Farinaz Angouti; Hasan Nourafcan; Sakineh Saeidi sar; Asad Asadi; Raheleh Ebrahimi
Abstract
An experiment was conducted to evaluate the effect of different levels of chitosan and salicylic acid on morphological traits of the medicinal plant Galega officinalis L. in field conditions in a completely randomized design with three replications in 2017 in the research farm of Islamic Azad University, ...
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An experiment was conducted to evaluate the effect of different levels of chitosan and salicylic acid on morphological traits of the medicinal plant Galega officinalis L. in field conditions in a completely randomized design with three replications in 2017 in the research farm of Islamic Azad University, Miyaneh Branch. The treatments included foliar application with four levels of salicylic acid (0.5, 1, 2, and 3 mM/l), foliar application with four levels of chitosan (0.2, 0.4, 0.6, and 0.8 g/l) and foliar application with distilled water (the control). The results showed that foliar application of biological stimulants had a significant impact on all evaluated traits, except plant height and leaf dry weight. By increasing the concentration of chitosan and salicylic acid, the fresh and dry weight of the stem have decreased so that the highest values in the two traits have belonged to the treatments of chitosan 0.4 and 0.2 g/l and 1 and 0.5 mM/l salicylic acid. Maximum number of internodes (with a numerical mean of 4.80), root length in chitosan treatment (0.4 g/l), and the highest number of leaf (at a concentration of 0.6 g/l chitosan) has been observed. In the study of leaf and root characteristics, chitosan with concentrations of 0.2 and 0.4 g/l and in inflorescence characteristics, salicylic acid with concentrations of 2 and 3 mM/l have been more effective. In general, the use of concentrations of 0.4 and 0.2 g/l chitosan have had a more optimal effect on the morphological traits of the medicinal plant Galega officinalis L., making it ultimately recommended thanks to its positive effect on most of the plant's growth characteristics due to its rapid absorption to achieve the desired yield in a sustainable agricultural path.
Mostafa Ebrahimikia; Matin Jami Moeini; Hamid Marvi; Yousef Hasheminejhad; Mohammad Ghasemzadeh Ganjehie
Abstract
To investigate the effects of row spacing and nitrogen application rate on growth and yield of quinoa, a split plot experiment has been conducted in a randomized complete block design with three replications in Sabzevar during 2018. The studied factors include row spacing at three levels (25, 50, and ...
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To investigate the effects of row spacing and nitrogen application rate on growth and yield of quinoa, a split plot experiment has been conducted in a randomized complete block design with three replications in Sabzevar during 2018. The studied factors include row spacing at three levels (25, 50, and 75 cm) and nitrogen application rate at four levels (0, 50, 100, and 150 kg N ha-1). Results show that the highest content of photosynthetic pigments, panicle length, number of seeds per plant, and biological yield belong to 150 kg N ha-1 treatment. However, the 100 kg N ha-1 treatment has had the highest number of panicles per plant (19.24) and 1000-seed weight (3.51 g). More row spacing has resulted in more chlorophyll contents, plant height, number of panicles, panicle length, and number of seeds per plant, but less 1000-seed weight, seed yield, and biological yield. The decrease in seed yield by increasing the row spacing to 50 and 75 cm has been 18.62 and 50.14%, respectively. The highest seed yield (6644.5 kg ha-1) has been produced via application of 150 kg N ha-1 at a row spacing of 25 cm. With increasing row spacing, nitrogen requirement to produce maximum seed yield declines. Thus, the highest seed yield in 75, 50, and 25 cm rows spacing are produced with the application of 50, 100, and 150 kg N ha-1, respectively. According to the results, the application of 150 kg N ha-1 and row spacing of 25 cm is recommended for planting quinoa, Sajama genotype.
Narges Khatun Jokar; Moazzam Hassanpour Asil
Abstract
In order to evaluate the effects of gibberellic acid and vermicompost on growth and flowering of daffodil flower, a factorial experiment has been conducted under greenhouse conditions, based on completely randomized design with 12 treatments and three replications and four samples in each replication. ...
