Papers by Nasser Abbaspour
Evaluation of morphophysiological characteristics of wheat genotypes in different foliar spraying treatments under normal conditions and salinity stress
Plant science today, Jun 28, 2024
Effects of vermicompost and nitrogen fertilizers on growth of Jimson weed (Datura stramonium L.) as a medicinal plant
International Journal of Medical Research and Health Sciences, 2016
An experiment was conducted in order to evaluate the effect of organic (3 and 6 ton/ha vermicompo... more An experiment was conducted in order to evaluate the effect of organic (3 and 6 ton/ha vermicompost) and chemical (150 and 300 kg/ha nitrogen) fertilizers on growth, seed dispersal and heteroblasty of jimson weed at green house of Shiraz University in 2012. The results showed that the highest and the lowest plant growth, seed production and seed dispersal was in 300 kg/ha N and 6 ton/ha vermicompost, respectively. Position of the seeds on maternal plant had an important influence on the emergence percentage. Seeds on the middle and lowest parts of the plants had less emergence percentage compared with those on the higher parts. In general, application of 300 kg/ha nitrogen accelerated the growth of jimson weed and increase dispersal and heteroblasty of the jimson seed.
Journal of Horticultural Science, Jun 1, 2017
Adaptation and defense responses are the consequences of exposure to drought stress in plants. Sa... more Adaptation and defense responses are the consequences of exposure to drought stress in plants. Salicylic acid (SA) as a natural signaling molecule poses a significant impacts on various aspects of plant growth and development. This study investigates the effects of SA on carotenoids content, lipid peroxidation rate and antioxidant enzymes activities. A pot experiment was conducted using a factorial pattern based on a randomized complete block design with three replications under greenhouse conditions. The variables in the experiment included grapevine cultivars ('Rasheh' and 'Bidane Sefid'), irrigation periods (5, 10 and 15 day intervals) and SA concentrations (0, 1 and 2 mM). Results showed that with increasing the drought stress levels, increase in carotenoids, malondialdehyde (MDA) contents, catalase (CAT), ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) enzymes activities were detected. Carotenoids content, catalase (CAT) and ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) enzymes activities were higher in the Rasheh cultivar compared with the 'Bidane Sefid' cultivar. Carotenoids content, CAT, APX and GPX enzymes activities increased by application of salicylic acid.. According to the obtained results, the Rasha cultivar showed a greater tolerance to water stress in comparison with Bidane Sefid cultivar, suggesting that SA is capable of inducing drought stress tolerance in plants.
The Kanibarazan Wetland located in West Azarbaijan province is one of the wetlands of the Ramsar ... more The Kanibarazan Wetland located in West Azarbaijan province is one of the wetlands of the Ramsar International Convention with 907 hectares. This Hunt-Banned region has semidry to mid semidry climate. The plants in the studied area were regularly collected every month during growing seasons 2013 from two habitats aquatic and nearby wetland habitats. Then plants were deposited in the herbarium of Kharazmi university (FAR), Tehran. A total of 118 different plant species collected in this study belong to 42 families (2 bryophyte, 33 dicotyledone, 1 ceratophyllaceae, 6 monocotyledon) and 99 genera. Among these families represented in the area, 17 families (11 dicotyledone, 1 ceratophyllaceae, 5 monocotyledon) including 32 genera and 35 species are belonged to aquatic wetland habitat and 25 families (2 bryophyte, 22 dicotyledone, 1 monocotyledon) including 67 genera and 83 species are belonged to nearby wetland habitat. Classification based on life form indicates that the therophytes with 62% abundance in nearby wetland habitat and 35% in aquatic habitat comprise the largest proportion of the plants in the studied area. The most extended chorotype is related to Iran-Turanian region (50% in nearby wetland habitat and 38% in aquatic habitat).
