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EL-SAMAWATY, A., OMAR, M., GALAL, A. (2008). SYSTEMIC ACQUIRED RESISTANCE IN COTTON GENOTYPES AGAINST VASCULAR WILT DISEASE CAUSED BY FUSARIUM OXYSPORUM F.SP. VASINFECTUM. Egyptian Journal of Agricultural Research, 86(4), 1253-1264. doi: 10.21608/ejar.2008.209402
ABDELRHEEM M. EL-SAMAWATY; MOAWAD R. OMAR; ANWAR A. GALAL. "SYSTEMIC ACQUIRED RESISTANCE IN COTTON GENOTYPES AGAINST VASCULAR WILT DISEASE CAUSED BY FUSARIUM OXYSPORUM F.SP. VASINFECTUM". Egyptian Journal of Agricultural Research, 86, 4, 2008, 1253-1264. doi: 10.21608/ejar.2008.209402
EL-SAMAWATY, A., OMAR, M., GALAL, A. (2008). 'SYSTEMIC ACQUIRED RESISTANCE IN COTTON GENOTYPES AGAINST VASCULAR WILT DISEASE CAUSED BY FUSARIUM OXYSPORUM F.SP. VASINFECTUM', Egyptian Journal of Agricultural Research, 86(4), pp. 1253-1264. doi: 10.21608/ejar.2008.209402
EL-SAMAWATY, A., OMAR, M., GALAL, A. SYSTEMIC ACQUIRED RESISTANCE IN COTTON GENOTYPES AGAINST VASCULAR WILT DISEASE CAUSED BY FUSARIUM OXYSPORUM F.SP. VASINFECTUM. Egyptian Journal of Agricultural Research, 2008; 86(4): 1253-1264. doi: 10.21608/ejar.2008.209402

SYSTEMIC ACQUIRED RESISTANCE IN COTTON GENOTYPES AGAINST VASCULAR WILT DISEASE CAUSED BY FUSARIUM OXYSPORUM F.SP. VASINFECTUM

Article 7, Volume 86, Issue 4, December 2008, Page 1253-1264  XML PDF (3.39 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2008.209402
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Authors
ABDELRHEEM M. EL-SAMAWATY1; MOAWAD R. OMAR1; ANWAR A. GALAL2
1Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt
2Department of Plant Pathology, Faculty of Agriculture, Minia University, Minia. Egypt
Abstract
Systemic acquired resistance in cotton plants against infection with Fusarium oxysporum f.sp. vasinfectum (Atk) snyd. And Hank), (FOV) was expressed when cotton seeds of genotype Giza 80 X Australian genotype 19199 were soaked in solutions of various resistance elicitors (REs). All REs, Ascorbic add (AA), benzoic acid (BA), benzothiadiazole (BTH), citric acid (CA), cinnamic acid (CiA), hydroquinone (HQ), salicylic add (SA), sodium citrate (NaC), sodium metbisulfate (NaMS) and thiourea (THU) induced resistance that increased with increasing REs concentrations. BTH was the most efficient elicitor in inducing resistance in cotton plants. Efficiency of BTH was highly affected by the concentration and by cotton genotype. The most susceptible cotton genotype Giza 80 X Australian genotype 19199 showed the highest response to the application of BTH at all concentrations. A significant positive correlation was observed between susceptibility of cotton genotypes to FOV infection and efficiency of BTH in inducing resistance. In other words, susceptibility of the genotype positively correlated with the magnitude of response to the elicitor. Thus, infection accounted for 73 and 64 % of the total variation in BTH efficiency when it was applied at 50 and 100 ppm, respectively. 
Keywords
Gossypium trarbadense; Ascorbic acid; Benzothiadiazole; Citric acid; Cinnamic acid; Salicylic add
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