Acta Agriculturae Scandinavica Section B-soil and Plant Science, 2010
In order to study the effects of different root-zone temperature (RZT) and two Rhizobium legumino... more In order to study the effects of different root-zone temperature (RZT) and two Rhizobium leguminosarum strains (originating from cold area and temperate area) on some grasspea (Lathyrus sativus) landraces (Ardabil, Shahrekord, and Zanjan) of Iran, an experiment was conducted in a controlled-environment chamber. In this experiment, four root-zone temperatures (5, 10, 15, and 25°C) and a constant air temperature were
In this study, the effect of different alkaline concentrations (0, 10, 20, 30, 40, 50, 60 mM) on ... more In this study, the effect of different alkaline concentrations (0, 10, 20, 30, 40, 50, 60 mM) on germination and biochemical characteristics of the two sesame (Sesamum indicum L.) cultivares (Dashtestan and GL-13) which are registered cultivars of Iran were investigated. The experiment was carried out in a completely randomized design with three replications. Results showed that, germination percentage, germination rate, shoot length and dry weight, root length and dry weight and K+ content decreased, whereas, malondialdehyde (MDA), proline, total soluble sugars and Na+ contents increased with increasing alkalinity stress. GL-13 cultivar had the least root and shoot length, proline and K+ content than Dashtestan.
Safflower (Carthamus tinctorius L.) is an important oilseed crop, usually grown on a small scale ... more Safflower (Carthamus tinctorius L.) is an important oilseed crop, usually grown on a small scale and in salt-affected soils. Salinity stress can cause oxidative damage to plants. Upregulation of the antioxidant defense system induced by glycine betaine (GlyBet) alleviates the damaging effects of oxidative stress in plants. In the present investigation, seeds were treated with 0, 10, 30 and 60 mM of GlyBet solutions. Germination and the primary growth of the seedling were examined using sodium chloride salt (NaCl) at 0 (non-stress), 50, 100 and 150 mM concentrations. The obtained results indicate that at 50 and 100 mM NaCl, priming with 30 and 60 mM GlyBet increased root and shoot lengths compared to the control (0 mM). In addition, at all stress levels, priming with 60 mM GlyBet led to lower malondialdehyde, total soluble sugars and proline contents than in control seedlings. Priming with GlyBet increased catalase (CAT), superoxide dismutase (SOD) enzyme activities and protein conte...
A pot experiment was carried out to study the impacts of water stress upon physiological and bioc... more A pot experiment was carried out to study the impacts of water stress upon physiological and biochemical properties as well as seed yield and components yield of Alyssum homolocarpum. The factors taken into consideration included water stress (80%), the capacity of field (60%) as well as field capacity (40%) within three stages of growth, stem elongation, flowering and seed setting. While water stress happening three stages of growth culminated in a reduction of plant height, component yield and seed yield, an increase in superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) activity was observed. Water stress increased content of proline, soluble sugar and malondialdehyde (MDA). The content of calcium (Ca) and magnesium (Mg) decreased in 40% and 60% field capacity at stem elongation stage compared to control. With increasing water stress mucilage percentage increased. In 40% field capacity at elongation stage Alyssum did not have seed yield. In this stress level, at flowerin...
Acta Agriculturae Scandinavica Section B-soil and Plant Science, 2010
In order to study the effects of different root-zone temperature (RZT) and two Rhizobium legumino... more In order to study the effects of different root-zone temperature (RZT) and two Rhizobium leguminosarum strains (originating from cold area and temperate area) on some grasspea (Lathyrus sativus) landraces (Ardabil, Shahrekord, and Zanjan) of Iran, an experiment was conducted in a controlled-environment chamber. In this experiment, four root-zone temperatures (5, 10, 15, and 25°C) and a constant air temperature were
In this study, the effect of different alkaline concentrations (0, 10, 20, 30, 40, 50, 60 mM) on ... more In this study, the effect of different alkaline concentrations (0, 10, 20, 30, 40, 50, 60 mM) on germination and biochemical characteristics of the two sesame (Sesamum indicum L.) cultivares (Dashtestan and GL-13) which are registered cultivars of Iran were investigated. The experiment was carried out in a completely randomized design with three replications. Results showed that, germination percentage, germination rate, shoot length and dry weight, root length and dry weight and K+ content decreased, whereas, malondialdehyde (MDA), proline, total soluble sugars and Na+ contents increased with increasing alkalinity stress. GL-13 cultivar had the least root and shoot length, proline and K+ content than Dashtestan.
Safflower (Carthamus tinctorius L.) is an important oilseed crop, usually grown on a small scale ... more Safflower (Carthamus tinctorius L.) is an important oilseed crop, usually grown on a small scale and in salt-affected soils. Salinity stress can cause oxidative damage to plants. Upregulation of the antioxidant defense system induced by glycine betaine (GlyBet) alleviates the damaging effects of oxidative stress in plants. In the present investigation, seeds were treated with 0, 10, 30 and 60 mM of GlyBet solutions. Germination and the primary growth of the seedling were examined using sodium chloride salt (NaCl) at 0 (non-stress), 50, 100 and 150 mM concentrations. The obtained results indicate that at 50 and 100 mM NaCl, priming with 30 and 60 mM GlyBet increased root and shoot lengths compared to the control (0 mM). In addition, at all stress levels, priming with 60 mM GlyBet led to lower malondialdehyde, total soluble sugars and proline contents than in control seedlings. Priming with GlyBet increased catalase (CAT), superoxide dismutase (SOD) enzyme activities and protein conte...
A pot experiment was carried out to study the impacts of water stress upon physiological and bioc... more A pot experiment was carried out to study the impacts of water stress upon physiological and biochemical properties as well as seed yield and components yield of Alyssum homolocarpum. The factors taken into consideration included water stress (80%), the capacity of field (60%) as well as field capacity (40%) within three stages of growth, stem elongation, flowering and seed setting. While water stress happening three stages of growth culminated in a reduction of plant height, component yield and seed yield, an increase in superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) activity was observed. Water stress increased content of proline, soluble sugar and malondialdehyde (MDA). The content of calcium (Ca) and magnesium (Mg) decreased in 40% and 60% field capacity at stem elongation stage compared to control. With increasing water stress mucilage percentage increased. In 40% field capacity at elongation stage Alyssum did not have seed yield. In this stress level, at flowerin...
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