scholarly journals Physiological Assessment of Radiation and PVP/ Zn-Nanoparticles on Sour Orange Seedling

2019 ◽  
pp. 1-18
Author(s):  
Nadia A. Hamed ◽  
M. Salah ◽  
M. F. Ahmed ◽  
Tahsin Shoala
Keyword(s):  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Tap Water ◽  
Protein Pattern ◽  
Polymer Network ◽  
Chemical Properties ◽  
Germination Percentage ◽  
Stem Diameter ◽  
Stem Length ◽  
Sour Orange

Aims: The objective of this study is evaluate the effects of both pre-sowing gamma irradiation at low dose of 0 or 20 Gy and the soaking part of radiated seeds in zinc nanoparticles (Zn NPs) solutions at rate 0, 500, 1000 and 2000 ppm on behavior and physiological changes of sour orange seedling. Study Design: The design of the study is Two-Way Randomized Blocks. Place and Duration of Study: The present study was carried out during two successive seasons of 2016-2017 and 2017-2018 on sour orange rootstock (Citrus aurantium) grown at the experimental farm of the  Horticulture Institute, Giza , Egypt. Methodology: Eight different treatments were used as follow: 1) Control, 2) Gamma radiation at 0 Gy + soaking in Zn NPs at 500 ppm. 3) Gamma radiation at 0 Gy + soaking in Zn NPs at 1000 ppm. 4) Gamma radiation at 0 Gy + soaking in Zn NPs at 2000 ppm. 5) Gamma radiation at 20 Gy + soaking in tap water Zn NPs at 0 ppm. 6) Gamma radiation at 20 Gy + soaking in Zn NPs at 500 ppm. 7) Gamma radiation at 20 Gy + soaking in Zn NPs at 1000 ppm. 8) Gamma radiation at 20 Gy + soaking in Zn NPs at 2000 ppm. Results: Transmission electron microscope (TEM) images showed multiple shapes and uniform distribution of Zn NPs through the polymer network and the mean size of Zn NPs ranging is 40.9 nm. Generally, the results reveal that, 20 Gy combined with 1000ppm Zn NPs treatment increased seed germination percentage and stem length. While, 20 Gy plus 500 ppm Zn NPs treatment increased stem diameter and plant pigments concentration. Protein analysis of sour orange seedling treated with gamma radiation and then Zn NPs showed that, protein groups pattern (10-20 KD) enhanced with gamma rays 20 gray alone or with Zn NPs at 500 or 1000 ppm, while the protein groups pattern above 60 KD disappeared. Conclusion: Using gamma irradiation and then soaking part of irradiated seeds in Zn NPs solutions had significant effects on vegetative growth and root characters as well as some chemical properties of sour orange leaves. In addition, there are variable differences in the protein pattern between treated and untreated sour orange seedlings with gamma radiation and / or Zn NPs. Although, 20 Gy + 500 ppm Zn NPs treatment increased stem diameter, which is the main characteristic for the success of grafting process, the obtained results showed changes in proteins and it possible the gene structure had been changed due to this treatment.

scholarly journals Allelopathic Effects of Ludwigia decurrens and L. adscendens subsp. diffusa on Germination, Seedling Growth and Yield of Corchorus olitorious L.

2010 ◽  
Vol 2 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Ayobola A. Moninuola SAKPERE ◽  
Matthew OZIEGBE ◽  
Idowu Arinola BILESANMI
Keyword(s):  
Seedling Growth ◽  
Vegetative Growth ◽  
Tap Water ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Growth And Yield ◽  
Stem Length ◽  
Allelopathic Effect ◽  
Water Control ◽  
Seedling Mortality

This study examined the allelopathic effect of Ludwigia decurrens and L. adscendens exudates on germination, seedling growth (hypocotyl and radicle elongation), seedling mortality, vegetative growth and reproductive yield of Corchorus olitorious. Ludwigia decurrens, L. adscedens exudates and tap water (control) were applied to seeds of Corchorus olitorious over a period of 15 days and to 3 weeks old seedling for a period of 4 weeks. Ludwigia exudates had no inhibitory effect on the germination percentage of C. olitorious, but the exudates from the two Ludwigia spp. induced mortality rate of the 15 day old seedlings (control: 5.00%, L. decurrens: 17.50%, L. adscendens: 26.88%) and a significant decrease in seedling elongation (hypocotyl and radicle length) of C. olitorious. For the vegetative growth experiment, results showed that the stem length, stem fresh weight and leaf area of C. olitorious were significantly inhibited during week 6 (P

scholarly journals Application of Arbuscular Mycorrhiza from Senaru Forest Rhizosphere for Gyrinops versteegii Germination and Growth

