نتایج جستجو برای: low temperature stress
تعداد نتایج: 1939754 فیلتر نتایج به سال:
Abstract In order to assessment of the relation among low temperature with (Fv/Fm, leaf chloropyll and caratenoied contents) of clover spp, an experiment was arranged as split plot in RCBD with four replications include plant date as main plot ( 15 and 29 Sep.) and clover spp as sub plot ( Persian spp with 7 cultivars, Berseem , Red and Crimson clover with 1 cultivar) at Seed and Plant Impro...
In this project, we developed a low temperature (≤450C) silicon-germanium (SiGe) process using the Thermcopoly1/2 furnaces at SNF. Low stress (≤100MPa) poly SiGe has been successfully demonstrated with a deposition temperature below 450C and desired Si to Ge content ratio. Our SiGe deposition process is CMOS compatible and can enable a number of applications for microelectromechanical systems (...
In order to investigate the effects of seed priming by plant growth regulators( salicylic acid, spermine and spermidine) on some physiological and biochemical characteristics of Okra (Abelmoschus esculentus CV Basenti) under low temperature stress a completely randomized design was conducted at 2014. Experimental treatments include priming of okra seeds with 0.1 mM concentration of Salicylic Ac...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
To evaluate the commercial and local cucumber rootstocks in grafting conditions at different nitrogen (N) levels and temperatures of the rootzone, this research was conducted for a year in the Research Greenhouse of the Department of Horticulture, College of Agriculture, Isfahan University of Technology in 2014. The research was a factorial experiment based on completely randomized design with ...
to study of some cryoprotectives in cold tolerant rice genotypes (irctn33 and irctn34) and cold-sensitive rice genotype (hoveize) were selected in previous experiment, fourteen-day rice seedlings exposed fourteen days in 13/15oc (respectively night-day) temperatures as the stress treatment and 22/28oc (night-day) temperature as control treatment in phytotrone. this experiment was conducted in f...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Cold stress has always been a significant limitation for plant development and causes substantial decreases in crop yield. Some temperate plants, such as Arabidopsis, have the ability to carry out internal adjustment, which maintains checks metabolic machinery during cold temperatures. This acclimation process requires prior exposure low, chilling temperatures prevent damage subsequent freezing...
productivity of an oil well is an important parameter in any oil field development. low production rate of the wells, impose more production wells drilling which directly jeopardizes the economical feasibility of the project. oil production rate in some of the wells is very low due to low permeability of the reservoir rock. several practice like hydraulic fracturing and acid fracturing is very ...
Selenium (Se) is an important microelement for plants and has been shown to improve growth under normal and stressed conditions. In this study, effect of Se and nano-selenium (N-Se) on hydroponically-grown tomato (Lycopersicum esculentum Mill. cv. ‘Halil’) on photosynthesis, antioxidant activity and total polyphenolic content was assessed. A factorial experiment with three temperatu...
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