نتایج جستجو برای: but no effect on shoot phosphorus

تعداد نتایج: 10616299  

Journal: :Plant physiology 1989
A L Fredeen I M Rao N Terry

Soybean plants (Glycine max [L.] Merr var Amsoy 71) were grown in growth chambers with high-phosphorus (high-P) and low-phosphorus (low-P) culture solutions. Low-P treatment reduced shoot growth significantly 7 days after treatment began. Root growth was much less affected by low-P, there being no significant reduction in root growth rate until 17 days had elapsed. The results suggest that low-...

Journal: :علوم باغبانی 0
شادی محمدی نژاد منصور غلامی محمود اثنی عشری

this research was conducted to study the factors affecting establishment, growth and shoot proliferation of persian walnut, genotype z60. explant establishment was studied through a factorial experiment based on a completely randomized design with two factors including culture media (dkw and wpm) and ba concentration (0 (control), 0.5 and 1.0 µm). single-node explants were prepared from the you...

2005
Arun Dev Sharma Neha Singh Jagjeet Kaur Kang

Short-term waterlogging stress-induced changes in phosphatase (P-ase) activities in relationship with phosphorus were studied in sorghum (Sorghum bicolor). Waterlogging was imposed by watering 3-day-old grown seedlings with water. The shoots and roots were harvested and P-ase activities were estimated. Significant waterlogging stress-induced increase in shoot and root P-ase activities coupled w...

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

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

حمزه‌نژاد, رقیه , رسولی صدقیانی, میرحسن , مرادی, ندا ,

This study was conducted to investigate the effect of type and ratio of vermicompost on tomato growth, with five different types of vermicompost (platanus leaves, maple leaves, pruning apple trees and grape, waste of herbal extracts and azolla residues) and four ratios of vermicompost to peat and perlite (2:1 v/v) as 0, 1:3, 2:3 and 3:3, at greenhouse conditions. Results showed that type of ver...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

Journal: :American journal of botany 2000
T R Bates J P Lynch

Arabidopsis thaliana root hairs grow longer and denser in response to low-phosphorus availability. In addition, plants with the root hair response acquire more phosphorus than mutants that have root hairs that do not respond to phosphorus limiting conditions. The purpose of this experiment was to determine the efficiency of root hairs in phosphorus acquisition at high- and low-phosphorus availa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1389

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...

Journal: :تحقیقات آب و خاک ایران 0
حسین بشارتی سیداحمد سادات نوری امیربردیا نیکنیایی حمید ایران نژاد علی اکبری علیرضا فلاح نصرت آبادی

application of sulfur as a means of lowering soil ph (even if at micro sites) is one way to increase the availability of insoluble nutrients/ effectiveness of elemental sulfur in lowering soil ph depends on the activity of sulfur oxidizing bacteria especially, thiobacillus genus/ to evaluate the possibility of partially substituting sulfur along thiobacillus inoculum for phosphorus and micronut...

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