Journal of Horticulture and Postharvest Research, Jun 1, 2020
Soil salinity is a prevalent abiotic stress that adversely affects crop productivity worldwide. S... more Soil salinity is a prevalent abiotic stress that adversely affects crop productivity worldwide. Salinity is an environmental stress that limits growth and development in fruits and vegetables due to increasing osmotic pressure, imbalancing of nutrients and toxicity of some special ions. Tomato (Lycopersicon esculentum) is one of the most important fruits and vegetables. Research method: In this study, effect of salt stress (NaCl) on eight cultivars of tomato (king stone, Caligen, Super Strain B, Primo Early, Early Urbana VF, Early Urbana 111, Cal-j-N3 and Peto Early CH) were investigated. Plants were cultured in hydroponic conditions with five treatments of NaCl including 0, 30, 60, 90 and 120 mM. Each test has repeated three times. The growth indices, Ions, chlorophyll, soluble sugar and proline contents, were measured in roots, stems, petioles and leaves. Main findings: The results showed that, sodium and chloride contents increased in all parts of the cultivars with increasing NaCl concentration. However nitrate and potassium contents decreased. Proline and soluble sugars contents increased in leaves under salt stress too. In Primo-Early, Early Urbana 111, Cal-j-N3 and Petoearly CH, soluble sugar content increased with increasing NaCl concentration up to 90 mM. In all varieties, high salinity reduced chlorophyll a and b, total chlorophyll, carotenoids contents and growth indices. As far as the measured factors are concerned, it seems that Early Urbana VF and Super Strain B showed a high capacity to tolerate salinity stress. Limitations: No limitations were founded. Originality/Value: This is an opportunity to identify salinity-tolerant tomato cultivars that play an important role in the cultivation and production of quality crops.
Effect of fertilizer application and irrigation on germination of Jimson weed (Datura stramonium L.) as a medicinal plant
International Journal of Medical Research and Health Sciences, 2016
An experiment was conducted in order to evaluate the effect of 3 and 6 ton/ha vermicompost and 15... more An experiment was conducted in order to evaluate the effect of 3 and 6 ton/ha vermicompost and 150 and 300 kg/ha nitrogen on seed germination of Datura stramonium L. at Shiraz University in 2012. Nutrition of maternal plants with six tons per hectare vermicompost caused the highest seed dormancy and lowest germination rate and seed vigor. In contrast, the highest germination rate and seed vigor was obtained in the maternal plant nutrition with 300 kg per hectare nitrogen. Place the seeds on maternal plants had a significant effect on seeds germination. So that the middle and lower seeds on the maternal plant had less germination rate and seedling vigor than those in upper part of the plant. Six tons vermicompost per hectare decreased the emergence percentage in seeds of this weed through increasing of dormancy in produced seeds.
Journal of Plant Process and Function, Mar 10, 2018
Salinity is a main and common stress which decreases the amount of agriculture products and natur... more Salinity is a main and common stress which decreases the amount of agriculture products and natural plants in many areas of the world. In this study, the effect of salt stress on three varieties of Lotus corniculatus 'Karaj', 'Jolfa', and 'Ardabil' was investigated. Plants were cultured in hydroponic condition with four NaCl treatments (0, 50, 100, 150 mM). The amounts of proline, glycine betaine, soluble sugars as well as Na + and Clwere analyzed. The results showed that sodium and chloride content in all varieties significantly increased in shoot (p<0.05). The amounts of proline and soluble sugars significantly increased in all varieties (p<0.05). However, increasing in NaCl concentration raised significantly glycine betaine content in leaves of the varieties (p<0.05). As far as the measured factors are concerned, it seems that 'Jolfa' and 'Karaj' have a higher capacity to tolerate salt stress particularly in 100-150 mM NaCl compared with 'Ardabil'.
