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El-Samawaty, A., Galal, A. (2009). USE OF BENZOTHIADIAZOLE (BTH) FOR INDUCING SYSTEMIC RESISTANCE IN COTTON SEEDLINGS AGAINST SOME SOIL-BORNE PATHOGENIC FUNGI. Journal of Plant Production, 34(4), 3305-3315. doi: 10.21608/jpp.2009.117146
A. M. A. El-Samawaty; A. A. Galal. "USE OF BENZOTHIADIAZOLE (BTH) FOR INDUCING SYSTEMIC RESISTANCE IN COTTON SEEDLINGS AGAINST SOME SOIL-BORNE PATHOGENIC FUNGI". Journal of Plant Production, 34, 4, 2009, 3305-3315. doi: 10.21608/jpp.2009.117146
El-Samawaty, A., Galal, A. (2009). 'USE OF BENZOTHIADIAZOLE (BTH) FOR INDUCING SYSTEMIC RESISTANCE IN COTTON SEEDLINGS AGAINST SOME SOIL-BORNE PATHOGENIC FUNGI', Journal of Plant Production, 34(4), pp. 3305-3315. doi: 10.21608/jpp.2009.117146
El-Samawaty, A., Galal, A. USE OF BENZOTHIADIAZOLE (BTH) FOR INDUCING SYSTEMIC RESISTANCE IN COTTON SEEDLINGS AGAINST SOME SOIL-BORNE PATHOGENIC FUNGI. Journal of Plant Production, 2009; 34(4): 3305-3315. doi: 10.21608/jpp.2009.117146

USE OF BENZOTHIADIAZOLE (BTH) FOR INDUCING SYSTEMIC RESISTANCE IN COTTON SEEDLINGS AGAINST SOME SOIL-BORNE PATHOGENIC FUNGI

Article 8, Volume 34, Issue 4, April 2009, Page 3305-3315  XML PDF (517.31 K)
Document Type: Original Article
DOI: 10.21608/jpp.2009.117146
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Authors
A. M. A. El-Samawaty1; A. A. Galal2
1Cotton Pathol. Lab., Plant Pathol. Res. Inst., Agric. Res. Centre, Giza, Egypt.
2Department of Plant Pathology, Faculty of Agriculture, Minia Univ., Minia, Egypt.
Abstract
The resistance elicitor Benzothiadiazole (BTH) has no significant inhibitory effects on seed germination of cotton cultivars Giza 86 and Giza 90 or on mycelial growth of the tested fungi, i.e. Fusarium solani, F. oxysporum, F. moniliforme, Sclerotium rolfsii, Macrophomina phaseolina, Pythium sp. and Rhizoctonia solani. BTH seed treatment (seed soaking) resulted in resistant cotton plants against infection by all pathogenic fungi tested. Efficiency of BTH to induce resistance in cotton seedlings varied with BTH concentration and fungi tested. Increasing BTH concentration enhanced resistance capacity of cotton cultivars. In addition. When the concentration was increased to 100 ppm, BTH significantly increased plant height from 8.36 to 26.07 % and from 8.93 to 28.82 % for cvs. Giza 86 and Giza 90, respectively. Also, it increased dry weight from 2.87 to 53.26 % and from 9.85 to 31.16 % for cvs. Giza 86 and Giza 90, respectively. The highest efficiency value (60%) was achieved by BTH against F. oxysporum on Giza 86 and F. moniliforme on Giza 90 while the least efficiency was observed by BTH seed treated against Rhizoctonia solani infection. Since 50 ppm of BTH seed treatment caused 18.18 and 21.49% protection in cotton seedlings of cvs. Giza 86 and Giza 90, respectively. Using 100ppm of BTH gave cotton seedlings with 31.81 and 25.62 % protection for Giza 86 and Giza 90, respectively.
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