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Investigation of root and crown tissue death of Beta vulagris, Triticum aestivum L. and Zea mays by different Pythium spp. in laboratory conditions
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Tayyebeh Kiyani *    , Vaheh Minassian , Seyed Ali Mousavi Jorf , Saeedeh Dehghanpour Farashah |
| Master of Plant Pathology, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran. & - , kiyani1386@yahoo.com |
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Abstract: (534 Views) |
Pathogenicity status of 20 isolates of Pythium pathogen, which included 8 species of P. aphanidermatum, Pythium Group G, P. ultiumum, P. deliense, Pythium Group F, P. inflatum, P. ostracodes and P. diclinum on the tissue-mortality of the collar and root of wheat, corn and sugar beet plants were studied. For this purpose, different pathogenicity tests were conducted in which different culture media were used, such as CMA, WA, millet mixed with the pseudo-fungui and vermiculite mixed with the pseudofungus. In wheat, P. aphanidermatum and P. ostracodes species caused more dead tissue of root and crown than the other species, and the severity of dead tissue and seedling death caused by P. aphanidermatum was more than the other isolates. In corn, P. aphanidermatum caused more tissue death of the collar than the other species, and P. deliense ranked next to it. And these two species caused corn root dead tissue almost to the same extent and the percentage of dead tissue caused by them was more than the other species. The severity of root and crown tissue death by P. aphanidermatum in sugar beet was more than the other isolates and the extent of dead tissue of the root was much more than that of the crown.
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Article number: 1 |
| Keywords: Pythium spp., crown and root necrosis, seedling death, pathogenicity. |
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Type of Study: Research |
Subject:
Divers
Received: 2024/07/2 | Accepted: 2024/11/13 | Published: 2024/12/18
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