Induce Onion Plants Resistance Against Sclerotium cepivorum Berk. Mediated Through Salicylic Acid and Sil-Matrix 29% SL. | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 5, Volume 7, Issue 11, November 2016, Page 707-715 PDF (282.31 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2016.52129 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. M. Amin1; S. B. M. Fawaz1; Karima G. Helmy2 | ||||
| 1Plant Pathol. Res. Inst., ARC, Giza, Egypt. | ||||
| 2Plant Pathol. Dept. Fac. of Agri., Ain Shams University, Cairo, Egypt. | ||||
| Abstract | ||||
| Salicylic acid (SA) and Sil-Matrix 29% SL (SM) (potassium silicate, potassium salt of silicic acid) were used to manage white rot of onion caused by Sclerotium cepivorum Berk. at the rate of 1, 2 and 3mM of SA and 1.5, 3 and 6ml/L of SM as transplants dipping followed by foliar spray by the same concentrations at 6 and 12 weeks from transplanting under greenhouse and open field conditions. The fungicide folicure 25% EC (Tebuconazole 25%) was used as comparison. All treatments reduced white rot infection compared with non-treated plants either in greenhouse or field. SA at the rate of 3mM gave the best reduction where it gave 35.0% and 26.0% infection under greenhouse and field respectively. The best treatment of SM was 6ml/L which gave 45% and 38.2% infection under greenhouse and field respectively. Compared to non-treated plants, all treatments increased onion yield, bulb weight, and plants height. SA at the rate of 3mM gave 144.3% and 160.4% increase in yield and bulb weight respectively, while SM at the rate of 6ml/L gave 24% as best increase in plants height. Soluble protein, free amino acids, reducing sugars, phenolic compounds, peroxidase and polyphenol oxidase activity increased after dipping while it varied after spraying. | ||||
| Keywords | ||||
| Onion white rot; Salicylic acid; Sclerotium cepivorum; silicon; Sil-Matrix | ||||
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