نتایج جستجو برای: semi tolerant and sensitive to water stress

تعداد نتایج: 18473398  

Journal: :علوم گیاهان زراعی ایران 0
رضا کشاورزنیا دانشجوی دکتری مهندسی ژنتیک، دانشگاه تهران مریم شهبازی استادیار، مؤسسۀ بیوتکنولوژی کشاورزی سازمان آموزش، تحقیقات و ترویج کشاورزی ولی اله محمدی دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران قاسم حسینی سالکده دانشیار، مؤسسۀ بیوتکنولوژی کشاورزی سازمان آموزش، تحقیقات و ترویج کشاورزی علی احمدی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران احسان محسنی فرد دانشجوی دکتری، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد

abstract drought is the most important factor limiting crop yield word wide. osmotic adjustment (oa) and strong and deep root system result in increased cereal drought tolerance through increasing water uptake and water use efficiency. the impact of root structure and physiological traits on drought stress response was studied in three barley cultivars including yousof (drought tolerant), moroc...

Thyme is one of the best known genera within Labiatae family, because of its more than 250 species and its antimicrobial and antispasmodic uses. At the present time, demand for thyme products are increasing and hence research demand is increasing. Environmental factors such as drought can affect plant growth and production. Phytohormones take a crucial role in this stress. Indicated T. serpyllu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

Journal: Journal of Nuts 2013
A. Yadollahi K. Arzani S. Karimi

Drought is one of the major limitations to crop production worldwide. This study was conducted to evaluate the response of five almond genotypes and peach×almond hybrid GF to drought stress in vitro, and screening drought tolerance. Explants subjected to polyethylene glycol osmotic stress ( , , and . % WV) on the MS medium. Increasing PEG level in the medium significantly reduced fresh weight a...

Journal: :آب و خاک 0
حمید رضا مهرآبادی احمد نظامی محمد کافی ملیحه احمدی فرد

introduction: more plains of iran are located in arid and semi-arid regions and so agricultural production systems depend heavily on water. recently, the reduction of water resources has become a serious threat for crop production such as cotton planting. therefore, application of low irrigation methods can be an appropriate method to cope with mentioned condition. in addition, it is vital to i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Journal: :international journal of advanced biological and biomedical research 0
hossein sabet zangeneh ph.d. student of weed science, department of agronomy and plant breeding, faculty of agriculture, university of mohaghegh ardabili, ardabil, iran hamid reza mohammaddust chamanabad associate prof. department of agronomy and plant breeding, faculty of agriculture, university of mohaghegh ardabili, ardabil, iran eskander zand professor. weed research institute of plant protection,tehran, iran ali asgheri associate prof. department of agronomy and plant breeding, faculty of agriculture, university of mohaghegh ardabili, ardabil, iran khalil alamisaeid assistant prof. department of agronomy and plant breeding, faculty of agriculture, university of ramin, ahvaz, iran

laboratory studies were conducted to compare the relative fitness of clodinafop-propargyl herbicide resistant lolium rigidum accessions with their clodinafop-propargyl susceptible counterparts in 2014. factors evaluated were lolium populations at constant salinity stress (0, 5, 10, 15, 20 and 25 ds cm2) and water stress (0, -3, -6, -9, -12 and -15 bar). the maximum germination in salinity stres...

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