The International Journal of Plant, Animal and Environmental Sciences, 2014
In order to investigate the effects of treatment of Salicylic Acid on photosynthetic system of tw... more In order to investigate the effects of treatment of Salicylic Acid on photosynthetic system of two varieties of grapes (Vitisvinifera L. and Seedless White), under drought stress conditions, a factorial experiment was performed in terms of the scheme of totally random blocks. Watering cycles included intervals of 5, 10 and 15 days, and Salicylic Acid included concentrations of zero, 1 and 2 m. The results showed that by increasing drought stress, number parameters and leaf area, relative content of leaf water, transpiration, stomatal conductance, and pure photosynthesis had significant decrease in comparison to control treatment. And leaf thickness and stomata numbers increased significantly. Also the results revealed that the rate of leaf numbers, leaf thickness, stomata numbers, relative content of leaf water, pure photosynthesis and transpiration of Vitisvinifera L. was more than Seedless White. And the area of leaf and stomatal conductance in Seedless White grape was more than Vitisvinifera L. grape. Foliar application of Salicylic Acid resulted in increasing the number and the area of the leaf, leaf thickness, transpiration, stomatal conductance and pure photosynthesis. Generally, the results showed that Salicylic Acid can decrease drought deterrence stress effects on grape growth and VitisviniferaL. grape in comparison to Seedless white grape is more resistant to dryness.
Vitis: Journal of Grapevine Research, Apr 1, 2015
A hydroponic culture experiment was conducted to investigate the effects of different concentrati... more A hydroponic culture experiment was conducted to investigate the effects of different concentrations (0, 25, 50 and 100 mM) NaCl on own-rooted table grape (Vitis vinifera L.) cultivars (red 'Rishbaba', red 'Sahebi', 'Dastarchin' and red 'Sultana') under greenhouse conditions. Cultivars were evaluated for growth analysis leaf area, leaf water potential and the chlorophyll a, b and carotenoid contents in relation to proline and soluble sugars accumulation. Salinity treatments caused a growth reduction (P ≤ 0.05) in all the cultivars. Also leaf water potential and chlorophyll a, b contents decreased whereas carotenoid, proline and soluble sugars increased with increasing NaCl concentration. 'Dastarchin' and red 'Sultana' showed the salt-sensitivity, the highest loss of growth, leaf water potential and chlorophyll content and the lowest accumulation of carotenoids, proline and soluble sugars. Also salt stress significantly (P < 0.001) increased the rate of lipid peroxidation in the all cultivars particularly in 'Dastarchin' and red 'Sultana'. The increase in malondialdehyde content indicated that salinity induced oxidative stress. There was a significant negative correlation between leaf water potential and NaCl concentrations (r 2 :-0.781, p < 0.001). A positive correlation was also found between lamina proline contents and NaCl concentrations (r 2 : +0.964, p < 0.001) for all salinity treatments. Considering overall results red 'Rishbaba' and red 'Sahebi' showed higher capacity to tolerate salinity when compared to 'Dastarchin' and red 'Sultana'.
Vitis: Journal of Grapevine Research, Apr 1, 2015
The response of hydroponically grown four ownrooted table grape (Vitis vinifera L.) cultivars ('R... more The response of hydroponically grown four ownrooted table grape (Vitis vinifera L.) cultivars ('Red Rishbaba', 'Red Sahebi', 'Dastarchin' and 'Red Sultana') to different salt concentrations (0, 25, 50 and 100 mM NaCl) was studied under greenhouse condition. Growth parameters, total chlorophyll (a+b) and proline contents were determined in leaves and roots. Cl-, Na + , K + and NO 3 concentrations were measured in lamina, petiole, stem and root. Shoot growth, total dry weight, total leaf chlorophyll (a+b), NO 3-N and K + contents were significantly reduced (P≤0.05) under NaCl stress, whereas proline, Cland Na + accumulation increased significantly with increasing salinity. 'Red Rishbaba' and 'Red Sahebi' showed a less decrease in total leaf chlorophyll, K + and NO 3 contents, while proline accumulation in these cultivars was higher than that of 'Dastarchin' and 'Red Sultana'. Also, shoots of 'Red Sahebi' and 'Red Rishbaba' accumulated lower Cland Na + than other cultivars. In conclusion, the overall results showed that 'Red Rishbaba' and 'Red Sahebi' were more tolerant than 'Dastarchin' and 'Red Sultana'.
