An investigation on pathogenicity of four isolates of Fusarium oxysporum from South America, Africa and Malaysia to clonal oil palm.
1989
Flood J. | Cooper R.M. | Lees P.E.
The pathogenicity of four isolates of Fusarium oxysporum from Brazil, Zaire and Malysia, to clonal oil palm (Elaeis guineensis) was examined. The isolates from Brazil and Zaire were virulent pathogens which extensively colonized inoculated plantlets, producing severe stunting and chlorosis and significantly reducing plant growth. In contrast, two isolates from Malaysia were avirulent or only weakly virulent, nevertheless, both systemically colonized plantlets and one was present in amounts comparable to the virulent isolates. The implications of these findings with regard to the planting of clonal oil palm in each of these three main growing areas is discussed.
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