0.01) different in the targeted populations with the highest observed in Yalpenda (53.63 ± 1.33%). Land disturbance significantly (P < 0.01) affected root colonization. Unperturbed soils displayed the highest root colonization (35.29 ± 0.70%). Age classes had significant (P < 0.001) influence on root colonization and trees with circumferences up to 50 cm had the highest percentage (35.45 ± 0.72%). There was no significant correlation between root colonization and phosphorus (R2 = 0.437, p = 0.563), in contrary to root colonization and copper (R2 = -0.934, p = 0.046). These results constitute a prerequisite for the inoculation phase and molecular analysis of roots already begun.

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DOI:

https://doi.org/10.22259/ijraf.0401004

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