Journal article
Effects of Fusarium culmorum and water stress on durum wheat in Tunisia
Crop protection, Vol.30(6), pp.718-725
2011
Handle:
https://hdl.handle.net/2376/116026
Abstract
The effects of water stress on Fusarium foot and root rot in durum wheat were investigated in growth chamber, greenhouse and field tests in Tunisia. In the seedling stage, emergence of six durum wheat cultivars in the growth chamber was significantly reduced by inoculation with
Fusarium culmorum and water stress (P<0.0001), with more disease under drier conditions. Additionally, the tiller number per mature plant, the 1000 grain weight and disease severity in mature stage were reduced by inoculation in greenhouse studies. In a field test, inoculation with
F. culmorum significantly reduced the yield (
P<0.001), by more than 17% for Om Rabiaa and 38% for Karim, the two cultivars tested. Yield was also significantly affected by precipitation and irrigation levels. The severity of the disease, estimated by the percentage of white heads, was separately affected by the cultivar (
P<0.001) and inoculation (
P = 0.0004). Percentage of white heads was 1.5 and 2 × higher in inoculated plants than non-inoculated for Om Rabiaa and Karim cultivars, respectively. Disease severity was highest in treatments with the greatest water stress. This is the first detailed study of water stress and
F. culmorum on durum wheat in Tunisia, and indicates that cultivar resistance and irrigation management may be important in the management of Fusarium foot rot.
►
Fusarium culmorum causes crown rot and yield losses on durum wheat in Tunisia. ► In inoculated trials in the growth chamber, greenhouse, and field, more disease occurs when plants are water-stressed. ► The cultivar Om Rabiaa was less affected by disease than Karim.
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Details
- Title
- Effects of Fusarium culmorum and water stress on durum wheat in Tunisia
- Creators
- Samira Chekali - Ecole Supérieure d’Agriculture de Kef, 7119 Le Kef, TunisiaSamia Gargouri - Laboratoire de protection des végétaux, Institut national de la recherche agronomique de Tunisie, rue hédi karray 2049, TunisiaTimothy Paulitz - USDA-ARS, Root Disease and Biological Control Unit, Washington State University, Pullman, WA 99164-6430, USAJulie M Nicol - ICARDA-CIMMYT Wheat Improvement Program, CIMMYT Int., PK 39 Emek, Ankara 06511, TurkeyMohsen Rezgui - Institut National de la Recherche Agronomique de Tunisie, Station du Kef, Boulifa, 7119 Le Kef, TunisiaBouzid Nasraoui - Ecole Supérieure d’Agriculture de Kef, 7119 Le Kef, Tunisia
- Publication Details
- Crop protection, Vol.30(6), pp.718-725
- Academic Unit
- Plant Pathology, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900548178301842
- Language
- English
- Resource Type
- Journal article