Scholarlink

<p>In Algeria, Fusarium head blight (FHB) is an emerging disease principally caused by <i>Fusarium culmorum</i> (Wm.G. Sm.) Sacc. In this study, we screen and characterize the aggressiveness of a collection of 14 <i>Fusarium culmorum</i> national isolates (I) on the most cultivated wheat variety in Algeria HD1220. The characterization was based on the latent period (LP) in days, the disease severity (DS) converted to the Area Under the Disease Progress Curve (AUDPC), and the thousand kernel weight loss (TKWL). During two-year study, all isolates reproduced the typical disease symptoms with highly significant isolate effect (<i>p</i> &lt; 0.001) for all the studied parameters. The isolate x year interaction was not significant for LP (<i>p</i> &gt; 0.05), whereas for AUDPC and TKWL it was highly significant (<i>p</i> &lt; 0.001). The I9 was the least aggressive isolate with a LP of 11 days, an AUDPC of 36.76 and a TKWL of 9.08%; the most aggressive isolates were I3 with a LP of 6 days, an AUDPC of 594.60 and a TKWL of 41.54%, and I5 with 6.25 days, 667.76, and 40.33% for the same parameters; these isolates were selected for FHB resistance tests. All isolates produced lower LPs, higher AUDPCs and greater TKWL in wet conditions than in dry conditions, although ranking of aggressiveness parameters remained generally stable irrespective of the year’s climate. To our knowledge, it is the first report in Algeria, demonstrating the stability of aggressiveness among isolates and highlighting the influence of climatic conditions on disease severity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Screening and characterization of aggressiveness of an indigenous Fusarium culmorum isolates collection associated to Fusarium head blight (FHB) of wheat in Algeria

  • 期刊论文

  • 发表日期：

    2026年3月27日

查看全文
  • Assia Khalfi-Douici,
  • Sihem Touati-Hattab,
  • Abdenour Zibani,
  • Houda Boureghda

摘要

In Algeria, Fusarium head blight (FHB) is an emerging disease principally caused by Fusarium culmorum (Wm.G. Sm.) Sacc. In this study, we screen and characterize the aggressiveness of a collection of 14 Fusarium culmorum national isolates (I) on the most cultivated wheat variety in Algeria HD1220. The characterization was based on the latent period (LP) in days, the disease severity (DS) converted to the Area Under the Disease Progress Curve (AUDPC), and the thousand kernel weight loss (TKWL). During two-year study, all isolates reproduced the typical disease symptoms with highly significant isolate effect (p < 0.001) for all the studied parameters. The isolate x year interaction was not significant for LP (p > 0.05), whereas for AUDPC and TKWL it was highly significant (p < 0.001). The I9 was the least aggressive isolate with a LP of 11 days, an AUDPC of 36.76 and a TKWL of 9.08%; the most aggressive isolates were I3 with a LP of 6 days, an AUDPC of 594.60 and a TKWL of 41.54%, and I5 with 6.25 days, 667.76, and 40.33% for the same parameters; these isolates were selected for FHB resistance tests. All isolates produced lower LPs, higher AUDPCs and greater TKWL in wet conditions than in dry conditions, although ranking of aggressiveness parameters remained generally stable irrespective of the year’s climate. To our knowledge, it is the first report in Algeria, demonstrating the stability of aggressiveness among isolates and highlighting the influence of climatic conditions on disease severity.