Journal of Crops Improvement

Impact of Plant Growth-Promoting Rhizobacteria on Biochemical and Yield Traits of Two Durum Wheat Cultivars Under Rainfed and Supplementary Irrigation Conditions

Parvaneh Hataminia; Nosratollah Abbasi; Mohammad Javad Zarea

Volume 26, Issue 4 , January 2025, Pages 687-705

https://doi.org/10.22059/jci.2024.276687.2175

Abstract

Objective: Given the challenges of water scarcity and the need for sustainable agricultural practices, this study was conducted to evaluate the impact of plant growth-promoting bacteria on the physiological traits of durum wheat at the research farm of Ilam University during the 2016-2017 growing season. ... Read More Objective: Given the challenges of water scarcity and the need for sustainable agricultural practices, this study was conducted to evaluate the impact of plant growth-promoting bacteria on the physiological traits of durum wheat at the research farm of Ilam University during the 2016-2017 growing season. The experiment was carried out as a factorial based on a randomized complete block design with three replications.Methods: The factors comprised three levels of plant growth-promoting rhizobacteria (Azospirillum brasilense, Azotobacter chroococcum and non-inoculated), irrigation in two levels (supplementary irrigation and rainfed), and two durum wheat cultivars (Saji and Dehdasht).Results: Supplemental irrigation significantly increased chlorophyll b and total chlorophyll content by 13.47% and 15.45% compared to rainfed conditions, respectively. Azospirillum and Azotobacter increased carotenoid concentration by 27% and 18.66% compared to the control, respectively. Moreover, the carotenoid concentration in the Saji cultivar was 21.42% higher than in the Dehdasht cultivar. The lowest anthocyanin concentration was observed in both Saji and Dehdasht cultivars under irrigated conditions (0.0055 and 0.0042 mmol g-1 fresh weight, respectively) and without bacterial inoculation. The Dehdasht cultivar had the highest leaf area index (6) compared to the Saji cultivar. A 16.60% decrease in the relative water content of leaves was observed at the reproductive stage under rainfed conditions. Among the two cultivars, the Dehdasht cultivar had a higher relative water content (55.03%). The highest ion leakage was observed under rainfed conditions (85.99%). Azospirillum and Azotobacter bacteria reduced ion leakage by 19.47% and 17.80% compared to the control, respectively. Catalase activity increased under rainfed conditions. Catalase activity was 15% higher in the Dehdasht cultivar than in the Saji cultivar. Plant growth promoting bacteria increased leaf area index, total chlorophyll, chlorophyll a, chlorophyll b, and catalase activity. Seed inoculation with Azospirillum bacteria increased peroxidase activity, and among the two inoculated cultivars, the Dehdasht cultivar had higher enzyme activity (27.60 μmol g-1 fresh weight of leaf). The highest grain yield (2923 kg ha-1) of durum wheat cultivars was obtained under supplemental irrigation conditions and inoculation with plant growth promoting bacteria.Conclusion: The obtained results demonstrated the positive effect of growth promoting bacteria on common cultivars of the Ilam area under supplementary irrigation

Evaluation of Source and Sink Relationships in Spring Wheat Under End-of-Season Water Stress Condition

Javad Hasanpour; laleh dehghan; mansoureh khalatbari

Volume 26, Issue 4 , January 2025, Pages 707-725

https://doi.org/10.22059/jci.2024.342665.2707

Abstract

Objective: This study was carried out in order to evaluate the source and sink relationship in spring wheat and the limiting effect of each on grain yield under optimal and water stress conditions.Methods: The experiment was conducted as a split-plot layout in the form of a randomized complete block ... Read More

Canonical Correlation Analysis between Yield and Yield Components with Root Traits in Bread Wheat Genotypes under Conditions of Moisture Stress of the Flowering Stage in Greenhouse Environment

Behnam Tahmasebpour; Sodabeh Jahanbakhsh; Ali Reza Tarinejad; Hamid Mohammadi; Ali Ebadi

