نتایج جستجو برای: drought and normal conditions

تعداد نتایج: 16936999  

Journal: :جغرافیا و توسعه ناحیه ای 0
علیزاده علیزاده انصاری انصاری ارشادی ارشادی آشگرطوسی آشگرطوسی

agricultural drought in iran is considered as a natural disaster especially for the farmers. although nobody can stop drought, but if its nature and its characteristics are studied, it can be predicted and the results can be reduced. this article studies drought in the province of sistaan and balouchestaan and the drought predictability in the province has been done base on a model that is made...

جعفرزاده قهدریجانی, محسن, رشیدی, فاطمه, مجیدی, محمد مهدی, میرلوحی, آقافخر,

This research was conducted to assess the effect of drought stress on grain yield and some physiological characteristics of 28 canola cultivars. Cultivars were evaluated at two moisture environments (normal and drought stress) according to randomized complete block design. Results of analysis of variance showed that there was significant difference among canola cultivars for all measured traits...

Journal: :اکو هیدرولوژی 0
یعقوب نیازی دانشجوی دکتری علوم و مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه یزد علی طالبی دانشیار دانشکدۀ منابع طبیعی، دانشگاه یزد محمد حسین مختاری استادیار دانشکده منابع طبیعی، دانشگاه یزد مجید وظیفه دوست استادیار گروه مهندسی آب دانشگاه گیلان

monitoring and evolution of drought is the first step in any drought management system. in this study, evaluation of a new indexa new method is provided to monitor the severity of drought with remote sensing combined drought index (rcdi). the index is based on the fact that drought is a natural phenomenon caused by a combination of various factors such as a shortage in the amount of precipitati...

Journal: :اکو هیدرولوژی 0
محمدحسین جهانگیر استادیار گروه انرژی‏های نو و محیط زیست، دانشکدۀ علوم و فنون نوین، دانشگاه تهران میمنه خوش مشربان دانشجوی کارشناسی ‏ارشد رشتۀ مهندسی طبیعت، دانشکدۀ علوم و فنون نوین، دانشگاه تهران حسین یوسفی استادیار گروه انرژی‏های نو و محیط زیست، دانشکدۀ علوم و فنون نوین، دانشگاه تهران

drought is the one of the repeating phenomenon in all areas with high rainfall and low rainfall climates and is known as a natural disaster. iran is one of the countries those involved with this phenomenon in different parts of it especially in river basins. tehran province due to its importance in terms of social and political faced with growing population that it would contributes to the redu...

Journal: :Plant signaling & behavior 2009
Se-Jun Oh Youn Shic Kim Chang-Woo Kwon Hye Kyong Park Jin Seo Jeong Ju-Kon Kim

Transcription factors with an APETELA2 (AP2) domain have been implicated in various cellular processes involved in plant development and stress responses. Of the 139 AP2 genes predicted in rice (Oryza sativa), we identified 42 genes in our current study that are induced by one or more stress conditions, including drought, high salinity, low temperature, and abscisic acid. Phylogenic analysis of...

Journal: :تولید گیاهان زراعی 0

water deficient is one of the most important limiting factors in rapeseed (brassica napus l.) production in arid and semiarid areas speciallyiran, which is the best approach to deal with the introduction of resistant and compatible varieties to drought stress. the response of fourteen rapeseed cultivars to water stress was studied in a split plot experiment based on complete randomized block de...

Journal: :پژوهش های حبوبات ایران 0
محمدی محمدی بی همتا بی همتا دُری دُری

abstract in order to study the effects of quantitative and qualitative traits on cooking characteristics and protein percentage of 15 red bean genotypes, a randomized complete block design was conducted with three replications in normal irrigation and drought stress. these traits were measured in farm and nutrition laboratory employing international standard of ciat. analyses of variance showed...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده علوم 1388

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

ژورنال: علوم آب و خاک 2005
احد یامچی, , امیر موسوی, , سیروس قبادی, , فردوس رستگار جزی, , علی اصغر کارخانه‌ای, ,

Proline as a key osmoregulating solute in plants plays an overriding role in osmotic pressure adjustment of the cell under water stress conditions. In plant, a bifunctional enzyme delta-1-pyrroline-5-carboxylate synthetase (p5cs) promotes and directs proline synthesis during drought stress conditions. The activity of this enzyme is strongly induced to increase proline concentration within the c...

دادرس, احمدرضا, سمیع‌زاده, حبیب ا.., صبوری, حسین,

Evaluation of varieties and soybean lines under drought stress helps to breeders for detecting of stable and high-yielding genotypes. In this regard an experiment was conducted in randomized complete block design with three replications under normal and drought stress conditions across two locations (four environments). The results of combined analysis of grain yield/plant revealed effects of s...

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