Bahare Kashefi; Mohadese Ghods; Mohamad Mogadam
Abstract
To study the interaction effect of the salinity and salicylic acid on some morphological and physiological traits in clary sage (Salvia sclarea), a pot experiment was conducted as factorial based on a completely randomized design with three levels of NaCl and control (zero, 50, 100 and 150 mM), as the ...
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To study the interaction effect of the salinity and salicylic acid on some morphological and physiological traits in clary sage (Salvia sclarea), a pot experiment was conducted as factorial based on a completely randomized design with three levels of NaCl and control (zero, 50, 100 and 150 mM), as the first factor and three levels of spraying the solution of salicylic acid and control (zero, 100, 200 and 300 mg/L), as the second factor with three replications in the greenhouse of Semnan Jihad-e-Agriculture Education center in 2013.The results of data variance analysis showed that the interaction of the salinity stress and salicylic acid levels were significant in other traits except the leaf length fresh weight and the rate of carotenoids. The maximum effect was seen at the salinity level of 50 and 100 mM and salicylic acid application at 200 mg/l. The results of this study indicated that leaf area and number, petiole length, leaf length and width, leaf fresh and dry weight, root length, chlorophylls concentration were influenced by the salinity levels in this plant. Somehow, their rates were decreased by increasing the salinity level, whereas the rates of soluble sugar, proline and carotenoid were increased. The application of salicylic acid showed a reducing effect in all traits.
Ali Akbar Ghasemi; Hassan Hamidi; Jaber Arves; Ali Masomi
Abstract
In order to study the effects of salinity stress (made by sodium chloride and calcium chloride) andtemperature interaction on germination characteristics of hyssopus officinalis, an experiment was conducton factorial basis and in a completely randomized design with three replication at laboratory of ...
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In order to study the effects of salinity stress (made by sodium chloride and calcium chloride) andtemperature interaction on germination characteristics of hyssopus officinalis, an experiment was conducton factorial basis and in a completely randomized design with three replication at laboratory of KhorasanRazavi Agriclultural and Natural Resource Research Center in 2010. In this experiment, different osmoticpotentials (0, -3, -6 and -9 bar) and also different temperatures (20, 25, 30 and 35 centigrade degree) wereused. In this research, the percentage and rate of germination, the length of radicle and plumule, lengthratio of radicle and plumule and seed vigor characteristics has been measured. The results showed a verysignificant effect of salt levels, osmotic potential and temperature on the above characteristics. The meancomparison for percentage and rate of germination characteristics showed that calcium chloride with 63%and 7.11 respectively had a significant difference with sodium chloride with 50% and 1.70. The highestpercent and rate of germination were seen in -3 bar osmotic potential made by calcium chloride in 25centigrade degree. The highest length of radicle and vigor was in -3 bar osmotic potential made bycalcium chloride in 20 centigrade degree. The highest length of plumule was seen in both sodium chlorideand calcium chloride in 0 bar (control) osmotic potential and 30 centigrade degree. Generally while theosmotic potential increases and temperature goes up to 30 centigrade degree all the characteristics insodium chloride and calcium chloride had a remarkable reduction. Also increment of high temperatureshad more harmful effects in NaCl than CaCl2. Study the Hyssop plant response to different levels ofsalinity and temperature on germination stage, it will assist farmers in establishment and desirableproduction.
Masoumeh Pouresmael; Jalal Rastegar; Mehdi Zangiabadi
Abstract
In this study, salinity tolerance of 51 Kabuli chickpea genotypes was investigated at vegetative growth phase using 4.5 and 6.5 ds/m salt solution (by adding NaCl to 1/2 Hoagland solution) and 1/2 Hoagland solution (EC= 1.7 ds/m) as control treatment. A split plot design was used in this experiment where ...
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In this study, salinity tolerance of 51 Kabuli chickpea genotypes was investigated at vegetative growth phase using 4.5 and 6.5 ds/m salt solution (by adding NaCl to 1/2 Hoagland solution) and 1/2 Hoagland solution (EC= 1.7 ds/m) as control treatment. A split plot design was used in this experiment where the main plot was salinity treatments and the sub plot was genotypes. Treatments continued until 40 days and after that, shoot length, leaf area, chlorophyll content and biomass ratio were measured. Genotypes responded differently to saline condition. Based on vegetative biomass production under salt treatments in comparison with control treatment, different salinity tolerance indices calculated. Ranking of genotypes based on these indices indicated that, the genotypes number 5620, 6364, 5941, 5280, 6142, 6356, 5843 and Hashem cultivar were more tolerant to salinity. Under 6.5 ds/m NaCl, genotype 6142 was the most tolerant genotype. Sowing the genotypes at saline soil generally affected by Na+ and Cl- with electrical conductivity of 9.8 ds/m at Neishabur (Feiz abad) field caused strong damages on all the genotypes and 60 days after planting none of the genotypes could survive at saline field. High salinity level in the field in comparison with salinity tolerance threshold of the chickpea genotypes might be the reason for this reaction