Volume 26, Issue 4 , January 2025, Pages 727-745

https://doi.org/10.22059/jci.2024.359433.2815

Abstract

Objective: This study aimed to investigate the relationships between traits and utilize these relationships to select high-yielding cultivars under normal irrigation and drought stress conditions at onset of the flowering stage.Methods: To investigate the relationships between yield traits and their ... Read More

Evaluation of the Relationship between the Growth and Yield of Kohdasht Wheat Variety under Dry and Irrigated Conditions with Atmospheric Parameters Under the Influence of Planting Date and Type of Nutrition in the Climatic Conditions of Khorramabad

Saeid Hemati; mashalah Daneshvar; Nasser Tahmasebipour; Omidali Akbarpour

Volume 26, Issue 4 , January 2025, Pages 747-768

https://doi.org/10.22059/jci.2024.366674.2857

Abstract

Objective: It is necessary to delineate the relationship between crop yield and climatic and nutritional parameters in order to predict crop production. The current research was designed with the aim of suitable fertilizer recommendation and carried out according to the climatic conditions of the Lorestan ... Read More Objective: It is necessary to delineate the relationship between crop yield and climatic and nutritional parameters in order to predict crop production. The current research was designed with the aim of suitable fertilizer recommendation and carried out according to the climatic conditions of the Lorestan area in two years, 2017-2018 and 2018-2019.Methods: The statistical model used was split-factorial plots in the form of a randomized complete block design with 3 replications. The main plot included: the type of planting (irrigated – Non- irrigated) and the sub plot included the date of planting (in three levels, October 25 (early), November 15 (optimum) and December 5 (late) for two type of cultivation and the type of nutrition (at two levels of biofertilizers: Nitroxin and NPK based on the soil test and integrated fertilization of chemical fertilizer + chemical NPK with Phosphorus biofertilizers).Results: Traits related to yield components, such as the number of spikes per square meter and the number of seeds per spike, were affected by the dual effects of planting date× type of cultivation and planting date × type of nutrition. The double effect of type of cultivation× type of nutrition was significant only for biological yield traits and the harvest index. The highest seed yield was observed under the conditions of irrigated cultivation, early planting date, and full chemical nutrition. This research demonstrated that employing a combination of NPK chemical treatment (at 50% of the soil test recommendation) and biofertilizers can effectively reduce the consumption of chemical fertilizers in both irrigated and rainfed agriculture for the Kohdasht variety of wheat. Additionally, implementing early planting dates alongside the use of biofertilizers can help address nutritional gaps, thereby enhancing growth and yield under conditions that involve a reduction in chemical fertilizer use for wheat crops.Conclusion: The results of the stepwise regression of the atmospheric parameters showed that there is a positive and significant regression relationship between the grain yield and the amount of GDD.

Effect of Seeding Rate on the Quantitative and Qualitative Performance of Forage in Intercropping Systems of Persian Clover (Trifolium resupinatum) and Crimson Clover (T. incarnatum)

