Effect of Substrates on the Mycorrhization and Growth of <i>Saba senegalensis</i> under Semi-Controlled Conditions

Abstract

Saba senegalensis is a wild edible fruit plant species with a high economic potential which can be used to fight food insecurity in rural areas and to reduce poverty. Domestication programs are being carried out to boost production. However, no studies have been done to determine the optimal soil properties for growing S. senegalensis. This study was carried out to determine the effects of the physical and chemical properties of different substrates on the mycorrhization and growth of S. senegalensis under semi-controlled conditions. S. senegalensis seeds were grown for 4 months in the nursery using five substrates: S1 (1/2 sand + 1/2 potting soil), S2 (1/3 sand + 2/3 potting soil), S3 (2/3 sand + 1/3 potting soil), S4 (potting soil) and S5 (sand). The intensity of mycorrhization was highest for plants grown on substrates with a lowest clay, silt, and nutrient content S3 (29.5%) and S5 (23.5%) respectively. Substrates with much higher clay and silt content stimulated better the growth of S. senegalensis than substrates with lower silt clay and nutrient content. In the context of domestication, the quality of the substrates could be used to stimulate the mycorrhization and the growth of S. senegalensis and thus quickly produce vigorous plants.

Crescimento inicial de mudas de espécies arbóreas nativas produzidas em substratos inoculados com fungos micorrízicos arbusculares

“…No reports were found in the literature investigating in depth the effect of the cultivation substrate after mycorrhizal inoculation on the native FMA community. However, the impact of these technologies on the growth and efficiency of symbiosis in tree species are already reported (Diouf et al 2019;. The high presence of members of the Acaulosporaceae, Glomeraceae and Paraglomeraceae families in the two types of substrates grown independently of the plant host, as observed in the Venn diagram, confirms that these fungal groups have a wide distribution and low specificity in forest species (Thioye et al 2019), consequently they can adapt to different environmental conditions presented by different substrates.…”