Hamid Reza Darafshi; Seyyed Mohammad Javad Arvin; Fatemeh Nejad-Alimoradi
Abstract
Salicylic acid (SA) plays a crucial role in regulating various physiological mechanisms, including; germination, growth, flowering and fruit ripening. Here, the impact of seed priming of tomato (Tina) with SA on indicators of seed germination, seedling growth and quantitative and qualitative characteristics ...
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Salicylic acid (SA) plays a crucial role in regulating various physiological mechanisms, including; germination, growth, flowering and fruit ripening. Here, the impact of seed priming of tomato (Tina) with SA on indicators of seed germination, seedling growth and quantitative and qualitative characteristics of the fruit was examined under field conditions. The treatments included seed priming in SA solution with zero, 0.10, 0.25 and 0.50 mM for a duration of 24 h. Then, the early seedlings obtained from SA priming (0.25 and 0.50 mM) were grown in the greenhouse and transferred to the field. The results showed that SA led to the significant increase in seed germination properties, also an increase in all the traits of the seedlings, the effect of 0.50 mM was more significant, so that compared to the control, this concentration increased the seed germination percentage and speed (16% and 28 % respectively) and the dry weight of seedling shoot (124%). Moreover, SA contributed to the enhancement of measured field traits and the qualitative of fruit extract, such as carotenoid, ascorbic acid levels, acidity and total soluble solids, and for all traits, except for the number and weight of fruit per plant, no difference was observed between the two concentrations of SA. The highest number and weight of fruit was obtained from the 0.50 mM treatment and the fruit yield increased by 75% compared to the control. Overall, due to the small consumption of chemicals and the ease of used, SA priming will help to reduce production costs.
Nasrin Teimoori; Mohsen Saeidi; Mahmood Khoramivafa; Shahab Khoshkhoi
Abstract
The utilization of nanoparticles for seed priming may enhance the germination and seedling growth compared to bulk forms. Therefore, this research aims to investigate the effect of seed priming (with bulk iron oxide, nanoparticles of 1-100 nm and 40-60 nm in concentrations of zero, 2, 4, and 8 g l-1, ...
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The utilization of nanoparticles for seed priming may enhance the germination and seedling growth compared to bulk forms. Therefore, this research aims to investigate the effect of seed priming (with bulk iron oxide, nanoparticles of 1-100 nm and 40-60 nm in concentrations of zero, 2, 4, and 8 g l-1, water, and no priming) at different levels of drought stress (including no stress, -2, -4 and -8 bar) using polyethylene glycol 6000 on the characteristics of germination and growth of Adel chickpea cultivar. This research was performed as a factorial experiment based on a completely randomized design in three replications at Razi University. The results showed that germination ceased completely under drought stress of -8 bar. Drought stress at -4 bar after -8 bar resulted in a significant decrease in the percentage, speed, and vigor of germination by 96, 93, and 40%, respectively, and 130% increase in root length/shoot length ratio compared to the non-drought stress treatment. Seed priming treatments had the most positive and significant effect on the speed and vigor of germination in non-drought stress treatment and on the germination percentage in drought stress treatment. The seed priming with iron 8 g l-1 and 40-60 nm produced the highest length and weight vigor of germination. It appears that the priming treatments have resulted in better vigor and rate of germination in non-drought stress condition while germination percentage in drought stress. The seed priming treatment using iron 40-60 nm is the most effective compared to other priming treatments.
Behrooz Salehi-Eskandari; Farzaneh Aslani
Abstract
Echinophora platyloba is an aromatic perennial plant belonging to the family Apiaceae which is used as food seasoning and persevering in Iran and the shoots have medicinal properties. This study aimed to investigate treatments of moist chilling (0,30, 45, 70 and 90 days), gibberellic acid (GA3; 0, 500, ...
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Echinophora platyloba is an aromatic perennial plant belonging to the family Apiaceae which is used as food seasoning and persevering in Iran and the shoots have medicinal properties. This study aimed to investigate treatments of moist chilling (0,30, 45, 70 and 90 days), gibberellic acid (GA3; 0, 500, 1000 and 2000 mg/L) and scarification alone or a combination of these treatments for breaking seed dormancy of E. platyloba. The dormancy of the seeds was broken only after 90 days of moist chilling. Pretreatment GA only at the highest level (2000 mg/L) could induce seed germination (GP; 33%), the highest GP (50%) and germination index (GR; 3 seeds per day) was recorded in moist chilling treatment 45 days with GA3 treatment of 1000 mg/L. The lowest of GR was related to moist chilling treatment for 90 days and moist chilling treatment for 30 and 70 days with GA3 treatments of 500 and 2000 mg/L. The scarification treatment alone or combined with other treatments does not affect germination parameters.