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In order to evaluate the effects of gibberellic acid and vermicompost on growth and flowering of daffodil flower, a factorial experiment has been conducted under greenhouse conditions, based on completely randomized design with 12 treatments and three replications and four samples in each replication. The first factor involves vermicompost in four levels, namely 0 (control), 10%, 15%, and 20% of potted soil (V/V) and the second factor, three levels of gibberellic acid, 0 (control), 150, and 300 mg/L, all applied by dipping the bulbs for 48 hours. Results of analysis variance of the data show that the impacts of gibberellic acid and vermicompost on most traits such as leaf area, vase life, number of leaves, chlorophyll index, TSS, leaf phosphorus, and leaf potassium have displayed significant effects (P<0.01), compared to the control. Also gibberellic acid and vermicompost have had significant impacts (P<0.01) on carotenoid (0.28 mg.g-1Fw), leaf nitrogen (2.07%), root fresh weight (11 g), root dry weight (1.1 g), and stem diameter (8.11 mm). Also, the duration of flowering stem appearance has had significant effects (P<0.05). This study’s results show that the application of vermicompost at 20% level and gibberellic acid with a concentration of 300 mg/L have improved the growth and accelerated flowering with an average of 10 days, increasing the vase life of flowers with an average of four days with a noticeable difference, compared to the control.
Seyyed Gholamreza Moosavi
Abstract
In order to study the effect of methanol and humic acid on physiological traits, yield and water use efficiency in plant of chicory under drought stress conditions, a split factorial experiment based on randomized complete block design with three replications in a field of Islamic Azad University, Birjand ...
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In order to study the effect of methanol and humic acid on physiological traits, yield and water use efficiency in plant of chicory under drought stress conditions, a split factorial experiment based on randomized complete block design with three replications in a field of Islamic Azad University, Birjand Branch in year of 2015. Irrigation at three levels (irrigation after 70, 140 and 210 mm cumulative evaporation from the evaporation pan) as the main factor and methanol spray at two levels (zero and 21 percentage volume) and humic acid with two levels (zero and 10 L ha-1 ) were as sub factors. The studied traits were chlorophyll meter, stomatal conductance, leaf relative water content, dry yields of root, stem and leaf dry, dry yield of total, root to stem and leaf ratio, water use efficiency of root, stem and leaf and total. The results showed that water deficit stress reduced all physiological and yield traits (except root to stem and leaf ratio) and increased water use efficiency. Application of methanol increased all of the traits (except yield and water use efficiency of root). Application of 10 L ha-1 humic acid increased all the traits (except for the ratio of root to air organs). In general, based on the results of this study, irrigation treatment after 140 mm evaporation from the pan and spraying methanol with 21 percentage volume and humic acid at 10 liters per hectare can be used to achieve yield acceptable for the Chicory plant in the Birjand region.
Fatemeh Zarei; Malek Hossein Shahriari; Rahim Nikkhah; Parviz Bayat; Ali Dindarlou
Abstract
This research was carried out with the aim of studding the effect of chelate and nanochelate of potassium foliar application on some growth and physiological characteristics of basil (Ocimum basilicum L.) under deficit irrigation stress. The study was conducted as a factorial experiment in a randomized ...
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This research was carried out with the aim of studding the effect of chelate and nanochelate of potassium foliar application on some growth and physiological characteristics of basil (Ocimum basilicum L.) under deficit irrigation stress. The study was conducted as a factorial experiment in a randomized complete block design with three replications in the greenhouse of Agriculture Faculty of Bushehr University in 2016-2017. Plants were subjected to four deficit irrigation stress levels (100, 80, 60 and 40% of field capacity moisture). Four different rates of chelate and nanochelate of potassium (0, 1, 3 and 5 g/L) were applied through foliar spray. The results indicated that deficit irrigation stress significantly (p
Saber Sadeghpour; Lotfali Naseri
Abstract
In this research, the effect of different concentrations of chitosan (with low molecular weight) on in vitro proliferation of grape cultivar, ’Bidaneh Ghermez‘, was evaluated. 30 days after establishment, elongated shoots were cultured on the half strength Murashige and Skoog medium supplemented ...
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In this research, the effect of different concentrations of chitosan (with low molecular weight) on in vitro proliferation of grape cultivar, ’Bidaneh Ghermez‘, was evaluated. 30 days after establishment, elongated shoots were cultured on the half strength Murashige and Skoog medium supplemented with 0.5 mg/l BAP, 0.1 mg/l IBA and different chitosan concentrations (0, 10, 20, 40 and 80 mg/l). The experiment was based on completely randomized design with five replications. Based on the results, the number of shoots, wet and dry weight of biomasses, leaf surface and chlorophyll index were highest at 40 mg/l chitosan. The highest shoot length and diameter were observed at 20 and 40 mg/l chitosan. The highest internode length was seen both in the control and 40 mg/l chitosan. In general, 40 mg/l chitosan significantly improved the proliferation. As a result it can be used as a growth stimulant material to increase for in vitro proliferation of this grape cultivar.