نتایج جستجو برای: wet and dry weight of petridish grown seedling and seed emergence characteristics emergence percentage

تعداد نتایج: 24090412  

Journal: :پژوهش های حبوبات ایران 0
مجید قنبری کامران منصورقناعی پاشاکی صابر صفایی عبدالمناف خدیجه عزیز علی آبادی

introduction legumes are the most important source of vegetable protein supply. mungbean (vigna radiate (l.) wilczek) produces seeds contain 22-25 percent protein and high nutritional value for human and also is a major source of protein in most modern societies. rapid seed germination and emergency, is an important factor determining the ultimate yield of the plant. salinity is the most import...

Journal: :علوم گیاهان زراعی ایران 0
مریم اکرمی وشته دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی، واحد کرج سعید وزان دانشیار دانشگاه آزاد اسلامی، واحد کرج مصطفی اویسی استادیار پردیس ابوریحان، دانشگاه تهران محمد عبداللهیان نوقابی دانشیار موسسه تحقیقات چغندرقند

prediction of seasonal weed seedling emergence patterns is useful in weed management programs. this study was carried out in research fields of islamic azad university – karaj branch in 2009-2010. five crop fields were chosen including: barley, sugar beet and three wheat fields and in each fields between 3 to 5 sites selected randomly. three quadrates were fixed in each sites for studying weeds...

Journal: :بوم شناسی کشاورزی 0
شهرام رضوان بیدختی احمد نظامی محمد کافی حمید رضا خزاعی

in order to evaluate the effect of freezing stress on electrolyte leakage of three mooseers’ (allium altissimum regel.) ecotypes (shirvan, kalat and tandoureh), a factorial experiment based on completely randomized design with three replications was carried out under the controlled conditions in the faculty of agricultural, ferdowsi university of mashhad, iran, during 2009. plants were grown in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

2008
Itziar R. Urbieta Ignacio M. Pérez-Ramos Miguel A. Zavala Teodoro Marañón Richard K. Kobe

Tree species can differ in their responses to resource availability during the critical phase of establishment, which could influence forest dynamics. In Mediterranean forests, most of the attention has focused on the effects of shade and summer drought on seedling survival, but little is known about the effect of autumn to spring rains on earlier stages of recruitment. A sowing experiment was ...

Extended Abstract Introduction: Drought stress, as abiotic and multidimensional stress, has severe effects on plant growth. One of the new approaches in the management of drought stress is the use of nanoparticles. Nanoparticles infilterate the seeds and increase nutrient and water uptake and ultimately, improve germination. The present research was conducted to evaluate the effects of titaniu...

Journal: :journal of agricultural science and technology 2009
n. majnoun hosseini k. h. m. siddique j. a. palta j. berger

at the crop level, the drought stress accounts for most variations in yield. a controlled glasshouse investigation at day/night temperatures of 22/15°c based at perth city, western australia was performed (in 2006) to assess the influence of different soil moisture contents (field capacity percentage basis) on emergence as well as early plant growth in twenty chickpea genotypes. the experiment ...

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
h naghdi badi faculty of agriculture, tarbiat modares university, tehran a sorooshzadeh faculty of agriculture, tarbiat modares university, p.o.box: 14115-336, tehran, iran m sharifi faculty of basic sciences, tarbiat modares university, tehran a ghalavand faculty of agriculture, tarbiat modares university, tehran s saadat department of soil reclamation and sustainable land management, soil and water research institute, tehran sh rezazadeh department of pharmacognosy and pharmaceutics, institute of medicinal plants, acecr, tehran

background: although borage ( borago officinalis l.) is a valuable medicinal plant, no information is available on the responses of this plant to salinity. for this reason, it is necessary to determine responses of this plant to salinity .  objective: since germination and early growth stage is one of the most critical phases of plant life under salinity condition this experiment was conducted ...

Journal: :زراعت دیم ایران 0
شبنم صادقی رازلیقی دانشجوی کارشناسی ارشد پردیس ابوریحان دانشگاه تهران ایرج الله داد دانشیار پردیس ابوریحان دانشگاه تهران عزت اله اسفندیاری استادیار دانشگاه مراغه

in order to study the effect of folic acid on seed reserves partitioning and early vigor of seedlings of kavir wheat cultivar, an experiment was conducted in a completely randomized design with 0, 12.5, 25, 50, 100 and 200 mm of folic acid. results of this study indicated that dry weight of seeds decreased in a same pattern in all treatments and about 6-8% of total seed was structural section. ...

2017
Frank Maulana Dilooshi Weerasooriya Tesfaye Tesso

Cold temperature is an important abiotic stress affecting sorghum production in temperate regions. It reduces seed germination, seedling emergence and seedling vigor thus limiting the production of the crop both temporally and spatially. The objectives of this study were (1) to assess early season cold temperature stress response of sorghum germplasm from cooler environments and identify source...

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