Mohammad Zamanian; Farid Golzardi; Saeid Heydarzadeh; Behzad Alizadeh

Volume 26, Issue 4 , January 2025, Pages 769-786

https://doi.org/10.22059/jci.2024.370971.2872

Abstract

Objective: This study was conducted to investigate the possibility of increasing the clover forage yield and quality by changing the seeding rate in monoculture and intercropping systems of Persian clover and crimson clover. Methods: This research was conducted in a factorial arrangement using a randomized ... Read More Objective: This study was conducted to investigate the possibility of increasing the clover forage yield and quality by changing the seeding rate in monoculture and intercropping systems of Persian clover and crimson clover. Methods: This research was conducted in a factorial arrangement using a randomized complete block statistical design with three replications at the Seed and Plant Improvement Institute in Karaj, Iran, during the cropping seasons 2021-22 and 2022-23. Experimental treatments involved five cropping systems (Persian clover monoculture, crimson clover monoculture, and different intercropping systems of these two species: 25% Persian clover+ 75% crimson clover, 50% Persian clover+ 50% crimson clover, and 75% Persian clover+ 25% crimson clover). Two seeding rates, 20 and 25 kg ha-1, were also examined. The evaluated traits comprised dry forage yield, plant height, and ten characteristics related to the nutritional value of the forage. Results: The results showed that forage yield and quality of clover were significantly affected by cropping system and seeding rate. In general, monoculture systems and seeding rate of 25 kg ha-1 had higher quantitative yield, whereas intercropping systems and seeding rate of 20 kg ha-1 had higher forage quality. The highest dry forage yield was obtained in the monoculture cropping systems of crimson clover with seeding rates of 25 and 20 kg ha-1, and in the monoculture cropping system of Persian clover with a seeding rate of 25 kg ha-1, producing 4.24, 3.93, and 3.73 tons of dry matter per hectare, respectively. The intercropping system of 50% Persian clover+ 50% crimson clover significantly increased the relative feed value of forage compared to monoculture systems, and the seeding rate of 20 kg ha-1 with a feed value of 162% improved the superiority of this cropping system. Monoculture of crimson clover at both seeding rates and monoculture of Persian clover at the seeding rate of 25 kg ha-1 were in the superior statistical group in terms of total dry forage yield.Conclusion: Monoculture of crimson clover with a seeding rate of 25 kg ha-1 had higher quantitative yield, whereas intercropping of 50% Persian clover+ 50% crimson clover with a seeding rate of 20 kg ha-1 had higher forage quality. In the current conditions where forage quality plays no role in determining its purchase price, monoculture of crimson clover would be more profitable for farmers. However, intercropping of 50% Persian clover+ 50% crimson clover could be beneficial for farmer-livestock producers in enhancing dairy production.

Enhancing the Yield and Technological Traits of Sugar Beet Through Seed Hydropriming and Foliar Application of Humic Acid in Late Planting Conditions

Ali Sarkhosh; Mohammad Ali Aboutalebian; Hamed Mansouri

Volume 26, Issue 4 , January 2025, Pages 787-804

https://doi.org/10.22059/jci.2024.373763.2876

Abstract

Objective: Considering that sugar beet planting can be delayed by factors such as excessive rainfall or the prioritization of water allocation to other crops early in the growing season, this field study evaluated the potential to mitigate the negative impacts of delayed planting on the yield and key ... Read More Objective: Considering that sugar beet planting can be delayed by factors such as excessive rainfall or the prioritization of water allocation to other crops early in the growing season, this field study evaluated the potential to mitigate the negative impacts of delayed planting on the yield and key technological traits of sugar beet by employing seed hydropriming and foliar application of humic acid.Methods: This research was conducted in the cropping year 2021 in Asadabad, using a randomized complete block design with three replications in the form of a split-plot factorial arrangement. The planting dates of March 25th, April 8th, 22nd, and May 6th, were assigned to the main plots, and seed priming (hydropriming and non-primed) and foliar application of humic acid (water spray and six g.L-1 of humic acid) were arranged in a factorial design within the sub-plots. For the hydropriming treatment, seeds were soaked in water at 22 °C for 28 hours and then sown after returning to their initial moisture content.Results: The combination of seed hydropriming and foliar application of humic acid compensated for the delayed planting effects on root yield until the third planting date. The lowest sodium and potassium contents in the roots were observed in the fourth and second planting dates, respectively, regardless of the hydropriming and humic acid foliar application treatments. The first planting date revealed that foliar application of humic acid singularly led to the maximum sodium accumulation in roots (5.45 meq.100 g-1). Conversely, the minimum potassium content in roots was found in the same planting date when both humic acid foliar application and seed hydropriming were employed (4.2 meq.100 g-1). The highest alkalinity was observed in the first planting date following humic acid foliar application, with a ratio of 4.38. Furthermore, a significant increase in alkalinity was observed in the fourth planting date with humic acid foliar application. The lowest amino nitrogen content was observed on the second planting date with hydropriming. Simultaneous application of hydropriming and humic acid increased white sugar content by 6.6, 9.4, and 6.8 percent on the first, second, and fourth planting dates, respectively. The highest white sugar yield was obtained on the first and second planting dates, with 15,054 and 15,895 kg.ha-1, respectively, using humic acid. Humic acid reduced molasses sugar content by 24 percent compared to water spray on the first planting date.Conclusion: Based on the results, the simultaneous application of seed hydropriming and humic acid foliar application was beneficial in all planting dates. However, in case of a significant delay in planting date, seed hydropriming was more beneficial compared to humic acid foliar application.

