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جدیدترین مقالات

Applying Calcium Carbide Solution Affect Sex Expression and Increases Yield of Monoicous Cucumber

Sex expression in cucumber is influenced by hormonal and environmental factors such as day length and temperature. Increasing female flowers that will develop to fruit is a trick for increasing yield, hence it’s importance. Likewise, it would help breeders through hybridizing process. Ethylene as a plant hormone is known to increase female flowers of most members of Cucurbitaceae family but as ...

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Antioxidative Responses of Eucalyptus camaldulensis to Different Concentrations of Copper

Anthropogenic activities have caused important increases in soil Cu levels not only in urban areas but also in croplands. This study was designed to find out the effect of different concentration of copper on physiological and biochemical changes in Eucalyptus camaldulensis seedlings. Seeds of Eucalyptus camaldulensis were grown in marble chips and irrigated with nutrient solution mixed with co...

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Efficiency of Folic Acid in Improving Yield and Fruit Quality of Strawberry

In this research the effect of application of different levels of folic acid and time on some quality and agronomic characteristics of strawberry (cultivar Paros) was investigated. The plants were treated by folic acid with concentrations of 0, 20 and 40 mM at two stages (30 days after planting and first blooming) as a factorial experiment using a randomized complete block design with four repl...

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Effects of Priming with Salicylic Acid on Safflower Seedlings Photosynthesis and Related Physiological Parameters

Generally, primed seeds produce larger and heavier plants than non-primed seeds. This may be simply due to rapid emergence and extension of leaf growth, or the influence of other physiological processes. The effect of seed pretreatment with salicylic acid (SA) on some physiological and photosynthetic characteristics of the safflower seedlings, cv. Goldasht, was examined under field condition. T...

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Biochemical and Physiological Responses of Alfalfa (Medicago sativa L.) Cultivars to Osmotic Stress

In order to investigate the effects of water stress on total phenolics content, antioxidant power, β-glucosidase activity and stomatal properties of alfalfa, a factorial experiment based on randomized complete block design was carried out in 1-Lit pots containing half strength Hoagland culture medium using two cultivars of alfalfa at four osmotic pressures including 0 (control), -0.5, -1.0 and ...

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Stomatal Density as a Selection Criterion for Developing Tea Varieties with High Physiological Efficiency

Stomata, the small opening in leaf connecting plant with atmosphere, play pivotal roles in global water and carbon cycles. Stomata regulate the two key important physiological functions viz. photosynthesis and transpiration and thus are crucial for performance of crop species in changing climatic conditions. Although environmental factors influence the density and size of stomata, the genetic c...

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A Study on the Feasibility of Replacing Silver Nitrate with Natural Compounds in Preservative Solution of Gerbera jamesonii Cut Flowers

Gerbera(Gerbera jamesonii) from the family of Asteraceae is regarded as one of the best cut flowers in the world. Despite of the publicity of Gerbera’s cut flowers, they have a short postharvest life. The objective of the present study was to study the replacement feasibility and the comparison of thymol (isolated from zataria), and essential oils of peppermint and rosemary (200, 400 and 600 mg...

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Effect of Arbuscular Mycorrhiza on Growth and Physiological Behavior of PHL-C Rootstock

PHL-C is one of the dwarf sweet cherry rootstocks which is a hybrid between P. avium L. × P. cerasus L. Direct rooting of sweet cherry rootstocks is difficult which can be solved by using in vitro propagation. Transfer of plantlets from in vitro to ex vitro limit the use of micro propagation, because of weak root systems and low survival rates. This study was conducted in order to select the be...

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Drought and Salinity Impacts on Bread Wheat in a Hydroponic Culture: A Physiological Comparison

Drought and salinity are two major abiotic stresses, similarly and/or differently affecting physiological processes of wheat. The aim of this study was to evaluate and compare the impacts of drought and salinity on wheat. A pot experiment was conducted as completely randomized design with three replications in the research greenhouse of Yasouj University in 2015. Treatments included different l...

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Trichoderma-Induced Enhancement of Soybean Seedling Performance in Response to Salt Stress

In this experiment soybean seeds were pre-treated with salt tolerant isolate of Trichoderma harzianum to evaluate the different aspects of seedling growth and metabolism in response to different concentrations of NaCl. Trichoderma isolate was more effective in improving dry weight and root volume of seedlings during mild salt stress. Seedlings obtained from bioprimed seeds had significantly hig...

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Physio-biochemical and Enzymatic Responses of Sunflower to Drought Stress

Drought stress is a serious adverse factor that limits sunflower growth and productivity. The stress induces a range of physiological and biochemical responses in sunflower. So, evaluation of defense systems is important for producing resistant cultivars. In this study, physio-biochemical changes and antioxidant enzymes activitiesof six sunflower lines were evaluated under normal and irrigation...

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Study of phytohormones effects on UV-B stress seeds of thyme species

Background & Aim: Thymus vulgaris L. and Thymus daenensis Celak (Thyme), members of the family Lamiaceae, are widely used in Iranian folk medicine. The aim of this research was to study how salicylic acid (SA), gibberellin (GA), and indole acetic acid (IAA)-seed priming affect UV-B radiation in seeds of Thyme (T. vulgaris, T. daenensis </...

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Study of phytohormones effects on UV-B stress seeds of thyme species

Background & Aim: Thymus vulgaris L. and Thymus daenensis Celak (Thyme), members of the family Lamiaceae, are widely used in Iranian folk medicine. The aim of this research was to study how salicylic acid (SA), gibberellin (GA), and indole acetic acid (IAA)-seed priming affect UV-B radiation in seeds of Thyme (T. vulgaris, T. daenensis </...

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