نتایج جستجو برای: number of normal seedling

تعداد نتایج: 21208616  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...

2005
MARÍA URIARTE CHARLES D. CANHAM JILL THOMPSON

1 We used inverse modelling to parameterize spatially-explicit seedling recruitment functions for nine canopy tree species in the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico. We modelled the observed spatial variation in seedling recruitment following Hurricane Georges as a function of the potential number of seedlings at a given location (based on local source trees and the potential con...

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: :به زراعی کشاورزی 0
مهدی رمضانی دانشجوی دکترا، گروه زراعت دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، عضو استعدادهای درخشان باشگاه پژوهشگران جوان و نخبگان، تهران، ایران رضا رضایی سوخت آبندانی دانشجوی دکترا، گروه زراعت دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، عضو استعدادهای درخشان باشگاه پژوهشگران جوان و نخبگان، تهران، ایران

to study the effects of priming on seed germination traits of sainfoin 'eski', a factorial in randomized complete block design with three replications was conducted at the laboratory of agricultural research center of sari in 2011. treatments consisted of polyethylene glycol (peg6000) at 5 and 10%, potassium nitrate (kno3) at 5 and 10% and potassium chloride (kcl) at 5 and 10% levels ...

Journal: :علوم گیاهان زراعی ایران 0
بابک ربیعی مهدی بیات

to evaluate the effects of accelerated aging and cold stress on seed germination and seedling growth indices in five oilseed rape cultivars (hyola330, hyola401, hyola420, syn3 and pr401/15e), an experiment was carried out in a completely randomized design of three replications. results indicated that the cultivars were significantly different in germination percentage, seed vigour, germination ...

Journal: :زراعت دیم ایران 0
مجید عبدلی دانشجوی دکتری دانشگاه مراغه عزت اله اسفندیاری دانشیار دانشگاه مراغه

due to extent of zinc (zn) deficiency in soils of iran and its deficiency in human diet, this study investigated the effect of zn sulfate foliar applications (non-foliar application, 0.5 g/l at stem elongation stage, 0.5 g/l at stem elongation and grain filling stages, 0.5 g/l at stem elongation and 2 g/l at grain filling stages) on yield and its components (farm sector) and influence of grain ...

Journal: :پژوهش های زراعی ایران 0
روشنک شهریاری محمد خواجه حسینی سید مجید هاشمی نیا

one of the main problems in the mass production of pepper transplant is the stickiness of seed coat to the cotyledony leaves that can lead to no emergence or having poor emergence of pepper seedlings. therefore, in order to evaluate the effects of different sowing depths and soil compactions on emergence and early seedlings growth of pepper, a greenhouse experiment was conducted in the faculty ...

2016
Wei Wang Scott B. Franklin Zhijun Lu Brian J. Rude

Gregarious flowering of bamboo species impacts ecosystem properties and conservation, but documentation of these periodic events is difficult. Here, we compare the characteristics of flowering sites and un-flowered patches of an arrow bamboo (Fargesia qinlingensis) in the Qinling Mountains, China, over a 5-year period (2003-2007) after a mast flowering event (2003). We examined flowering culm a...

To study effects of salicylic acid (SA) treatments (0, 0.5, 1 and 2 mM) in two forms of seed priming (for 24 h) and spraying on seedling at 4-6 leaf stage an experiment was conducted on periwinkle (Catharanthus roseus Don.) with and without exposure to a mild cold stress of 8 °C (for 32 h). Seeds were sown in trays containing peat-based substrate (with 20% sandy loam field soil). Transplants of...

Journal: :Revista Brasileira de Engenharia Agricola e Ambiental 2021

HIGHLIGHTS The seeds obtained from the fruit pulp industry have a physiological quality for seedling propagation. There is high potential reducing residues by using these Higher pixel density observed full with an efficiency of forming normal seedlings.

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