Document Type : Pest Management

Authors

• Shahriyar Kia ¹
• Ebrahim Hezarjaribi ²

¹ Assistant Professor, Crop and Horticulture Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran.

² Crop and Horticulture Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran

Abstract

Charcoal rot caused by the fungus Macrophomina phaseolina is one of the most common soybean diseases in Iran. In this study, resistance of 35 soybean genotypes from maturity groups II to V were evaluated against Charcoal rot in the field and greenhouse conditions. In the field cinditions, the percent of infected plants and the percent height of internal stem discoloration, and in the greenhouse conditions, length of stem necrosis were measured. As the results, genotypes Katul, Saman, Gorgan3, RVB × Katul and Katul × Krasnodar778 have the lowest percent of infected plant, percent height of internal stem discoloration and length of stem necrosis and identified as moderately resistant genotypes. Genotypes Williams, Sepideh, Sahar, L 17, and Karbin × Valenta have the highest percent of infected plant, percent height of internal stem discoloration and length of stem necrosis evaluated as susceptible genotypes. The moderately resistant enotypes identified as can be used as sources for developing soybean cultivars with resistance to charcoal rot.

Keywords

• Soybean
• Resistance
• Damping off
• macrophomina

Main Subjects

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