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The influence of temperature, inoculum level and race of Fusarium oxysporum f.sp. cubense on the disease reaction of banana cv. Cavendish

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Brake, V.M., Pegg, K. G., Irwin, J.A.G. and Chaseling, J. (1995) The influence of temperature, inoculum level and race of Fusarium oxysporum f.sp. cubense on the disease reaction of banana cv. Cavendish. Australian Journal of Agricultural Research, 46 (3). pp. 673-685. ISSN 1836-0947

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Article Link: https://doi.org/10.1071/AR9950673

Abstract

Cavendish banana plants were grown in soil infested with different levels of microconidia of races 1 and 4 of Fusarium oxyspomm Schlect. f. sp. cubense (E.F. Smith) Snyd. & Hans. The 4-week-old plants were incubated at 20¦ and 28¦C in temperature controlled cabinets subject to natural light fluctuations. Race 1, which does not normally infect Cavendish in the field, infected the plants at both temperatures, as did race 4. Results indicated that temperature was primarily affecting plant growth rather than influencing the aggressiveness of the pathogen. Inoculum levels were also found to influence disease severity with a minimum of 4.5 x l04 microconidia/g dry weight of soil required before macroscopic symptoms were observed. The suitability of month-old tissue culture derived plants for screening for resistance and the evolution of the Cavendish attacking race 4 strains are discussed in the light of these findings.

Item Type:Article
Keywords:Fusarium; wilt; bananas; temperature; inoculum; race 4
Subjects:Plant pests and diseases > Individual or types of plants or trees > Bananas
Plant pests and diseases > Plant pathology
Live Archive:15 Apr 2024 22:23
Last Modified:15 Apr 2024 22:23

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