نتایج جستجو برای: speed of germination

تعداد نتایج: 21178105  

Extended Abstract  Introduction: Germination is considered the first and most important stage of establishment and consequently, successful competition which is influenced by genetic and environmental factors. Among the environmental factors influencing the germination, temperature and light are the most important ones. Using different models, the germination response of seeds to temperature c...

Journal: :بوم شناسی کشاورزی 0
سعید خانی نژاد محمد خواجه حسینی

production of beneficial halophytes such as kochia (kochia scoparia) using saline waters and soils is one of the most sustainable methods of conservation in desert ecosystems. kochia is one of the most common annual halophytes grown in iran. seed germination of four ecotypes of kochia in saline conditions was carried out using factorial based on completely randomized design with four replicates...

Journal: :علوم گیاهان زراعی ایران 0
سید محمد امین فانی یزدی دانشگاه پیام نور، گروه علمی کشاورزی، 4697-19395 تهران محمد رضوانی دانشگاه آزاد اسلامی، واحد قائمشهر، گروه شناسایی و مبارزه با علف های هرز، قائمشهر محمد حسن راشد محصل دانشگاه فردوسی مشهد حسن کرم زاده دانشگاه آزاد اسلامی واحد قائمشهر

in order to investigate factors affecting on seed germinating of london rocket (sisymbrium irio), lab experiments were set up in 2011 at the payamenoor university, mashhad, khorasan razavi province. effect of different concentrations of gibberellic acid (ga3) and cytokinin, wet and dry prechilling duration, hydrogen peroxide duration, ethanol, salt and osmotic stress and burial depth on seed ge...

Journal: :desert 0
h. joneidi jafari assistant professor, university of kurdistan, sanandaj, iran h. azarnivand professor, university of tehran, karaj, iran a. sadeghipour assistant professor, university of semnan, semnan, iran a. malekian assistant professor, university of tehran, karaj, iran

salinity is one of the environmental factors that have a critical influence on the germination of seeds and plant establishment. salinity affects imbibition, germination and root elongation. in this study, the germination characteristics of matricaria comomilla and thymus deanensis were studied. the purpose of this study was to investigate the effect of salinity on germination of these species....

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...

احمدی لاشکی, محسن , صداقت حور, شهرام, هاشم آبادی, داود, کاویانی, بهزاد,

Salinity is one of the most important ecological stresses which have undesirable effects on seed germination. This study was carried out to evaluate the germination of three species of lawn (Poa pratensis, Lolium perenne, Cynodon dactylon) seeds under salinity stress. The effect of different treatments (Gibberellins 50 mgl-1, 2% CaCl2 and hydroprimig in 24 hours) was evaluated on total germinat...

علوی سینی, سید محمد , شکاری, فرید , عبداله زاده, نسیبه , فتوت, رضا ,

To evaluation of genetic parameters of rooting traits in 50 doubled haploid barley lines, a factorial experiment based on CRD was carried out at the agronomy lab of the Zanjan University Analysis of variance showed significant differencesfor all rooting traits:material transfering speed, germination percent, angle, diameter, fresh and dry weight, surface area, cumulative length, the length of t...

The physiological process of germination depends on several environmental factors such as temperature, water potential, light, nutrients and smoke. Water and temperature are determinant factors for seed germination. Both factors can, separately or jointly, affect the germination percentage and germination rate. The effect of temperature on germination and water potential on germination canoften...

Journal: :حفاظت گیاهان 0
ابراهیم کازرونی منفرد سمیه تکاسی محمد بنایان اول

the allelopathic effects of various concentrations (0 (as control), 5 %, 10 %, 20 % and 40%) of berseem clover shoot extracts were assayed on germination and radicle growth of four weed species ( amaranthus hybridus, amaranthus albus, solanum nigrum and chenopodium album) as completely randomized factorial with 3 replications. the effect of aqueous extract concentration of berseem clover on the...

Journal: :حفاظت گیاهان 0
سهرابی سهرابی راشد محصل راشد محصل نصیری محلاتی نصیری محلاتی موسوی موسوی

abstract r. ficaria is an invasive perennial and tuberous roots weed. the most important means of its reproduction and dispersion are tubers. in order to study the effect of droughty and freezing on germination of lesser celandine tubers, two experiments were conducted at weed science laboratory of faculty of agriculture ferdowsi university of mashhad in 2008. the experiment was a completely ra...

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