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Journal of Agricultural Science and Technology، جلد ۹، شماره ۳، صفحات ۲۴۳-۲۴۹
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عنوان انگلیسی Physiological Races of Phytophthora sojae in Iran and Race –Specific Reactions of Some Soybean Cultivars
چکیده انگلیسی مقاله Phytophthora root and crown rot of soybean is known as a destructive disease of soy-bean both through out the world and in Iran. Physiologic races of Phytophthora soja were determined in this research and also a fast, accurate and simple method for inoculation of soybean to test race specific resistance. During the years　2001-4, infected soybean plants at different growth stages were collected from different areas and 22 isolates of P. sojae were recovered using PARPH medium. Physiological races of the pathogen were deter-mined on differential seedling lines by the hypocotyl inoculation method. Ten seedlings from each differential line grown in a 10-cm pot were inoculated under greenhouse condi-tions (25ºC) by a 10-14 days old fungus (LBA medium). The reaction of the seedlings was classified after 5-6 days as resistant (70% or more of seedlings alive) or susceptible (70% or more of the seedlings killed). Most isolates were identified as race one, six as race three, one as race four and one as a putative race 13. Race-specific resistance of the 60 cultivars towards race three was determined. Some of them such as ‘TMS’, ‘Maverick and ‘Williams 82’ were considered as resistant cultivars. All experiments were repeated three times.
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نویسندگان مقاله | H. Sadeghi Garmaroodi
Seed and Plant Improvement Institute, Oilseed Crops Department, Karaj, Islamic Republic of Iran.


| M. Mirabolfathi
Plant Pest and Disease Research Institute, Plant Pathology Department,Tehran, Islamic Republic of Iran.


| H. Babai
Seed and Plant Improvement Institute, Oilseed Crops Department, Karaj, Islamic Republic of Iran.


| H. Zeinali
College of Agriculture, Tehran University, Karaj, Islamic Republic of Iran.
نشانی اینترنتی http://journals.modares.ac.ir/browse.php?a_code=A-23-1000-7637&slc_lang=en&sid=23
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