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Volume 5, Issue 9

Impact of inoculum density of f. sp. on symptomatic appearances and yield of ginger ( Roscoe) Open Access

Abstract

Ginger ( Roscoe) is an important horticultural crop valued for its medicinal and culinary properties. Fusarium yellows, caused by the ascomycete fungus f. sp. (), is a devastating soil-borne disease of ginger. It has curtailed ginger production in Australia and around the world, leading to significant economic losses. An integrated approach is required to manage soil-borne diseases such as those caused by . However, little is known about the influence of inoculum on disease severity. This study aimed to establish a minimum threshold level of spores per gram of soil required for plant infection and to develop and evaluate a pot inoculation method for screening large numbers of plants in a controlled environment. To achieve this, the dominant Australian ginger cultivar Canton was inoculated with 10, 10, 10, 10 and 10 microconidia g soil. The inoculum density was positively associated with leaf and stem yellows, and rhizome discolouration, and negatively associated with root length and rhizome weight. The lowest threshold required for plant infection was 10 microconidia g soil, which may provide an important basis for outbreaks of in the field. This finding adds significantly to our knowledge of the impact of soil health on ginger production, thereby contributing to the integrated management of . When used at a high dose, this method can facilitate reliable and accurate screening of -susceptible ginger genotypes in a controlled environment.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): crop yield , Fusarium oxysporum f. sp. zingiberi , Fusarium yellows , ginger , inoculum dose and Zingiber officinale Roscoe
Funding
This study was supported by the:
  • School of Agriculture and Food Sciences, University of Queensland (Award AGRC7618)
    • Principle Award Recipient: ElizabethA. B. Aitken
© 2023 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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2023-09-11
2024-05-08
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Impact of inoculum density of Fusarium oxysporum f. sp. zingiberi on symptomatic appearances and yield of ginger (Zingiber officinale Roscoe)
Access Microbiology 5, 000605.v3 (2023); https://doi.org/10.1099/acmi.0.000605.v3
/content/journal/acmi/10.1099/acmi.0.000605.v3
/content/journal/acmi/10.1099/acmi.0.000605.v3
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