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Biological control of barley covered smut by bacterial antagonists | ||
| آفات و بیماری های گیاهی | ||
| Volume 74, No. 2 - Serial Number 82, March 2007, Pages 81-91 PDF (178.81 K) | ||
| Authors | ||
| H. R. Etebarian* ; M. Mohammadifar; H. Alizadeh; A. ZAREI SARABI | ||
| Abstract | ||
| Six strains of Bacillus which were isolated from wheat field of Markazi, Golestan and Mazandaran provinces and also 11 strains of Pseudomonas fluorescens isolated from wheat fields of Karaj and Markazi province were evaluated as potential biological agents for control of barley covered smut caused by Ustilago hordei in field. The randomized complete design with three replications was used for experiments. Results indicated that Bacillus lichniformis (B1) and B. cereus (B2) completely controlled barley covered smut. The percentage of infection in treatments with Bacillus sp (B2), B. cereus (B4), B. subtilis (53) and B. subtilis (71) ranged from 0.119 to 0.617 and were significantly less than infected control (p < 0.01). The best results were achived with Pseudomonas fluorescens bioV (C15), P. fluorescens bioV (E2), P. fluoresecns (D11) and P. fluoresecns bioI (32). The percentage of infection in these treatments were 0.207, 0.177, 0.133 and 0.18 respectively. Other strains of Pseudomonas were capable of reducing the incidence of covered smut and the percentage of infection significantly less than infected control. | ||
| Keywords | ||
| Barley covered smut; Bacillus lichniformis; Bacillus cereus; Bacillus subtilis; Pseudomonas fluorescens; Biological control; Ustilago hordei | ||
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| References | ||
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