نتایج جستجو برای: and drought indices

تعداد نتایج: 16840303  

Journal: :آب و خاک 0
علیرضا حیدری رجب چوکان عسکری تشکری حسین کلانتری

abstract to determine the effects of different levels of drought stress on yield and yield components of corn hybrids as well as to determine the correlation between the characteristic and yield in different level of stress a experimental study was done in split plot with 15 corn hybrids placed in gharakheil. the main plot was contained different levels of stress(a1:irrigation after 50mm evapor...

Journal: :چغندرقند 0
رحیم محمدیان مرکز تحقیقات کشاورزی و منابع طبیعی خراسان سید یعقوب صادقیان مطهر هیئت علمی موسسه تحقیقات اصلاح و تهیه بذرچغندرقند محمد مقدم واحد دانشکده کشاورزی دانشگاه تبریز حمید رحیمیان دانشکده کشاورزی دانشگاه تهران

this study was conducted over a three-year period (1998, 1999 and 2000) to evaluate some drought tolerance indices and their relations with sugar yield in some sugar beet genotypes under early season drought and non-drought conditions. the experimental design was a split plot with a randomized complete block. the main plots consisted of two irrigation regimes: non-stress and water stress in ear...

Seyed Afshin Safavi Seyed Mehdi Safavi, Seyyed Saeid Pourdad

This study was conducted to determine drought tolerance genotypes with superiority in different stressed environments. To screening quantitative indices of drought tolerance, genotypes of safflower (Carthamus tinctorius L.) were tested in a complete randomized block design with three replications under two different water regimes (irrigated and rainfed). Significant positive correlatio...

Breeding of rice for drought tolerance requires proper evaluation and analysis of genetic diversity in breeding populations related to drought tolerance. In order to identify indices for tolerant and sensitive rice genotypes to drought stress, an experiment with 59 genotypes of rice was conducted based of a complete block design with three replications in non-stressed (flooding) and stressed co...

ژورنال: علوم آب و خاک 2016
خشوعی اصفهانی, مهرداد, زمانی, احمدرضا, صفوی, حمیدرضا,

Drought is an extended period of low precipitation which resulted in injuries to consumers of water and reducing their performance, especially in agriculture. Different indices have already been proposed for evaluating drought, based on one of the varieties of meteorological, hydrological and agricultural droughts, but no indices has been identified yet, encompassing all factors. This study has...

ژورنال: علوم آب و خاک 2007
مجید طوسی مجرد, , محمدرضا قنادها, ,

In order to evaluate grain yield potential and study dry matter remobilization to seed, 8 commercial bread wheat cultivars were examined in two separate experiments, using randomized complete block design with 4 replications in 2003. There were significant differences for most traits in normal and drought conditions. Sarday variety had the least grain yield in the two environments. There was c...

2012
Mahdi Zare

Drought is an important factor limiting crop production in arid and semi-arid conditions. Drought indices which provide a measure of drought based on yield loss under drought condition in comparison to normal condition was used for screening drought-tolerant genotypes. This study was conducted to determine drought tolerant genotypes with high yield in stress and non-stress conditions. Ten barle...

ژورنال: علوم آب و خاک 2008
رضایی, عبدالمجید, یوسفی‌آذر, معصومه,

  This study was conducted at Research Farm of Isfahan University of Technology to evaluate drought tolerance potential of 23 F2:4 wheat lines derived from the cross of Virmarin (susceptible line) and Sardari (tolerant line). A randomized complete block design with three replications was used in each irrigation treatment (i.e. irrigation after 70±3 and 120±3 mm evaporation from class A pan for ...

فرشادفر, عزت ا..., حیدری, بهرام , ساعد موچشی, آرمین,

In order to evaluate drought tolerance indices in chickpea, determination of the best indicator of drought tolerance and identifying tolerant cultivars in water limited condition, a randomized complete block design (RCBD) with three replications and 20 chickpea genotypes was used under irrigation and rainfed conditions at research farm of College of Agriculture, Razi University, Kermanshah. Th...

Journal: :تحقیقات مهندسی کشاورزی 0
فاطمه میرزایی ندوشن دانش آموخته کارشناسی ارشد دانشگاه تهران سعید مرید دانشیار دانشگاه تربیت مدرس صالح ارشد دانش آموخته دکتری دانشگاه تربیت مدرس

agricultural drought has resulted in great damage to iran in recent years and it is crucial to cope with this adversity through logical management. one attempt in this regard is to compare affected sites and prioritize them for action plans. this paper develops a methodology for agricultural drought risk analysis based on rain-fed wheat data from kermanshah province and employs it to compare af...

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