یافتههای نوین در علوم زیستی, Sep 1, 2017
A laboratory experiment was carried out to investigate the effect of salinity on some morphologic... more A laboratory experiment was carried out to investigate the effect of salinity on some morphological and physiological parameters in four Canola (Brassica napus L.) cultivars (Talaye, Sarigol, Zarfam and Opera) under salinity stress. Plants were grown in hydroponic solution (Hoagland 1/4 strength) under greenhouse conditions and on five-leaf stage, treated with different concentrations of NaCl: 0 (control), 50, 75 and 100 mM. After 14 days of treatment, plants were harvested and the length of shoots and roots, photosynthesis, chlorophylls and carotenoids contents of leaves were measured on four studied cultivars. In general the results showed that increasing salinity reduced leaf relative water content, shoot and root lengths and leaf area. Photosynthetic rate was declined in Talaye and Sarigol, but it was elevated in Opera and Zarfam. It should be noted that the changes induced by salinity on photosynthetic pigments was not regular. The results of this study showed that among the investigated cultivars, in vegetative phase, Opera and Zarfam had higher capacity and function to salt stress tolerate than other cultivars. It also seems that Sarigol may be more vulnerable than other cultivars under salinity stress.
Acta Physiologiae Plantarum, Dec 3, 2013
Grapevine is moderately sensitive to salinity and accumulation of toxic levels of Clin leaves is ... more Grapevine is moderately sensitive to salinity and accumulation of toxic levels of Clin leaves is the major reason for salt-induced symptoms. In this study, apoplastic Cluptake and transport mechanism(s) were investigated in two grapevine (Vitis sp.) rootstock hybrids differing in salt tolerance; 1103 Paulsen (salt tolerant) and K 51-40 (salt sensitive). Increased external salinity caused high Claccumulation in shoots of the salt sensitive K 51-40 in comparison to Paulsen. Measurement of 15 NO 3 net fluxes under high salinity showed that by increasing external Clconcentrations K 51-40 roots showed reduced NO 3 accumulation. This was associated with increased accumulation of Cl-. In comparison to Paulsen, K 51-40 showed reduced NO 3-/Clroot selectivity with increased salinity, but Paulsen had lower selectivity over the whole salinity range (0-45 mM). To examine if root hydraulic and permeability characterisations accounted for differences between varieties, the root pressure probe was used on excised roots. This showed that the osmotic Lp r was significantly smaller than hydrostatic Lp r , but no obvious difference was observed between the rootstocks. The reflection coefficient (r) values (0.48-0.59) were the same for both rootstocks, and root anatomical studies showed no obvious difference in apoplastic barriers of the main and lateral roots. Comparing the uptake of Clwith an apoplastic tracer, PTS (3-hydroxy-5,8,10-pyrentrisulphonic acid), showed that there was no correlation between Cland PTS transport. These results indicated that bypass flow of salts to the xylem is the same for both rootstocks (0.77 ± 0.2 and 1.05 ± 0.12 %) and hence pointed to differences in membrane transport to explain difference in Cltransport to the shoot.
