EFFECT OF SALT AND WATER STRESS ON ROOT INFECTION BY MACROPHOMINA PHASEOLINA AND ION COMPOSITION IN SHOOT IN SORGHUM

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GOUDARZI A.; BANIHASHEMI Z.; MAFTOUN M.

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Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY Year:2011 | Volume:47 | Issue:3 (187) Page(s): 69-83

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Title

EFFECT OF SALT AND WATER STRESS ON ROOT INFECTION BY MACROPHOMINA PHASEOLINA AND ION COMPOSITION IN SHOOT IN SORGHUM

Author(s)

GOUDARZI A. | BANIHASHEMI Z. | MAFTOUN M. | Issue Writer Certificate

Keywords

MATRIC POTENTIALQ1

OSMOTIC POTENTIALQ2

CHARCOAL ROTQ2

SORGHUM BICOLORQ2

DROUGHTQ2

Abstract

The interaction of salt and water stress to infect the roots by Macrophomina phaseolina, and affect the ion composition and growth of sorghum (Sorghum bicolor) was studied in a greenhouse experiment (19-35oC). Treatments consisted of 4 levels of salinity (0, 1400, 2100 and 2800 mg of NaCl kg-1 soil) and three water stress levels (3, 7 and 10 irrigation intervals). Infested soil containing 100 viable microsclerotia g-1 of a melon isolate of M. phaseolina and non-infested soil were used for all treatments. The experiment was arranged in a completely randomized design with four replications. Six-week-old sorghum seedlings after their transferring to infested and noninfested soil were exposed to salt stress, after which, water stress was started. Shoot dry weights were reduced by increasing salinity levels. This reduction was more pronounced in infested soil than in non-infested. Increasing irrigation intervals reduced salt injuries. Shoot and root colonization by M. phaseolina significantly increased by increasing salinity levels up to 1400 mg of NaCl kg-1 soil. Moreover, salinity and M. phaseolina interaction increased the concentrations of Na+ and Cl- compared to salt stress per se, but negatively correlated with increasing irrigation intervals. Concentration of K+ was in contrast with Na+ and Cl-. Also, disease symptoms appeared only in the highest irrigation intervals (7 and 10 days). Consequently, more infected crown and root were observed by increasing irrigation intervals and NaCl levels up to 1400 mg kg-1 soil.

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APA: Copy

GOUDARZI, A., BANIHASHEMI, Z., & MAFTOUN, M.. (2011). EFFECT OF SALT AND WATER STRESS ON ROOT INFECTION BY MACROPHOMINA PHASEOLINA AND ION COMPOSITION IN SHOOT IN SORGHUM. IRANIAN JOURNAL OF PLANT PATHOLOGY, 47(3 (187)), 69-83. SID. https://sid.ir/paper/48173/en

Vancouver: Copy

GOUDARZI A., BANIHASHEMI Z., MAFTOUN M.. EFFECT OF SALT AND WATER STRESS ON ROOT INFECTION BY MACROPHOMINA PHASEOLINA AND ION COMPOSITION IN SHOOT IN SORGHUM. IRANIAN JOURNAL OF PLANT PATHOLOGY[Internet]. 2011;47(3 (187)):69-83. Available from: https://sid.ir/paper/48173/en

IEEE: Copy

A. GOUDARZI, Z. BANIHASHEMI, and M. MAFTOUN, “EFFECT OF SALT AND WATER STRESS ON ROOT INFECTION BY MACROPHOMINA PHASEOLINA AND ION COMPOSITION IN SHOOT IN SORGHUM,” IRANIAN JOURNAL OF PLANT PATHOLOGY, vol. 47, no. 3 (187), pp. 69–83, 2011, [Online]. Available: https://sid.ir/paper/48173/en

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