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Induced systemic resistance in pepper plant aginst pepper mosaic virus by using biological control agents | ||
| Kufa Journal for Agricultural Science | ||
| Article 1, Volume 9, Issue 4, 2017, Pages 108-134 | ||
| Authors | ||
| Fdhel AL-Fadhel; Ammar Alhares | ||
| Abstract | ||
| This study was conducted in order to determine the possibility of stimulating systemic resistance in pepper plants against cucumber mosaic virus (CMV) using two types of bacteria Pseudomonas fluorescens and Azotobacter chroococcum, and salicylic acid with two types of fungi Trichoderma Koningii and/or T. hamatum to evaluate the effectiveness of each treatment individually or in combination in suppressing CMV. Results of Irrigation treatments using bacterial bio control agents reduced infection and increased the chlorophyll content where the chlorophyll content was the highest (226.04 mg/100g fresh weight (FW)) when plants treated with P. fluorescens mixed with A. chroococcum followed by (174.51 and 141.56) mg/100gFW from plants irrigated with A. chroococcum and P. fluorescens, respectively with using the bacterial mix also improved all plant growth indicators and resulted in 44.93 cm, 34.40 cm, 16.73 g, 20.33 g, 6.59 g and 16.20 g for shoot and root length, shoot and root fresh weigh, shoot dry weight and root dry weight, respectively. There was no significant difference between irrigation and dipping with bacterial mix. | ||
| Keywords | ||
| CMV; Azotobacter chroococcum; pseudomonas fluorescens; Trichoderma hammtum; Trichoderma konngii | ||
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