نتایج جستجو برای: defoliation did not affect grain weight at any spike position whereas

تعداد نتایج: 6191513  

Journal: :علوم گیاهان زراعی ایران 0
احمد رضا کوچکی استادیار، مؤسسۀ تحقیقات اصلاح و تهیۀ نهال و بذر کشور، کرج امیر یزدان سپاس دانشیار، مؤسسۀ تحقیقات اصلاح و تهیۀ نهال و بذر کشور، کرج محمد رضا مهرور استادیار، مؤسسۀ تحقیقات اصلاح و تهیۀ نهال و بذر کشور، کرج مانی معرفت زاده خامنه کارشناس ارشد، دانشگاه رازی کرمانشاه

drought stress is considered as one of the main important factors reducing field crop yield, thus leading researchers to study the related physiological characteristics may reduce drought effects. this experiment was conducted in research farm of seed and plant improvement institute (spii) in karadj, arak and jolgeh rokh for three cropping seasons (2008-2011) to evaluate drought tolerance of br...

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

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...

ژورنال: علوم آب و خاک 2007
امیر فیاض مقدم, , سکینه عبدی, , مرتضی قدیم زاده, ,

To determine the effects of different intensities of leaf removal at different reproduction stages of sunflower on seed yield and oil percentage, and the most sensitive stages to defoliation, an experiment was carried out by split-spilt plot design in randomized complete block with 3 replications at research farm, College of Agric. Urmia University, in 2004. The main factor, sub factor and su...

Journal: :به نژادی گیاهان زراعی و باغی 0
حسن عبدی مربی پژوهشی، بخش اصلاح و تهیۀ نهال و بذر، مرکز تحقیقات کشاورزی و منابع طبیعی استان تهران، ایران محمدرضا بی همتا استاد، گروه زراعت و اصلاح نباتات، دانشکدۀ علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران ابراهیم عزیز اف استاد، گروه زراعت و اصلاح نباتات، دانشکدۀ بوتانیک، دانشگاه ملی باکو، باکو، جمهوری آذربایجان رجب چوگان استادیار بخش تحقیقات ذرت و گیاهان علوفه ‏ای، مؤسسۀ اصلاح و تهیۀ نهال و بذر، کرج، ایران

a partial set of diallel crosses conducted among seven bread wheat genotypes contain (gasspard,m86-4,m86-6,dn-11,ws82-9 and m86-12) along with 21 hybrid, based on randomized complete block design(rcbd) with three replication were evaluated. the experiment was accomplished in a research field of agriculture and natural research center of tehran province in 2012-2013 in order to study genetic ana...

ژورنال: علوم آب و خاک 1998
میرلوحی, آقا فخر, فرجی, ابوالفضل ,

In order to study the effects of rate and time of nitrogen application on vegetative characters, i.e., yield and yield components of rice (Zayandeh-rood variety), an experiment was conducted at Isfahan University of Technology research farm during summer 1996. Four N rates including (60, 90, 120 and 150 KgN/ha) and four splitting form (1- all N applied before transplanting 2- 1/3 N applied befo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

رحمان رجبی رضا حق ‌پرست رضا محمدی مصطفی آقایی سربرزه,

  This study was conducted to evaluate the effect of drought stress on 22 durum wheat genotypes. Different characteristics such as grain weight per spike, plant biomass, 100 grain weight, free proline content in leaves, and percentage of cell membrane damage were studied in greenhouse and laboratory conditions. Genotypes were sown under normal irrigation and moisture stress conditions. In stres...

Journal: :Journal of economic entomology 2005
Sultan H Begna Dennis J Fielding

Barley, Hordeum vulgare L., is well adapted to subarctic Alaska growing conditions, but little is known about its response to grasshopper defoliation. A field experiment was conducted to study dry matter and grain yield in response to a combination of grasshopper defoliation and weeds in 2002 and 2003 near Delta Junction, AK (63 degrees 55' N, 145 degrees 20' W). Barley plants at third to fourt...

ژورنال: علوم آب و خاک 2007
محمود خدام باشی امامی, , سید حسین محمدی, , عبدالمجید رضایی, ,

Half diallel crosses of nine Iranian wheat cultivars were used to estimate the general and specific combining ability effects and other genetic parameters related to yield and its components. Parents with F2 generations were evaluated at Research Farm, College of Agriculture, University of Shahrekord, in a randomized complete block design with 3 replications. Partitioning of genotypes mean squa...

Among the crops, cereals have been special important and triticale is the most successful man made cereal. In present research, water deficit stress effects on 19 triticale genotypes (X Triticosecale wittmack) and two wheat cultivars (Triticum aestivum), Shiraz (sensitive to water deficit stress) and Kavir (tolerant to water deficit stress) were tested. Therefore, two separate field experiments...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید