نتایج جستجو برای: zinc zn is an essential micronutrient needed by plants

تعداد نتایج: 11311144  

Journal: :تحقیقات آب و خاک ایران 0
فرشته ولیزاده فرد دانشجوی سابق کارشناسی ارشد، گروه علوم خاک دانشگاه تبریز عادل ریجانی تبار استادیار گروه علوم خاک دانشگاه تبریز نصرت اله نجفی دانشیار گروه علوم خاک دانشگاه تبریز شاهین اوستان دانشیار گروه علوم خاک دانشگاه تبریز

cadmium is one of the most toxic pollutants in the surface soil layer the accumulation of which in soils as well as in crops is of increasing concern. in addition, zinc is a micronutrient in rice nutrition which is in interaction with cd. a pot experiment was carried out to study the effects of zinc and cadmium on rice growth and as well on concentrations of zn, cd, fe and mn in soil. a factori...

Journal: :علوم گیاهان زراعی ایران 0
محسن بیگی دانشجوی ارشد تهران غلامرضا ثواقبی دانشیار دانشگاه تهران بابک متشرع زاده استادیار دانشگاه تهران

zink deficiency in calcareous soils of arid and semi-arid regions is a limiting factor for crop yield. bean is considered as one of sensitive plants to zinc (zn) deficiency. to study the responses of various bean genotypes to soil zinc deficiency, a greenhouse experiment was carried out. a factorial completely randomized design with three replications was conducted. the first factor was two lev...

2013
Carolina Astudillo Andrea C. Fernandez Matthew W. Blair Karen A. Cichy

Zinc is an essential mineral for humans and plants and is involved in many physiological and biochemical processes. In humans, Zn deficiency has been associated with retarded growth and reduction of immune response. In plants, Zn is an essential component of more than 300 enzymes including RNA polymerase, alkaline phosphatase, alcohol dehydrogenase, Cu/Zn superoxidase dismutase, and carbonic an...

2014
Pushparajah Thavarajah Dil Thavarajah

Biofortification of commonly eaten staple food crops with essential mineral micronutrients is a potential sustainable solution to global micronutrient malnutrition. Because phytic acid (PA; 1,2,3,4,5,6-hexakis myo-inositol) reduces mineral micronutrient bioavailability, reduction of PA levels could increase the bioavailability of biofortified iron (Fe), zinc (Zn), calcium (Ca), and magnesium (M...

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

the changes in todays world organization, to the extent that instability can be characterized with the most stable organizations called this afternoon. if you ever change management component, an additional value to the organization was considered, today, these elements become the foundation the organization is survival. the definition of the entrepreneur to identify opportunities to exploit a...

Journal: :علوم باغبانی 0
شیرین ناطقی علیرضا پیرزاد رضا درویش زاده

the higher levels of essential elements in soil may be caused in optimum yields and crop quality. so it seems to be necessary to examine different levels of nutrients like fe and zn on plants and their productivity. to evaluate effects of iron and zinc application on yield and yield components of pimpinella anisum an experiment was conducted at the research farm of urmia university in 2009. tre...

متاعی, سمیرا, امیرنیا, رضا , تاجبخش , مهدی , عبدالهی مندولکانی, بابک,

In order to evaluate effects of iron, zinc and manganese, and the methods of applying them on yield and yield components of sweet corn, an experiment was performed as factorial based on randomized complete block design with four replications at the Research Farm of Urmia University, during 2009-2010. Experimental factors were micronutrient fertilizers with four levels (control, iron, zinc and m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده ادبیات و علوم انسانی 1390

abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...

Journal: :Journal of experimental botany 2007
Yasuhiro Ishimaru Hiroshi Masuda Motofumi Suzuki Khurram Bashir Michiko Takahashi Hiromi Nakanishi Satoshi Mori Naoko K Nishizawa

Zinc (Zn), an essential nutrient in cells, plays a vital role in controlling cellular processes such as growth, development, and differentiation. Although the mechanisms of Zn translocation in rice plants (Oryza sativa) are not fully understood, it has recently received increased interest. OsZIP4 is a Zn transporter that localizes to apical cells. Transgenic rice plants overexpressing the OsZIP...

ژورنال: علوم آب و خاک 2013
افیونی, مجید, حاج عباسی, محمدعلی, خوش گفتارمنش, امیرحسین , خادمی, حسین , عبدی, علی, کرمی, مهِِِین ,

Zinc (Zn) is an essential trace element for plants as well as for animals and humans. There is a significant relationship between soils, plants and humans Zn status in a certain agro-ecosystem. The objectives of this study were to assess Zn status of soils in 3 arid and semiarid provinces of Iran and to model the relationship between wheat grain Zn and agro-ecosystem parameters. About 137 soil ...

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