نتایج جستجو برای: a decreased photosynthetic area leaves a more pronounced impact on plant productivity

تعداد نتایج: 16222749  

Arsenic contamination in soils often leads to groundwater contamination and arsenic toxicity in plants, humans and animals. Plant hormones play a quantitative and qualitative role in the coordination of growth and yield in plants. In this research the effects of gibberellin and sodium arsenate in different genotypes of rice were studied. The work has been conducted as a factorial experiment bas...

Journal: :Frontiers in Plant Science 2021

The Tibetan Plateau is highly sensitive to elevated temperatures and has experienced significant climate warming in the last decades. While known greatly impact alpine ecosystems, gas exchange responses at leaf community levels meadow ecosystems remain unclear. In this study, grass, Elymus nutans , forb, Potentilla anserina were grown open-top chambers (OTCs) for 3 consecutive years evaluate th...

Journal: :journal of agricultural science and technology 2014
a. aien m. pal s. khetarpal s. kumar pandey

concentration of co2 in the atmosphere is likely to increase up to 550 µmol mol-1 by the middle of 21st century. such an increase in the atmospheric co2 would affect plant growth, and as well the productivity of crop plants. a field experiment was conducted with two potato cultivars namely kufri surya and kufri chipsona-3 grown inside open top chambers (otcs) at ambient (385±30 µmol mol-1) vs. ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده ادبیات و زبانهای خارجی 1391

this study was an attempt to investigate the effect of teaching meta cognitive strategies on iranian intermediate efl students speaking proficiency. in this study the researcher has employed metacognitive strategies taken from brown (2000) to teach speaking strategies to number of participants. the participants were intermediate students of shokouh language institute; they were divided into an ...

Andrographis paniculata (Burm.f.) Nees is a medicinal herb in the family Acanthaceae. The leaves of the mature plant contain abundant diterpinoids of medicinal properties.The objectives of the present study were to investigate the impacts of compost tea rates on photosynthesis parameters and antioxidant reactions of A. paniculata. The plant was propagated using seed and planting in a polybag. A...

Journal: :international journal of advanced biological and biomedical research 2014
ali salehi sardoei

field trials with dizigotheeca elegantissima were conducted at the experimental farm of faculty of agriculture, azad university  jiroft  in growth seasons of 2012 year. the aim of this work was to study the effect of foliar application of gibberellic acid [ga3] and benzyladenine [ba] at 0, 50, 100 and 150 mgl-1 on the vegetative growth and photosynthetic pigments of d. elegantissima plants. mos...

Journal: :international journal of advanced biological and biomedical research 2014
ali salehi sardoei parviz rahbarian afshar fallah imani

field trials with ficus benjamina l.were conducted at the experimental farm of faculty of agriculture, university azad jiroft in 2012 growth seasons. the aim of this work is to study the effect of foliar application with gibberellic acid (ga3) and benzyladenine (ba) at 0, 100 and 200 mg.l-1 on the vegetative growth and photosynthetic pigments of ficus benjamina plants. the obtained results show...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - پژوهشکده ادبیات 1392

abstract the aim of the present study is to explore the impact of the cognitive reading strategy instruction on learners reading self-efficacy and their reading achievement. in order to fulfill this purpose, from 120 participants, 90 intermediate efl learners as an experimental group were chosen from three different educational settings namely, yazd university, yazd science and art un...

Journal: :iranian journal of science and technology (sciences) 2012
m. shariati

the changes of chl a fluorescence induction curve in response to different salinity levels in canola (barassica napus, l.) plants were investigated. the canola seedlings were exposed to salt stress (100 mm and 200 mm nacl) for 7 days and chl a fluorescence induction kinetics was analysed. by using the ojip-test, various parameters like vj, area, n, φpo, φeo, ψo, rc/abs and piabs were calculated...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1390

abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...

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