2018 ◽  
Vol 10 (2) ◽  
pp. 433-439 ◽  
Author(s):  
I Gde Adi Suryawan Wangiyana ◽  
Sukardi Malik
Keyword(s):  
Growth Parameters ◽  
Germination Rate ◽  
Germination Percentage ◽  
Medium Composition ◽  
Stem Diameter ◽  
Stem Length ◽  
Growth Media ◽  
Media Composition ◽  
Germination And Growth ◽  
Rhizosphere Sample

The aims of this research are to apply Senaru forest  rhizosphere on Kabupaten Lombok Barat West Nusa Tenggara as Mycorrhiza inoculants for Gyrinops versteegii germination and growth. Rhizosphere sample was taken from ten sampling spot on Senaru forest between Latitude: 08o18.808’ S – 08o19.174’ S and Longitude: 116o24.138’ E – 116o24.181’E. This study employed Factorial Experiment Design with 2 Factor including: Medium Composition (M) and Mychorizza Inoculant (I). There were 5 media composition: M1 (sand), M2 (soil:sand = 1:2), M3 (soil:sand = 1:1), M4 (soil:sand = 2:1), M5 (soil). There were 2 types of Inoculation: I1 (without inoculant) and I2 (innoculant from senaru Rhizosphere). Growth parameters observed in this study were: germination percentage, stem length, stem diameter and root colonization. Germination percentage of G. versteegii seeds in all growth media are below 60 % which could be classified as low germination rate. Also germination from media without rhizosphere is higher than germination from media with rhizosphere. On the other hand, G. versteegii growth on rhizosphere media is slightly higher than growth of G. versteegii on media without rhizosphere based on stem diameter and length measurement. It tends that medium composition with higher sand proportion tended to gives better germination and growth rate of G. verteegii. Myorrhiza colonization on G. versteegii root was higher in media with rhizosphere addition. It could be concluded that Application of Senaru rhizosphere containing Mycorrhiza increases G. versteegii growth but not its germination percentage. This research enrich knowledge in biological science about asociation of mycorrhiza with G. versteegii especially on its growth and germination

scholarly journals Improvement of Thanaka Powder by Gamma Radiation: Microbial and Chemical Properties

2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Wachiraporn Pewlong ◽  
Surasak Sajjabut ◽  
Sirilak Chookaew ◽  
Jarurattana Eamsiri ◽  
Khemruji Khemthong ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Chemical Properties ◽  
Bacterial Count ◽  
Stem Bark ◽  
Total Phenolic ◽  
Total Bacterial Count ◽  
Radiation Process

Thanaka powder is made from the stem bark of the Hesperethusa crenulata plant. Most Burmese women use it on the skin of the face as sun protection, a moisturizing agent and acne treatment. For a hygiene purpose, gamma radiation is currently used to control microorganisms and insect contamination in many products. In this experiment, the the effects of gamma radiation on the microbial numeration, total phenolic content, antioxidant activity, and chemical constituent alterations in Thanaka powder were investigated. Gamma irradiation was applied to powder samples at 5, 10, 15 and 20 kGy. The total bacterial count and total yeast and mold count were decreased with increasing irradiation dose. Gamma irradiation at a dose of 5 kGy was sufficient to reduce the microbial load in the powder to meet the standards of microbial quality for cosmetic products in Thailand. No significant change in the DPPH activity of the Thanaka powder was observed after irradiation. Additionally, the radiation process caused significant increases in total phenolic content, FRAP value and arbutin content. At a dose of 20 kGy, the total phenolic content, FRAP value and arbutin content were significantly higher than the non-irradiated Thanaka powder at 7.45, 9.59 and 16.04%, respectively.

THE EFFECT OF GAMMA STERILIZATION AND ITS EFFECT ON MICROSCOPIC STRUCTURE OF DEEP FROZEN DOG SKULL

2018 ◽  
pp. 37-40
Author(s):  
Phuong Thao Tien Nguyen ◽  
Anh Hung Tran ◽  
Van Tam Le ◽  
Huu Thao Phung ◽  
Phan Quynh Anh Nguyen
Keyword(s):  
Structural Change ◽  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Key Words ◽  
Bone Matrix ◽  
Infected Tissue ◽  
Microscopic Structure ◽  
Bacteriological Examination ◽  
Microscopic Scale

