RESPONSE OF THREE SAFFLOWER GENOTYPES TO THE CAUSAL AGENT OF CHARCOAL ROT

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PAHLEVANI M.H.; RAZAVI S.E.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2007 | Volume:14 | Issue:2 Page(s): 157-164

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Title

RESPONSE OF THREE SAFFLOWER GENOTYPES TO THE CAUSAL AGENT OF CHARCOAL ROT

Author(s)

PAHLEVANI M.H. | RAZAVI S.E. | Issue Writer Certificate

Keywords

CHARCOAL ROTQ3

MACROPHOMINA PHASEOLINAQ3

SAFFLOWERQ3

RESISTANT GENOTYPEQ3

Abstract

This study was carried out to isolate the causal agent of CHARCOAL ROT disease and determination of reaction mode in some SAFFLOWER (Carthamus tinctorius L.) genotypes. Therefore, SAFFLOWER plants that had symptoms of CHARCOAL ROT disease were sampled, in 2003. The disease symptoms were included, crown discoloration, root rot, lower stem rot and darkening of inner crown sections. The isolation of pathogen was performed by culture of some sections of root, crown and lower stem on acidified P.D.A. The fungus colonies were gray white that with producing sclerotia were changed to black. The sclerotia were black in color, smooth and hard with size of 58-63×158-163m in diameter. The single or clustered pycnidia were formed on sterilized stems and toothpicks, which were located on P.D.A. Pycnidia, had dark brown colorization, solitary or massive, opening by apical ostiole, and pycnidiospores were hyaline and ellipsoid with 9´21m in size that these characteristics were carefully similar to that described for MACROPHOMINA PHASEOLINA (Tassi) Goid. Pathogenecity of the fungus was studied by inoculation of three SAFFLOWER genotypes at the 6 to 8 leaf stage using of stem-puncture method. At flowering stage, inoculated plants were evaluated and scored for amount and severity of CHARCOAL ROT disease symptoms. Results indicated that the SAFFLOWER genotypes, IUTC129, Safire and AC-Stirling had resistant, semi-susceptible and susceptible reaction to CHARCOAL ROT disease, respectively.

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APA: Copy

PAHLEVANI, M.H., & RAZAVI, S.E.. (2007). RESPONSE OF THREE SAFFLOWER GENOTYPES TO THE CAUSAL AGENT OF CHARCOAL ROT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 14(2), 157-164. SID. https://sid.ir/paper/9285/en

Vancouver: Copy

PAHLEVANI M.H., RAZAVI S.E.. RESPONSE OF THREE SAFFLOWER GENOTYPES TO THE CAUSAL AGENT OF CHARCOAL ROT. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2007;14(2):157-164. Available from: https://sid.ir/paper/9285/en

IEEE: Copy

M.H. PAHLEVANI, and S.E. RAZAVI, “RESPONSE OF THREE SAFFLOWER GENOTYPES TO THE CAUSAL AGENT OF CHARCOAL ROT,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 14, no. 2, pp. 157–164, 2007, [Online]. Available: https://sid.ir/paper/9285/en

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