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Journal of Agricultural Science and Technology، جلد ۲، شماره Number ۱، صفحات ۳۳-۳۹
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عنوان انگلیسی Reaction of Wheat Varieties to Infection by Pythium arrhenomanes or its Toxic Metabolite (s)
چکیده انگلیسی مقاله Eight wheat varieties some of which were earlier reported to be resistant to Pythium arrhennmanes, were inoculated with P. arrhenomanes. Inoculation was performed by placing 2-day-old seedlings on the edge of a P. arrhenomanes culture on corn meal agar for 3 h at 25°C. Infected seedlings were then transferred to test tubes (9 mm dia.) containing glass beads and 1 ml of sterile water, and incubated for 4 days at 25°O Non-inoculated seedlings were exposed to the toxic metabolite(s) from P. arrhenomanes by placing them in test tubes containing 1 ml of a 25-day-old culture filtrate of P. arrhenomanes. Non-inoculated seedlings grown in test tubes containing sterile water served as controls. Measurements were taken on root and shoot length, as well as fresh and dry root and shoot weights. There was an indication that it may be possible to use the toxic metabolite(s) in screening for resistance to P. arrhenomanes. Although all of the varieties appeared to be susceptible, there were some differences among them in their reaction to fungal infection or exposure to the toxic metabolite(s).
کلیدواژه‌های انگلیسی مقاله Pythium arrhenomanes,Resistance,Toxic metaholite(s),Wheat
نویسندگان مقاله h مژدهی |
islamic azad university, tehran, islamic republic of iran.
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

l l singleton | l l
departement of plant pathology, oklahoma state university, stillwater, ok. 74078, u.s.a.

نشانی اینترنتی http://jast.modares.ac.ir/article_4581_6e40d838aeb3e88c08df546a0cb8de7f.pdf
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