Haniyeh Saadat; Mohammad Sedghi
Abstract
In order to investigate the effect of hydropriming and hormone priming on some physiological and biochemical characteristics in chickpea under salinity stress a factorial experiment was conducted based on completely randomized design at the University of Mohaghegh Ardabili in 2023 with 3 replications. ...
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In order to investigate the effect of hydropriming and hormone priming on some physiological and biochemical characteristics in chickpea under salinity stress a factorial experiment was conducted based on completely randomized design at the University of Mohaghegh Ardabili in 2023 with 3 replications. treatments included four salinity levels (0, 50, 75 and 100 mM) and four levels of priming (control, hydropriming, priming with gibberellin (50 ppm) and salicylic acid (100 ppm)). The results showed that salinity stress reduced germination percentage (GP), germination rate (GR), radicle and Seedling length (RL and SL) But, seed priming improved these traits. Salinity increased the allometric coefficient (AC), So that the highest was observed at (0.860) salinity of 100 Mm. The highest mean daily germination (MDG), plumule length (PL) and total seed protein content were observed in priming with gibberellin and control (without salinity). The maximum DGS (0.144) and MDA (0.0137 mmol/g FW) were related to the treatment with without priming and salinity of 100 mM. The amount of soluble sugars in gibberellin treatment and salinity of 100 mM compared to the control showed an increase about 56%. Also, the use of gibberellin increased amount of proline by about 40% compared to the control (without priming). In general, seed hydropriming, salicylic acid, especially gibberellin
Reza Rezvani; Behnam Kamkar; Zeinab Jabbari Badkhor
Abstract
To mitigate the detrimental effects of salinity stress on vegetable crops, various approaches, including the applying of organic inputs during different growth stages, such as germination, are employed. This study, conducted in 2023, aimed to assess the influence of humic acid pretreatment on the germination ...
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To mitigate the detrimental effects of salinity stress on vegetable crops, various approaches, including the applying of organic inputs during different growth stages, such as germination, are employed. This study, conducted in 2023, aimed to assess the influence of humic acid pretreatment on the germination characteristics and growth parameters of cucumber (Cucumis sativus) under salt stress. Two experiments, one in the laboratory and the other in a greenhouse, were carried out using a factorial design based on a completely randomized design with three replications. The experimental factors included humic acid priming at four concentrations (0, 50, 100, and 200 mg/l-1) and salinity at five levels (0, 25, 50, 100, and 150 mM NaCl). Results indicated that humic acid exerted a positive impact on various germination and growth attributes of cucumber, including germination percentage, germination rate, seedling length, dry weight, vigor index, and chlorophyll a, b, and carotenoid under salt-stressed conditions compared to the control. The treatment with 200 mmol/l humic acid and no salt exhibited the highest germination rate (87%) and seedling length (12.66 cm). The interaction between salinity and humic acid revealed that humic acid concentrations exceeding 100 mg/l-1 could alleviate the adverse effects of salinity stress on total chlorophyll. In conclusion, the cost-effective and easily applicable method of priming cucumber seeds with humic acid presents a potential strategy to mitigate the impacts of salinity stress in regions with saline water or soil.
Akram Rostamipour; Reza Tavakkol Afshari; Hamidreza Khazaie; Danial Kahrizi; Hamid Reza Eisvand
Abstract
Camelina, an oilseed plant in the Brassicaceae family, is extensively utilized in the food and pharmaceutical industries. This study aimed to investigate the effects of micronutrient foliar application on the growth and yield traits of two camelina genotypes (Soheil cultivar and Line-69) during the periods ...