Association Mapping of Salt Tolerance in Sunflower by Using SSR and Retrotransposon Markers
In order to understand the response of tobacco to salt stress, antioxidant enzyme activities, pla... more In order to understand the response of tobacco to salt stress, antioxidant enzyme activities, plant biomass and ion content were analyzed in two oriental tobacco genotypes (Basma 31 and SPT 406). Tobacco plants were exposed to 0, 50, 100, 150 and 200 mM NaCl for 12 days. The fresh and dry weight as well as shoot and root length of Basma 31 were greater than those of SPT 406 under increasing salt stress. On exposure to NaCl, SPT 406 showed a higher Na/K ratio than that of Basma 31. Activity of catalase, ascorbate peroxidase and guaiacol peroxidase enzymes increased with increasing NaCl content in leaves of two genotypes, but activities of three enzymes in leaves of Basma 31 were higher than SPT 406. Activities of catalase and ascorbate peroxidase in roots of Basma 31 and SPT 406 increased with increasing external NaCl concentration up to 150 and 100 mM, respectively. The highest guaiacol peroxidase activity in roots of Basma 31 and SPT 406 was observed in 100 and 50 mM NaCl, respectively. These studies established that Basma 31 was able to tolerate higher salinity in comparison with SPT 406. Our results suggested that catalase, guaiacol peroxidase and ascorbate peroxidase play a major role in estimating the salt stress tolerance of tobacco genotypes.
Phenylmercuric Acetate (Pma) as an Antitranspirant Induces Salt Tolerance in Barley and Bean Plants
Seed dormancy is a common phenomenon in many medicinal plants. In such plants, seed germination o... more Seed dormancy is a common phenomenon in many medicinal plants. In such plants, seed germination occurs under specific environmental signals or factors. In order to evaluate the effects of some treatments on seed dormancy and germination of Valeriana officinalis, two different growth media, water with agar and Murashige and Skoog (MS) medium, were used. The stages of breaking seed dormancy were incorporated with application of gibberellic acid (GA) in 400, 800 and 1600 part per million (ppm) concentrations for time 3 periods of 72, 144 and 216 h at 4°C; and sulfuric acid (H SO) (10 and 15%) for periods of 10, 15 and 20 min. 2 4 Seed germination significantly increased in high concentration of GA (800 ppm). The best result in H SO 3 2 4 treatments obtained at 10% concentration for 15 min. Also the percentage of germination and days to germination was higher and faster in water with agar medium than MS medium. In the present study, the obtained results suggested that the seeds of valeriana officinalis have exogenous and endogenous dormancy. GA and H SO pretreatments in the certain concentrations and time periods stimulated seed germination.
Vitis: Journal of Grapevine Research, Mar 27, 2015
Salicylic acid (SA) acts as an endogenous signal molecule, synchronizing plant responses under ab... more Salicylic acid (SA) acts as an endogenous signal molecule, synchronizing plant responses under abiotic stress and a component of tolerance in plants. The current study investigates the effects of SA on mineral nutrient concentrations in two grapevine (Vitis vinifera L.) cultivars, 'Qarah Shani' and 'Thompson Seedless' under NaCl stress. Grapevine rooted cuttings were planted in pots, containing a mixture of perlite and cocopeat (1:1 v/v) and placed in an open hydroponic system. Plants were exposed to five levels of salinity 0, 25, 50, 75 and 100 mM NaCl and four levels of SA 0, 100, 200 and 300 mg•L-1. Results indicated that foliar spray with SA improved nutrient uptake by grape roots. Plant's leaves and roots Na + and Clcontents increased significantly, and NO-3-N, K + , Na + , Ca 2+ , Mg 2+ , Zn 2+ , Fe 2+ and also K + /Na + selectivity ratios decreased in both cultivars in response to salt treatments. Application of SA significantly reduced Na + and Claccumulation in leaves and roots in both cultivars and it increased NO 3-N, K + , Ca 2+ , Mg 2+ , Zn 2+ and Fe 2+ contents under NaCl stress. Therefore, SA could mitigate the detrimental effects of salinity on accumulation of harmful ions and improve the absorption of essential and beneficial elements in grapevine under salinity.
Central European Journal of Biology, Sep 1, 2014
Enhanced production of valerenic acid in hairy root culture of Valeriana officinalis by elicitation
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Papers by Nasser Abbaspour