نتایج جستجو برای: root and crown rot
تعداد نتایج: 16853159 فیلتر نتایج به سال:
in summer 2014, plants of pomegranate (punica granatum l.) with crown rot symptoms was observed in the firozabad and siakh-darengon area in fars province. the symptoms were very similar to phytophthora crown rot. surface-disinfested tissues from the lower margins of the necrotic area were plated on acidified potato dextrose agar (pda) and phytophthora selective antibiotic medium (cma-parp). to ...
a comparative study was conducted to find a reliable and simple method for evaluation of resistance of sugar beet genotypes to rhizoctonia root and crown rot. for this, 12 sugar beet genotypes were used in greenhouse, field and in vitro experiments. the field experiment was performed in micro plots (1×1×2 meter) using randomized complete block design with 4 replications. prior to planting, the ...
Distribution of Phytophthora species associated with stone fruits decline in Fars was investigated. Of 36 isolates of Phytophthora recovered, 23 were identified as P. cactorum (mostly from infected crown) from almond, apricot, and peach and 13 isolates of P. nicorianae from crown and basal stem of almond and apricot from different environmental conditions. The reactions of crown and root of 6- ...
Root rot is an important and widespread disease that often causes significant reduction in the yield and quality of harvested peas throughout the production areas in New York. Pea root rot can be caused by one of several soilborne pathogens or various combinations of root pathogens and also non-pathogens. In recent years, Fusarium solani f. sp. pisi (causal pathogen of Fusarium root rot) has be...
چکیده پوسیدگی عمومی طوقه و ریشه گندم در سال های اخیر به عنوان یک بیماری مهم در استان خراسان شمالی جلب توجه نموده است. به منظور شناسایی عامل یا عوامل اصلی قارچی بیماری در سال های زراعی 86- 1385و87 - 1386 نمونه برداری هائی از مزارع گندم آبی مشکوک به بیماری درمناطق شیروان، فاروج، بجنورد، اسفراین و مانه و سملقان در سه مرحله گیاهچه، پنجه زنی تا ساقه رفتن و ظهور سنبله تا سفت شدن دانه به عمل آمد. از ب...
First Report of Phytopythium helicoides Causing Crown and Root Rot of Rhododendron pulchrum in China
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