نتایج جستجو برای: with different levels of resistance to powdery mildew

تعداد نتایج: 23093843  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1389

the current study examined iranian undergraduate efl students’ willingness to communicate with regard to their vocabulary knowledge. in general, participants were somewhat willing to communicate in english. the total mean score of 730 university students’ perception of willing to communicate was 83.53 out of 135. results, regarding four parts of willingness to communicate, revealed that part...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و زبانهای خارجی 1392

abstract i the purpose of this study was to launch a thorough investigation concerning the possibility of differing orientations to the writing proficiency construct by native and non-native english speaking teacher raters. it mainly revolved around the international english language testing system (ielts) that is widely administered and employed as a measure of general proficiency in englis...

Journal: :چغندرقند 0
مهیار شیخ الاسلامی عضو هیئت علمی مرکز تحقیقات کشاورزی کرمانشاه سید محمود اخوت هیئت علمی گروه گیاهپزشکی، دانشکده کشاورزی دانشگاه تهران قربانعلی حجارود هیئت علمی گروه گیاهپزشکی، دانشکده کشاورزی دانشگاه تهران عباس شریفی تهرانی هیئت علمی گروه گیاهپزشکی، دانشکده کشاورزی دانشگاه تهران محمد جوان نیکخواه هیئت علمی گروه گیاهپزشکی، دانشکده کشاورزی دانشگاه تهران توحید نجفی میرک مؤسسه تحقیقات اصلاح و تهیه نهال و بذر

pathogenicity of 4 isolates of erysiphe betae from 4 different geographical zones of iran on 5 genotypes of beet, with different levels of resistance to powdery mildew, was investigated. eight-week old plants were inoculated by conidia from 4 isolates separately. indices for infection were estimation of leaf infection and number of produced conidia on the leaf surface 3 weeks after inoculation....

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه امام رضا علیه السلام - دانشکده ادبیات و زبانهای خارجی 1392

cognitive studies of translation process have recently been awarded a great deal of attention. there exists a psychological angle to almost all translation activities. the present study, thus, deals with analysing the relationships between iranian prospective translators tolerance for ambiguity (ta) and their willingness to translate (wtt). the research was conducted as a mixed methods study, d...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده تربیت بدنی علوم ورزشی 1390

this research was conducted to examine the effect of a concurrent training on rest level of leptin of plasma and some hormonal factors in non-athlete subjects. the research population included non-athlete men who didn’t participate in any organized sport activities. 30 men were chosen voluntarily among the above-mentioned population and were divided into 2 groups: experimental (15 subjects) an...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

august wilson is undoubtedly one of the rare black playwrights whose works have attracted streams of attention and worldwide audience. the present study aims at analyzing fences and piano lesson which are two of the most successful plays in his pittsburgh cycle from the perspective of michel foucault’s theories and ideas. studying these two plays from foucault’s perspective opens new windows in...

2001
Sixin Liu C. A. Griffey A. Saghai Maroof

1998). Even though race-specific resistance has been extensively used in wheat breeding programs, selection Powdery mildew, caused by Blumeria graminis (DC.) E.O. Speer pressure exerted by cultivars with race-specific resisf. sp. tritici Em. Marchal (syn. Erysiphe graminis f. sp. tritici ), is one of the major diseases of wheat (Triticum aestivum L.) worldwide. tance genes results in the rapid ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1389

abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...

2007
M. J. Y. Shtaya D. Rubiales

A set of 23 recombinant lines (RLs) of barley (Hordeum vulgare L.) derived from H. vulgare · H. bulbosum L. crosses was inoculated with barley leaf rust (Puccinia hordei) and powdery mildew (Blumeria graminis f.sp. hordei) at the seedling stage to identify their levels and mechanisms of resistance. Eight RLs were studied further in glasshouse and field tests. All three barley parents ( Emir , G...

2016
Lingmin Dai Dan Wang Xiaoqing Xie Chaohong Zhang Xiping Wang Yan Xu Yuejin Wang Jianxia Zhang

Pathogenesis-related proteins (PRs) can lead to increased resistance of the whole plant to pathogen attack. Here, we isolate and characterize a PR-4 protein (VpPR4-1) from a wild Chinese grape Vitis pseudoreticulata which shows greatly elevated transcription following powdery mildew infection. Its expression profiles under a number of abiotic stresses were also investigated. Powdery mildew, sal...

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