نتایج جستجو برای: two isolates in mating population c (f. fujikuroi) and twenty

تعداد نتایج: 21991718  

Journal: :دانش گیاه پزشکی ایران 0
فریبرز لطفی میری دانشجوی سابق کارشناسی ارشد دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران محمد جوان نیکخواه دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران حمیدرضا زمانی زاده دانشیار، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران فریدون پاداشت دهکایی استادیار مؤسسه تحقیقات برنج کشور، رشت

to study the population structure of gibberella fujikuroi species complex, the causal agent of rice foot rot, samples were taken from different rice growing regions of guilan province in 2004. among fourty-one isolates recovered from different cultivars; three isolates did not produce microconidial chain. in order to study the sexual fertility and determine the mating type as well as mating pop...

Journal: :بیماریهای گیاهی 0
سارا عفتی لاکه مسئول مکاتبه فریدون پاداشت دهکایی نویسنده حسین صارمی نویسنده

gibberella fujikuroi the cause of rice bakanae disease and foot rot is one of the important seed-borne diseases in guilan province. three fusarium species including fusarium proliferatum, fusarium verticillioides and fusarium fujikuroi have been reported as the casual agents of rice bakanae disease from all over the world. these three species belonged to three mating population a, c and d that ...

Journal: :Tropical life sciences research 2011
Latiffah Zakaria Heng Mei Hsuan Baharuddin Salleh

Mating studies were conducted on 78 isolates of Fusarium species section Liseola from rice, sugarcane and maize. From the crosses with tester strains of Gibberella fujikuroi species complex, 64.1% (50 out of 78 isolates) were cross-fertile with tester strains of mating populations A to E. The results of the mating studies showed that of the 50 isolates, 19 belonged to mating population A (Gibbe...

Journal: Mycologia Iranica 2016

In order to determine the fumonisin producingisolates of the Fusarium fujikuroi species complex (FFSC), associated with infected spikes, and ear rot of grass plants, we examined 78 samples collected from Kermanshah province, Iran. Based on morphological characters, twenty two isolates assigned to the FFSC and were identified as F. proliferatum (ten isolates), F. verticillioides (seven isolates)...

Journal: :Applied and environmental microbiology 1999
C J Kedera R D Plattner A E Desjardins

Maize kernel samples were collected in 1996 from smallholder farm storages in the districts of Bomet, Bungoma, Kakamega, Kericho, Kisii, Nandi, Siaya, Trans Nzoia, and Vihiga in the tropical highlands of western Kenya. Two-thirds of the samples were good-quality maize, and one-third were poor-quality maize with a high incidence of visibly diseased kernels. One hundred fifty-three maize samples ...

Journal: :Applied and environmental microbiology 1999
E T Steenkamp B D Wingfield T A Coutinho M J Wingfield W F Marasas

Fusarium subglutinans f. sp. pini (= F. circinatum) is a pathogen of pine and is one of eight mating populations (i.e., biological species) in the Gibberella fujikuroi species complex. This species complex includes F. thapsinum, F. moniliforme (= F. verticillioides), F. nygamai, and F. proliferatum, as well as F. subglutinans associated with sugarcane, maize, mango, and pineapple. Differentiati...

Journal: رستنیها 2014
Abdollah Ahmadpour Khalil Berdi Fotouhifar Mohammad Javan-Nikkhah, Zeinab Heidarian

The Gibberella fujikuroi species complex with Fusarium anamorphs is the causal of diverse diseases of many important plants. Many of the known species in this species complex produce a wide range of secondary metabolites. In this study, morphological characteristics of 46 isolates from rice, maize, sugarcane and onion and phylogenetic relationships of 22 isolates on the basis of ITS1-5.8S-ITS2 ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1388

abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1388

this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...

پایان نامه :0 1374

in fact, this study focused on the following questions: 1. is there any difference between the effect of functional/notional approach and the structural approaches to language teaching on the proficiency test of efl learners? 2. can a rather innovative language test referred to as "functional test" ge devised so so to measure the proficiency test of efl learners, and thus be as much reliable an...

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