Biochemical Response and Nutrient Uptake of Common Bean to Humic Acid and Phosphorus Sources (Biological and Chemical) under Deficit Irrigation

Neda Hossinzadeh; Alireza Pirzad

Volume 26, Issue 4 , January 2025, Pages 805-824

https://doi.org/10.22059/jci.2024.365576.2856

Abstract

Objective: Bean is a global crop and drought stress has many adverse effects on this plant, so it is necessary to use materials that can reduce the harmful effects of stress in plants and also have compatibility with the environment. Therefore, this study was conducted in order to investigate the effect ... Read More Objective: Bean is a global crop and drought stress has many adverse effects on this plant, so it is necessary to use materials that can reduce the harmful effects of stress in plants and also have compatibility with the environment. Therefore, this study was conducted in order to investigate the effect of humic acid and the availability of phosphorus and substituted chemical fertilizers on the physiological response of the common bean.Method: The research was carried out in the Meshkin Shahr city, Aghblag village, with a latitude of 38o 21’ 31” N and a longitude of 47o 39’ 53” E. This study was carried out as a factorial experiment in the form of a completely randomized design with two factors and three repetitions. The first factor: drought stress in two levels of full irrigation (100% FC) and deficit irrigation (70% FC); second factor: different sources of fertilizers in 6 levels (chemical P, biological P (Barvar 2), Half chemical P+ Barvar 2 (100 grams/hectare), chemical P (150 kg/hectare)+ Humic Acid (10 liters/hectare), Barvar 2+Humic Acid, and Half chemical P+Barvar 2+ Humic Acid.Results: The results showed that applying deficit irrigation led to a decrease in some physiological traits such as chlorophyll a and b, while the fertilizer treatment, especially half of phosphate chemical P + Barvar 2 + humic acid significantly increased chlorophyll a, b and total chlorophyll, and increased the absorption of nitrogen, phosphorus and potassium nutrients. The malondialdehyde as a result of the application of phosphate half chemical P + Barvar 2+ Humic Acid, and the activity of the Superoxide Dismutase as a result of drought stress and the treatment of phosphate half chemical P + Barvar 2+ Humic Acid were increased. In the full irrigation treatment (100% FC), no significant statistical differences were observed in seed weight increase among most fertilizer treatments. However, in the deficit irrigation treatment, it was observed that applying stress and fertilizer treatment led to an increase in seed weight, such that the highest seed yield (6,448.2 kg per hectare) was related to deficit irrigation and the fertilizer treatment of "half chemical phosphate fertilizer + bio-phosphate fertilizer Barvar2 + humic acid."Conclusion: In general, drought stress led to a decrease in the yield and growth factors of beans, and the combined treatment of biofertilizer and humic acid reduced the effect of stress and maintained the plant yield under stress conditions.

