نتایج جستجو برای: background and objectives rice plant requires abundant water during its growth cycle and usually faced with water deficit drought stress alters the allocation assimilate

تعداد نتایج: 22544086  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ادبیات و علوم انسانی 1391

terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...

Journal: :journal of agricultural science and technology 2015
r. kumar s. yadav d. shrinivas a. kumar srivastava v. shitole

pigeonpea (cajanus cajan (l) millsp.) is a drought tolerant legume widely grown in the arid and semi-arid tropics of the world which possesses a deep and extensive root system that succors a number of important physiological and metabolic functions to cope with drought. application of available functional genomics approaches to improve productivity under water deficit requires a better understa...

Journal: :journal of agricultural science and technology 2009
b. pasban eslam

water deficit is an important factor limiting crop production worldwide. drought stress can be managed by improving the availability of soil moisture conserved and selecting drought tolerant genotypes. several physiological indices including stomatal conductance (kl), relative water content (rwc), leaf temperature (tl) and crop temperature stability (cts) along with yield, its components and se...

Journal: :بوم شناسی کشاورزی 0
مژگان سنجری میجانی علیرضا سیروس مهر براتعلی فاخری

introduction roselle (hibiscus sabdariffa l.) as a medicinal plant belongs to the malvacea family. their active ingredient increases under water stress. humic acid bacteria derived from humus and other natural resources have hormonal effects and can improve nutrient absorption to enhance performance especially under stress conditions . materials and methods this experiment was conducted in the ...

F Jamal Omidi H Mohajjel Shoja R Sariri

Melissa officinalis is a perennial herbaceous plant from Lamiaceae family, widely used in food and pharmaceutical industries to add aroma. Drought stress in plants may happen due to the increase in water loss, insufficient water absorption or both. Salicylic acid (SA) is an important secondary metabolite in plants with hormone-like action in some biochemical pathways. Adding it during water-def...

Journal: :journal of agricultural science and technology 2013
m. khodambashi b. shiran n. gharaghanipour

the response of plants to drought stress depends on several factors including the plant developmental stage and the length and severity of the stress applied. common bean (phaseolus vulgaris l.) is the most important pulse crop that is cultivated worldwide for human consumption. understanding of the mechanisms responsible for its response to drought is, therefore, essential. an increasing numbe...

Journal: :journal of crop protection 2015
saeid javadi khederi mohammad khanjani mohammad ahmad hoseini asghar hosseininia hassan safari

pepper plant capsicum annuum l. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as aphis gossypii glover, especially in drought stress conditions, has limited its production. to evaluate the effect of drought stress on the population and damage rate of this pest in greenhouse condition, four moisture treatments including; full irrigation, 15, 30 ...

Drought is a major factor that limiting plant growth. Mycorrhizal fungi can modified and improved water relation and drought stress with phosphorus and water absorption. In the other hand,Silicon is known as a positive factor that improved water and soil relation and reducing biotic and abiotic stress in some plants and resistant them against stress. Since the cucumber plants in earl...

Journal: :پژوهش های حبوبات ایران 0
ماندا صفوی سعید ملک زاده شفارودی علی گنجعلی عبدالرضا باقری

drought is the main constraint limiting chickpea productivity which makes a considerable difference between the potential and actual yield. in order to evaluate the effect of drought stress on different morpho-physiological characteristics of chickpea, four distinct genotypes were studied in three sampling times (pre-stress, stress and recovery) with three replications. as the results implicate...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

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