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Camelina, an oilseed plant in the Brassicaceae family, is extensively utilized in the food and pharmaceutical industries. This study aimed to investigate the effects of micronutrient foliar application on the growth and yield traits of two camelina genotypes (Soheil cultivar and Line-69) during the periods 1400-1401 and 1401-1402 at the Agriculture Research Station of Ferdowsi University of Mashhad,, Iran. The experiment was conducted as a factorial design based on a completely randomized block with three replication, considering line and cultivar. The applied treatments included foliar application of iron sulfate, zinc sulfate, manganese sulfate, a mixture of micronutrients (iron sulfate, zinc sulfate, manganese sulfate), distilled water, and a control. These treatments were applied at two stages: 50% flowering and 50% pod formation. The experiment was conducted as a factorial design based on a completely randomized block with three replication, considering line and cultivar. The results of mean comparison revealed that, over two cropping years, the highest 1000-grain weight (1.20 grams) was attained in the Soheil cultivar during the 50% flowering stage in the first crop year, following the application of manganese sulfate via foliar application. The highest number of pods per plant (214 pods) was also observed in the Soheil cultivar during the 50% flowering stage, achieved through foliar application of iron sulfate in the second crop year. Under the influence of cultivar, the highest seed yield per hectare was obtained in the Soheil cultivar (1930 kg/hectare).
Elahe Nikoee; Maryam Mollashahi; Alireza Moshki; Homan Ravanbaksh
Abstract
Due to the fact that Elaeagnus angustifolia seed has a hard shell, the present study was conducted to investigate the types of appropriate treatments for germination of Elaeagnus angustifolia seed. The experiment was done in Semnan. Seed scarification performed in a completely randomized design with ...
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Due to the fact that Elaeagnus angustifolia seed has a hard shell, the present study was conducted to investigate the types of appropriate treatments for germination of Elaeagnus angustifolia seed. The experiment was done in Semnan. Seed scarification performed in a completely randomized design with three replications (12 seed per replication). Experimental treatments to break dormancy of Elaeagnus angustifolia seed included control, 60% sodium hydroxide for 20 and 30 minutes, 98% sulfuric acid for 20 and 30 minutes, 1% oxygenated water for 10 and 20 minutes, physical scraping, 90°C boiling water for 15 minutes and ice water(5 days at a temperature of zero degrees and then 24 hours at a temperature of 25 degrees for 3 days). The results showed that there was a significant difference at the level of 1 % between the germination treatments of Elaeagnus angustifolia seed including of germination percent, germination rate, and mean time of germination seed vitality index, and seed vegetative traits such as root length, stem length, number of leaflets and seed germination indices. The highest germination percentage was 88.67% in 98% sulfuric acid treatment for 20 minutes. Also, the highest seed vigor index (96%), mean root length(48 mm), mean stem length(60 mm) and average number of leaflets (5.7 number) were observed in this treatment. Totally, the results showed that in all parameters examined that Sulfuric acid treatment of 98% for 20 years obtained the highest values, but two treatments of ice water and boiling water prevented the germination of Oleaster seeds.
Bita Oskouei; Leila Sadeghi; Kobra Moslemkhani; Hadis Afshar; Zahra Radmanesh
Abstract
Genetic purity, as one of the important characteristics of the quality of seed lots, has been considered in the national standards of certified seed producing countries to achieve desirable and stable characteristics of agricultural cultivars. According to the national standard, determining the other ...
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Genetic purity, as one of the important characteristics of the quality of seed lots, has been considered in the national standards of certified seed producing countries to achieve desirable and stable characteristics of agricultural cultivars. According to the national standard, determining the other speciese in the seed sample is considered as one of the important tests of seed quality. This feature is checked with an emphasis on recognizable characteristics in the seed analysis laboratory. The research has investigated the characteristics and differences in appearance and genetics of seeds off- type of chickpea seeds. The results showed that the seeds that were considered as off- type morphologically differed from the control in at least one of the measured traits. These seeds were different from the original seed in terms of color, shape seed surface roughness and seed groove, also the selected indices were similar in the first and second generation seeds. The results of the molecular test also confirmed the results of the morphological investigations. In Adel, Mansour, Arman cultivars, the samples that in morphological studies were considered as off-type, in molecular studies using microsatellite markers H3F09, H3C11 and H1A06 showed that the molecular profile was not uniform and allele diversity was greater than the main allele of cultivars. In the process of seed certification program, microsatellite markers are a suitable and complementary tool to the use of morphological markers to determine the genetic purity of chickpea seed samples.