The Effect of Azotobacter and Vermicompost Application on Growth and Physiological Characteristics of Watercress (Nasturtium officinale) under Water Stress

Setayesh Mohebbi; Marzieh Ghanbari Jahromi; Weria Weisany

Volume 26, Issue 4 , January 2025, Pages 825-841

https://doi.org/10.22059/jci.2024.367825.2864

Abstract

Objective: The application of biological and organic fertilizers to alleviate the effects of water stress in medicinal plants is eminent. The present research was conducted to investigate the effect of vermicompost amendment and azotobacter biofertilizer on the growth, physiological and biochemical properties ... Read More

Effects of Micronutrient and Vermicompost on the Quantitative Traits and Fatty Acid Composition of Borage (Borago officinalis L.)

Nabaz Abbasi; Shiva Khalesro; Erfan Daneshi

Volume 26, Issue 4 , January 2025, Pages 843-860

https://doi.org/10.22059/jci.2024.359178.2813

Abstract

Objective: This study was conducted in 2018 to investigate the effect of vermicompost and micronutrients on the quantitative and qualitative characteristics of borage (Borago officinalis L.).Methods: The field experiment with a factorial layout was conducted using a randomized complete block design with ... Read More

Investigating the Effects of Biofertilizers on the Absorption of Nutrients, Physiological Characteristics and Shoot Dry Weight of Milk Thistle (Silybum marianum) Medicinal Plant under Different Irrigation Regimes

Ladan Ghorbani; Amin Salehi; Mohsen Movahhdi Dehnavi; Hamidreza Balouchi; Parvin Rostampour

Volume 26, Issue 4 , January 2025, Pages 861-881

https://doi.org/10.22059/jci.2024.360095.2822

Abstract

Objective: The effects of mycorrhizal and Plant-growth promoting rhizobacteria on some characteristics of milk thistle in different irrigation regimes was investigated.Methods: The experiment was conducted as a factorial based on completely randomized design in 3 replications at the research greenhouse ... Read More

Evaluating the Effect of Three Types of Organic Fertilizers on Some Soil Elements, Yield, Yield Components and Seed Oil Percentage of Black Cumin (Nigella sativa L.)

Tahereh Mirzavand; Iraj Alahdadi; Elias Soltani; Fatemeh Benakashani; Shiva Akbari

Volume 26, Issue 4 , January 2025, Pages 883-903

https://doi.org/10.22059/jci.2024.365432.2852

Abstract

Objective: Using practical, safe and cheap methods to produce healthy food and protect the environment is a necessity, and one of these solutions to solve the problem of chemical fertilizers consumption is to use the principles of sustainable agriculture. Biological and organic fertilizers play an effective ... Read More Objective: Using practical, safe and cheap methods to produce healthy food and protect the environment is a necessity, and one of these solutions to solve the problem of chemical fertilizers consumption is to use the principles of sustainable agriculture. Biological and organic fertilizers play an effective role in increasing the yield of agricultural products by increasing the water holding capacity and also improving the biological properties of the soil and having essential nutrients. Biological and organic fertilizers are used as growth promoters with more efficiency than chemical fertilizers. Foliar spraying of nutrients can help in compensating the lack of nutrients absorbed through the roots or supplying the plant's need for these elements in the leaves. Also, by feeding through the leaves and foliar spraying, it can provide food to the plant in the shortest possible time, and this method is a suitable way to reduce the use of chemical fertilizers and reduce their environmental risks. In order to evaluate the effect of three types of organic fertilizers on the yield, yield components and seed oil percentage of Black Cumin (Nigella sativa L.) and the amount of some elements in soil, an experiment has been carried out at the research farm of the College of Aburaihan, University of Tehran, in the agricultural year 2019-2020.Methods: This experiment has been conducted as a factorial based on a randomized complete block design in three replications. The combination of factorial levels were in the form of nutrient fertilizer 1 factor in two levels of 300 kg.ha-1 and no application of nutrient fertilizer 1, nutrient fertilizer 2 factor in 2 levels of 2 lit.ha-1 and no application (spraying with distilled water) and nutrient fertilizer 3 factor in three levels of foliar application at the rate of one and two liters per hectare and no application.Results: The results showed that the use of nutrient fertilizer 1 alone resulted in higher plant dry weight. The use of organic fertilizers compared to the control treatment increased the capsule weight, seed yield, harvest index and seed oil percentage, and the lowest values of these traits belonged to the control treatment. The simultaneous application of nutrient fertilizer 1 and nutrient fertilizer 3 was effective in stimulating nitrogen absorption by the plant, and as a result, reduced the amount of soil nitrogen.Conclusion: In general, it can be concluded that the application of organic fertilizers, especially the nutrient fertilizer 1, has had a favorable effect on the yield and growth characteristics of the plant.