Objective: To evaluate the effect of gamma sterilization and its effect on microscopic structure of deeply frozen dog skull. Subjects and methods: 50 pairs of dog skull fragments have the same size,which were taken symmetrically through the midline of the skull, were divided into two lots. Evident lot consisting of 50 pieces are just deeply frozen, not irradicated. Experimental lot which was composed of 50 pieces were deeply frozen and exposed to 25kGy of gamma radiation. Afterwards, to evaluate the effect of gamma sterilization and compare the alter of bone matrix between lot groups. Results: After gamma irradiation, all dog skull fragments were negative with bacteriological examination. In microscopic scale, no difference was found between the two lots and there was no structural change in the irradiated fragments of all dog skull. Conclusion: Gamma irradiation with 25 kGy: (i) It has the ability to kill bacteria completely in the type of bacteria commonly infected tissue. (ii) It does not alter the structure of dog skull in microstructures. Key words: dog skull, gamma, sterilize

Vernalization Accelerates Flowering of Lysimachia clethroides Duby

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 508b-508
Author(s):  
Pamela M. Lewis ◽  
Alan M. Armitage ◽  
Jim M. Garner
Keyword(s):  
Stem Diameter ◽  
Stem Length ◽  
Cut Flower ◽  
Bud Formation ◽  
Flower Production ◽  
Sphagnum Peat ◽  
Potting Media ◽  
Lysimachia Clethroides ◽  
Shoot Emergence

The effect of vernalization method and duration on off-season cut flower production of Lysimachia clethroides Duby was examined. Rhizomes harvested in October were cooled for 0, 4, 6, 8, 10 or 12 weeks at 4 ± 1 °C in crates with unmilled sphagnum peat or in 3.75-L pots with potting media prior to forcing in a warm greenhouse. After 6 or more weeks of cooling, shoots emerged from crate-cooled rhizomes in higher percentages than from pot-cooled rhizomes. However, only the duration of cooling, not the method, affected the rate of shoot emergence, visible bud formation and anthesis of the first bud in the raceme. As cooling increased from 0 to 12 weeks, the greenhouse days required for shoot emergence, visible bud formation and anthesis decreased linearly. The number of flowering flushes and flowering stems varied quadratically with cooling duration, and the highest yields occurred when rhizomes received between 4 and 10 weeks of cooling. As the number of successive flowering flushes increased, the stem length increased linearly while the stem diameter decreased linearly. High numbers of flowers were produced rapidly after 10 weeks of cooling.

scholarly journals NaCl- and Na2SO4-Induced Salinity Differentially Affect Clay Soil Chemical Properties and Yield Components of Two Rice Cultivars (Oryza sativa L.) in Burundi

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 571
Author(s):  
Willy Irakoze ◽  
Hermann Prodjinoto ◽  
Séverin Nijimbere ◽  
Jean Berchmans Bizimana ◽  
Joseph Bigirimana ◽  
...  
Keyword(s):  
Oryza Sativa L ◽  
Stomatal Density ◽  
Tap Water ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Control Treatment ◽  
Saline Stress ◽  
Plant Responses ◽  
Rice Grain ◽  
Resistance Level

Salinity may strongly influence the interaction between plant roots and surrounding soil, but this has been poorly studied for sodium sulfate (Na2SO4). The aim of this study was to investigate the effect of sodium chloride (NaCl) and Na2SO4 salinities on the soil chemical properties as well as rice physiological- and yield-related parameters of two contrasted cultivars (V14 (salt-sensitive) and Pokkali (salt-resistant)). Pot experiments were conducted using soil and electrolyte solutions, namely NaCl and Na2SO4, inducing two electrical conductivity levels (EC: 5 or 10 dS m−1) of the soil solutions. The control treatment was water with salt-free tap water. Our results showed that soil pH increased under Na2SO4 salinity, while soil EC increased as the level of saline stress increased. Salinity induced an increase in Na+ concentrations on solid soil complex and in soil solution. NaCl reduced the stomatal density in salt-sensitive cultivar. The total protein contents in rice grain were higher in V14 than in Pokkali cultivar. Saline stress significantly affected all yield-related parameters and NaCl was more toxic than Na2SO4 for most of the studied parameters. Pokkali exhibited a higher tolerance to saline stress than V14, whatever the considered type of salt. It is concluded that different types of salts differently influence soil properties and plant responses and that those differences partly depend on the salt-resistance level of the considered cultivar.

