Summary
The rhizosphere flora of banana varieties differs quantitiatively from variety to variety. The comparison of rhizospheres is difficult, because the form of expression of the results may take many forms, none of them completely satisfactory. In the method adopted here, the two genetic pairs of banana, Gros Michel — Congo and Silk Fig — Guindy differ widely in the rhizosphere flora which they support, the former pair supporting the greater number of micro-organisms. Within each pair, the higher number is found on the variety susceptible to Panama disease. The nutrient requirements of rhizosphere floras are related to the sap of the banana variety from which they have been derived.
A bacterium strongly antagonistic toFusarium oxysporum-cubense was isolated in high numbers from the rhizosphere of the Panama disease immune Congo banana, although this was virtually absent from the susceptible Gros Michel.
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Harper, J.L. Studies in the resistance of certain varieties of banana to panama disease. Plant Soil 2, 383–394 (1950). https://doi.org/10.1007/BF01343358
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DOI: https://doi.org/10.1007/BF01343358