Investigating and Comparing 49 Ecotypes of Dragon's Head (Lallemantia iberica Fisch. et Mey.) in Terms of Yield and Yield Components in East Azerbaijan Region

Jalil Shafagh-Kolvanagh; Adel Dabbagh Mohammadi Nassab; Yaegoob Raii; Mina Amani; Payvand Samimifar

Volume 26, Issue 4 , January 2025, Pages 905-923

https://doi.org/10.22059/jci.2024.365786.2853

Abstract

Objective: The significant importance of identifying, studying, evaluating, and conserving native ecotypes of medicinal plants as part of human heritage, along with the collection of cultivated medicinal plants and the ecological assessment of their native ecotypes, makes the introduction of their compatible ... Read More Objective: The significant importance of identifying, studying, evaluating, and conserving native ecotypes of medicinal plants as part of human heritage, along with the collection of cultivated medicinal plants and the ecological assessment of their native ecotypes, makes the introduction of their compatible ecotypes to farmers a necessity. The purpose of this research was to investigate the ecotypes of common Dragon's head in the region in terms of performance and performance components.Methods: In order to evaluate the features related to the yield and yield components of 49 ecotypes of Dragon's head collected from different regions of the country, a research in the form of a randomized complete block design with 3 replications. The most important traits measured were the number of capsules in the main and secondary stems, the number of seeds per flower cycle in the main and secondary stems, the number of seeds per plant, the weight of 1000 seeds, biological yield, dry herbage yield and seed yield per unit area and seed harvest index.Results: Based on the results of the mean comparison, the ecotypes from Alvar Bostanabad village with an average of 116.3 g/m2, Tabriz 4 with an average of 107.7 g/m2, and the local ecotype Kolavank 14 with an average of 101.7 g/m2 had the highest grain yield per unit area. These results indicate the high potential of these ecotypes for grain production and their adaptability to the climatic and soil conditions of the region. The high performance of these ecotypes may be attributed to their genetic characteristics, adaptability to environmental conditions, and appropriate agricultural management. Additionally, the ecotype from Param 2 in Haris and the Zanjan ecotype achieved the highest thousand-grain weights, with averages of 418.5 g and 385.5 g, respectively, among the studied ecotypes. This characteristic not only reflects the high quality of the grains produced by these ecotypes but may also positively impact the final quality of the products and their marketability. Thousand-grain weight is an important indicator in assessing grain quality and can assist farmers in selecting the best ecotypes for cultivation.Conclusion: Based on the results of this research, the ecotypes from Alvar Bostanabad village, Tabriz 4, and Kolvanagh14 have been identified as the best options in terms of grain yield. These ecotypes, by providing the highest grain yield per unit area, demonstrate their high adaptability to the environmental and climatic conditions of the Tabriz region. Additionally, the ecotypes Tabriz 3, Leilab Varzeqan village, and Alvar Bostanabad village exhibited the highest performance in terms of dry biomass yield and yield components. These results emphasize that these ecotypes can be recognized not only for grain production but also as the most suitable and compatible options for cultivation in the city of Tabriz. Identifying these ecotypes can assist farmers in selecting the best varieties for cultivation, leading to improved agricultural performance and increased productivity in the region. Overall, this research can serve as a solid foundation for future studies and agricultural planning aimed at enhancing agricultural production in the Tabriz area.

