نتایج جستجو برای: Germination indices

تعداد نتایج: 105621  

Journal: :international journal of advanced biological and biomedical research 2014
sepideh fazelian pejman tahmasebi kohyani hamze ali shirmardi

during last two decades studies on endozoochorous seed dispersal indicated that a large numbers of plant seeds are potentially dispersed and suceefully germinated via animal dung. however, very little is known about the relative importance of endozoochory in germination success of plant species in semi-steppe rangelands. in this paper we examined dung germinating seed content, seed deposition p...

2009
M. M. Heikal

Environmental stress, especially drought stress, can play an important role in the reduction of the plant growth stage, specifically duringgermination in arid and semi arid regions in Iran.. In order to study the effects of drought stress on germination indices in wheat cultivars, an experiment was conducted in factorial form, using a completely randomized design of four replications. In this e...

Journal: :Journal of experimental botany 2000
S J Steinmaus T S Prather J S Holt

Experiments were conducted to test several methods for estimating low temperature thresholds for seed germination. Temperature responses of nine weeds common in annual agroecosystems were assessed in temperature gradient experiments. Species included summer annuals (Amaranthus albus, A. palmeri, Digitaria sanguinalis, Echinochloa crus-galli, Portulaca oleracea, and Setaria glauca), winter annua...

Journal: :جنگل و فرآورده های چوب 0
زینب جوانمرد دانش آموختۀ کارشناسی ارشد جنگلداری دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور، ایران مسعود طبری کوچکسرایی استاد گروه جنگلداری دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور، ایران حمید رضا عیسوند استادیار گروه زراعت، دانشگاه لرستان، دانشکدۀ کشاورزی، خرم آباد، ایران فاطمه احمدلو دانشجوی دکتری جنگلداری دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور، ایران

to answer this question that if osmopriming improve germination indices in salinity-affected seeds of pinus eldarica medw., a factorial experiment in randomized completely design was carried out with three replications. osmotic treatments were applied in 5 levels (-2, -4, -6 and -8 bar for 72 hours and non-primed) by polyethylene glycol (peg) and salinity treatments in 8 levels (0, 40, 80, 120,...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0

in order to evaluation the effect of drought stress on germination indices and early seedling growth of medicinal herb dill (anethum graveolens l), an experiment was conducted in the agricultural laboratory of urmia payam noor university in 2015 as a randomized complete block design with four replications. treatments were five levels of drought stress (0, -1, -2, -3 and -4 bar induced by polyet...

Journal: :desert 2014
hamid abbasdokht ahmad gholami h. asghari

to study the effects of halopriming and hydropriming in overcoming salt and drought stress in corn (zea mays l.),two experiments were separately conducted at shahrood university of technology. seed treatments consisted ofcontrol (untreated seeds), soaking in distilled water for 32 h (hydropriming), and soaking in 50 mmol solution ofcacl2 for 16 h (halopriming). germination and early seedling gr...

Journal: :journal of chemical health risks 0
homa mahmoodzadeh reyhane aghili

the present study was aimed to investigate the effects of titanium dioxide nanoparticles (nano-tio 2 ) on wheat ( triticumaestivum l.) plants cv. parsi. the experimental treatments included seven concentrations of nano- tio 2 (10, 100, 1000, 1200, 1500 and 1700 ppm nano-tio 2 and control (without any tio 2 ). the results showed that among the wheat germination indices, germination rate and weig...

Journal: :علوم گیاهان زراعی ایران 0
اعظم عباس نژاد ناصر مجنون حسینی رضا توکل افشاری فرزاد شریف زاده

augment of germination rate is important in seedling establishment and crop yield. a set of study in laboratory & field conditions at agronomy department of university of tehran was conducted during 2004-2005. in lab. experiment the effects of seed priming was evaluated on germination indices (germination percentage and rate) of chickpea genotypes in a factorial experiment of 4×3×2 arranged in ...

Journal: :journal of chemical health risks 0
mehrzad sarabi department of biology, neyshabur branch, islamic azad university, neyshabur, iran akbar safipour afshar department of biology, neyshabur branch, islamic azad university, neyshabur, iran homa mahmoodzadeh department of biology, mashhad branch, islamic azad university, mashhad, iran

in this study, the effects of different concentrations of bulk and nano-sized ag on seed germination and seedling growth of canola were investigated in a randomized completely design with four replications. the experimental treatments included four concentrations of bulk agno 3 (10, 100, 500 and 1000 ppm), four concentrations of nanosized ag (10, 100, 500 and 1000 ppm), and the control without ...

2013
A. Almaghrabi

The aim of this work was to study the effect of copper (Cu) and/or cadmium (Cd) on grain germination and anatomical structure of Maize (Zea mays cv. Giza 2) seedling. The results indicated that Cu and/or Cd caused reduced the grain germination indices (FGP final germination percentage, MDG mean daily germination, GI germination index and CVG coefficient of velocity of germination), root anatomi...

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