نتایج جستجو برای: harmonic mean harm were estimated based on grain yield under stress ys and non

تعداد نتایج: 19118167  

ارزانی, احمد, اکبریان, ابوالقاسم, صالحی, مریم ,

Development of cultivars better adapted to drought stress in the arid and semi arid climatic conditions is considered as a major breeding objective. Grain quality is a trait with physico-chemical complexity depending primarily on genotype, is strongly affected by environmental factors and their interactions. Effect of terminal drought stress on quality traits of 18 triticale lines, comprising o...

Drought stress is considered as one of the most important constraints to the crop production, including medicinal plants in many arid and semi-arid regions. This study was carried out to determine the most effective indices for drought tolerance and identification of tolerance genotypes under drought conditions in N. sativa. For this purpose, 36 genotypes of N. sativa were tested as a split plo...

Journal: :علوم گیاهان زراعی ایران 0
محمد مدرسی استادیار دانشکده کشاورزی و منابع طبیعی دانشگاه خلیج فارس، بوشهر ولی اله محمدی استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران عباسعلی زالی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران محسن مردی دانشیار بخش ژنومیکس پژوهشکده بیوتکنولوژی کشاورزی ایران

continual heat stress affects approximately 7 million hectares of wheat in developing countries, while terminal heat stress is a problem in 40% of temperate environments, which cover 36 million hectares throughout the world. heat tolerance is a quantitative and complex trait that doesn’t have much success in direct selection. for this purpose, however, a thorough understanding of physiological ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1391

the present study sought to investigate the impact of using mind-mapping technique instruction on female elementary efl learners reading comprehension; it also investigated their attitudes towards using mind-mapping technique as a tool to improve their reading comprehension. this study followed a quasi-experimental design with two intact groups as experimental, and control groups. the participa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

Journal: :علوم گیاهان زراعی ایران 0
ساناز وزیری کارشناس ارشد، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات خوزستان احمد نادری دانشیار مرکز تحقیقات کشاورزی و منابع طبیعی خوزستان

one of the soil and water management practices in order to delay drought stress under water deficit condition; is superabsorbent application. in order to study the effect of  superabsorbent application on yield and yield components, two antioxidant enzymes activity and water relation of two canola hybrids under terminal drought stress condition, a research was carried out in ahvaz climate condi...

اهری زاد, سعید, درویش زاده, رضا, سلیمانی, علی, علی پور, هادی, ولی زاده, مصطفی,

In order to evaluation of gain yield and yield components in spring barely genotypes under normal and drought stress in flowering stage and identifying drought tolerant genotypes, sixteen barely genotypes were investigated in two separately Randomized Complete Block Design with three replications in West Azerbaijan Agricultural and Natural Resources Research Center, Urmia, Iran in agronomic sea...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - پژوهشکده علوم انسانی و اجتماعی 1391

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...

ژورنال: علوم آب و خاک 2007
عبدالمهدی رنجبری, , محمدجعفر بحرانی, , یحیی امام, ,

Drought stress is one of the major limiting factors of crop yield. A field experiment was conducted to study the effects of drought stress on yield and yield components of nine bread wheat and one durum wheat genotypes during 2003-2004 growing season. The experiment was designed as two separate randomized complete blocks design with three replicates under well-watered and unwatered conditions...

عبدالمهدی رنجبری, , محمدجعفر بحرانی, , یحیی امام, ,

Drought stress is one of the major limiting factors of crop yield. A field experiment was conducted to study the effects of drought stress on yield and yield components of nine bread wheat and one durum wheat genotypes during 2003-2004 growing season. The experiment was designed as two separate randomized complete blocks design with three replicates under well-watered and unwatered conditions d...

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