Effect of Salicylic Acid and Sodium Selenite on Growth and Photochemical Attributes of Coneflower (Echinacea angustifolia) Under Salinity Stress

Hamed Adeli; Sepideh Kalateh jari; Marjan Diyanat

Volume 26, Issue 4 , January 2025, Pages 925-948

https://doi.org/10.22059/jci.2024.366323.2859

Abstract

Objective: Salinity is one of the most important abiotic stresses that reduces the production of agricultural products. The use of growth stimulating compounds in order to reduce the effects of environmental stress in plants is of particular importance. The present study was conducted to investigate ... Read More Objective: Salinity is one of the most important abiotic stresses that reduces the production of agricultural products. The use of growth stimulating compounds in order to reduce the effects of environmental stress in plants is of particular importance. The present study was conducted to investigate the effect of salicylic acid and sodium selenate on the growth, physiological and biochemical characteristics of coneflower (Echinacea angustifolia) in 2023 at the commercial greenhouse of ornamental plants in Alborz province under salinity stress conditions.Methods: The factors studied in the research include salinity at three levels (zero, 100 and 200 mM sodium chloride) and spraying with salicylic acid and selenium selenate at five levels (control, 5 and 10 mg/l of sodium selenate and 0.5 and 1 mM salicylic acid), conducted factorially in the form of a basic completely randomized design in 3 replications.Results: The results of the research showed that 200 mM of salinity stress caused a significant decrease in the fresh weight of aerial parts (32%), dry weight of roots (27%), total chlorophyll (22%), and relative water content of leaves (16%). and leaf potassium (28%), but caused an increase in ion leakage (11%), catalase enzyme activity (82%), superoxide dismutase enzyme activity (1.37 times), and sodium leaf (2.19 times). Foliar application of bio-stimulants, especially 1 mM salicylic acid, increased the fresh weight (13.07%), root dry weight (13.74%), shoot fresh weight (15.59%), chlorophyll a, b, and total content (13.13%, 14.29%, and 12.08% respectively), relative leaf water content (6.95%), and essential oil yield (27.59%). The interactive treatment of 100 mM salinity and 1 mM salicylic acid had the highest phenol and flavonoid content and essential oil percentage. The highest shoot weight and essential oil yield were obtained in the treatment without stress with 1 mM salicylic acid.Conclusion: Taken together, applying biological stimulants, especially 1 mM salicylic acid, will be recommended under salinity stress conditions in coneflower.

Effect of Salicylic Acid and Brassinosteroid on Grain Yield and Essential Oil of Coriander under Water Deficit conditions

mehdi panahyankivi; Abazar Abbasi; mahnaz mohamadzadeh nasrabadi

Volume 26, Issue 4 , January 2025, Pages 949-967

https://doi.org/10.22059/jci.2024.359656.2817

Abstract

Objective: The aim of this research is to investigate the effect of salicylic acid (SA) and brassinosteroid on yield and essential oil of coriander under water limitation conditions.Methods: A field experiment was conducted as a split-plot on the basis of RCB design with three replications in two agricultural ... Read More

Effect of cadmium on concentration of copper, iron, manganese and zinc in shoot of different cultivars of wheat

Volume 17, Issue 1 , April 2015, , Pages 27-41

https://doi.org/10.22059/jci.2015.54786

Abstract

The aim of this research was to evaluate the average concentrations of micronutrients including: Copper (Cu), Iron (Fe), Manganese (Mn) and Zinc (Zn) in the shoots of different cultivars of wheat in stem elongation stage in a soil contaminated with cadmium (Cd). The treatments consisted of three levels ... Read More

A study on physiological attributes and grain yield of sesame cultivars under different soil moisture regimes

Volume 13, Issue 2 , March 2012, , Pages 75-88

Abstract

Sesame could be an appropriate oilseed crop for water limited environments. This research was aimed at studying growth, leaf chlorophyll fluorescence, proline content, yield and yield components of sesame cultivars under different moisture regimes. A 4-replicate split plot RCBD field experiment was conducted ... Read More

Evaluation of Seed Yield and Oil Content of 40 Camelina (Camelina sativa L.) Doubled Haploid Lines

Volume 24, Issue 2 , June 2022, , Pages 497-509

https://doi.org/10.22059/jci.2021.331945.2622

Abstract

In order to evaluate the yield components, seed yield, and oil content of Camelina doubled haploid lines, an experiment has been conducted based on a randomized complete block design with 40 doubled haploid lines (as treatments) and three replications in the research farm of College of Aburaihan- the ... Read More

Effect of some chemical treatments on postharvest quality and vase life of gerbera cut flowers (Gerbera jamesonii cv. Good Timing)

Volume 13, Issue 1 , August 2011, , Pages 21-29

Abstract

The effect of gibberelic acid (GA3) and ethanol on the postharvest quality and vase life of gerbera cut flowers was investigated. Freshly cut flower stems of gerbera cultivar ‘Good timing’, were put in vases containing zero, 50, 100, 150, 200 or 300 mgL-1 GA3 for 48 hr and then held in vases ... Read More

Phenolic compounds and antioxidant activity of some Iranian and commercial apple varieties in West Azarbaijan province

Volume 14, Issue 2 , February 2013, , Pages 43-55

https://doi.org/10.22059/jci.2013.29500

Abstract

In this study, the amount of total phenol, chlorogenic acid, catechin, quercetin, phloridzin, cyanidin and antioxidant activity of apple (Malus domestica) skin and flesh of six Iranian cultivars, including: ‘Golab Kohanz’, ‘Sib Torsh Dirras’, ‘Ghara Yapragh’, ‘Torkman’, ... Read More

The effect of Cobalt, Molybdenum, and Nitrogen on morphophysiological characteristics of Phaseolus vulgaris in soilless culture

Nader Khadem Moghadam Igdelou; Ahmad Golchin; Khadije Farhadi

Articles in Press, Accepted Manuscript, Available Online from 17 November 2022

https://doi.org/10.22059/jci.2022.292101.2292

Abstract

In order to study the effect of Cobalt, Molybdenum, and Nitrogen on the growth of Phaseolus vulgaris in soilless culture, a pot experiment was conducted in 2015-16 and in July, at 25˚C and light intensity of 40,000 lux as a factorial based on a CRD with 36 treatments and three replications in the greenhouse ... Read More

The effect of drought stress, growth regulator and spraying of zinc and magnesium nanoparticles on morphological and biochemical traits on periwinkle herb (Catharanthus roseus (L.) G.DON)

Babak Sepehri; Hami dreza tohidi Moghadam; Farshad Ghooshchi; Meysam Oveysi; Pourang Kasraie

Articles in Press, Accepted Manuscript, Available Online from 04 April 2023

https://doi.org/10.22059/jci.2023.349779.2749

Abstract

Periwinkle herb with the scientific name (Catharanthus roseus) is one of the most important medicinal plants in the world which in addition to haring leaves beautiful flowers and decorative application, it also has different applications in pharmaceutical industries cosmetics and hygienic. This plant, ... Read More

View Article

Seed Coating of Lateral buds of Sugarcane stem and Selecting the Suitable Combination for Producing Single-bud Sugarcane Seeds.

zahra ajribzadeh; salim farzaneh; Mahmoud Shomili; Hamid Reza Balouchi; aziz Ker Mullah Chaab; Raouf Seyed Sharifi

Articles in Press, Accepted Manuscript, Available Online from 15 April 2023

https://doi.org/10.22059/jci.2023.343312.2713

Abstract

This study was performed to investigate the effect of four types of binders at different levels: carboxymethylcellulose (40, 60 and 80 g/l), arabic gum (50, 100 and 150 g/l), tragacanth (30, 60 and 90 g/l) and starch (45, 60 and 75 g/l) as the first test and four types of nutrients with different levels: ... Read More