DEVELOPMENT OF A RAPID CONTINUOUS FLOW SALT LEACHING KIT FOR FABRICATION OF POLY(3-HYDROXYBUTYRIC ACID-CO-3-HYDROXYVALERATE) (PHBV) POROUS 3-D SCAFFOLD

2015 ◽  
Vol 75 (1) ◽  
Author(s):  
Syazwan Aizad ◽  
Badrul Hisham Yahaya ◽  
Saiful Irwan Zubairi
Keyword(s):  
Conventional Method ◽  
Continuous Flow ◽  
Tap Water ◽  
Chemical Properties ◽  
Porous Scaffolds ◽  
Time Saving ◽  
Salt Particle ◽  
Salt Leaching ◽  
Leaching Process ◽  
Highly Efficient

Polyhydroxyalkanoates (PHAs) that are synthesized from bacteria that are predominantly produced by microbial fermentation processes on organic waste, such as palm oil mill effluent (POME), olive oil and kitchen waste, contribute to a sustainable waste management. A great variety of materials from this family can be produced, however the application of PHAs in the production of scaffolds in tissue engineering has been mainly constrained to poly(hydroxybutyrate-co-valerate) (PHBV) due to its highly adjustable physico-chemical properties. One of the common methods in making the 3-D scaffolds is by performing solvent-casting particulate-leaching (SCPL) process, but this process requires a long period of soaking in water to extract the entire salt particle in the 3-D scaffolds. Therefore, the objective of this study is to develop a new method to the conventional method of salt leaching process via a highly efficient continuous flow leaching kit. The salt leaching process was carried out by (1) immersing the 3-D porous scaffolds in a fabricated static container containing tap water and (2) by allowing a pre-setting continuous flow rate of water. The concentration of sodium chloride (NaCl) was calculated periodically for both processes based on the salt standard calibration curve. The results showed that the exhaustive salt leaching of the conventional process occurred at 48 ± 5 hrs with the needs of changing the water twice a day. In contrast, the exhaustive salt leaching process via continuous flow leaching kit occurred at 40 ± 5 mins, 72 times faster than the conventional method (p<0.05). Therefore, the salt leaching process using continuous flow leaching kit can be considered a highly efficient and time saving procedure as compared to the conventional method.  

scholarly journals Waste Tire Particles and Gamma Radiation as Modifiers of the Mechanical Properties of Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Eduardo Sadot Herrera-Sosa ◽  
Gonzalo Martínez-Barrera ◽  
Carlos Barrera-Díaz ◽  
Epifanio Cruz-Zaragoza
Keyword(s):  
Mechanical Properties ◽  
Gamma Radiation ◽  
Chemical Properties ◽  
Plain Concrete ◽  
Cement Matrix ◽  
Portland Cement Concrete ◽  
High Concentration ◽  
Good Tool ◽  
Waste Tire ◽  
Physical And Chemical

In polymer reinforced concrete, the Young’s modulus of both polymers and cement matrix is responsible for the detrimental properties of the concrete, including compressive and tensile strength, as well as stiffness. A novel methodology for solving such problems is based on use of ionizing radiation, which has proven to be a good tool for improvement on physical and chemical properties of several materials including polymers, ceramics, and composites. In this work, particles of 0.85 mm and 2.80 mm obtained from waste tire were submitted at 250 kGy of gamma radiation in order to modify their physicochemical properties and then used as reinforcement in Portland cement concrete for improving mechanical properties. The results show diminution on mechanical properties in both kinds of concrete without (or with) irradiated tire particles with respect to plain concrete. Nevertheless such diminutions (from 2 to 16%) are compensated with the use of high concentration of waste tire particles (30%), which ensures that the concrete will not significantly increase the cost.

Mass Treatment of Flooded Archival Materials by Gamma Radiation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Matteo Montanari ◽  
Sara Pipponzi ◽  
Pietro Livi ◽  
Antonio Prodi
Keyword(s):  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Culture Method ◽  
Test Species ◽  
Atp Assay ◽  
Recovery Processes ◽  
Mycelia Growth ◽  
Thermal Drying ◽  
Radiation Treatments ◽  
Main Components

Abstract This work describes mass recovery processes of flooded archival materials at industrial scale. The presence of fungi on paper represents a threat to the integrity of the document because they degrade cellulose, one of the main components of paper. Gamma radiation treatments are investigated as mass disinfection agents for their high penetrating power, speed of treatment, and absence of risk due to chemical residuals. We compared two different recovery processes: thermal drying followed by gamma irradiation and gamma irradiation followed by thermal drying. Both these processes were conducted simultaneously on naturally contaminated archival items and on paper specimens artificially contaminated with species test. Efficacy was assessed by culture method and ATP assay, right after the treatments and after four years of storage at room temperature. Coupling gamma irradiation with a drying step with dry heat at 55–60 °C reduces the fungal loads on natural items up to levels close to the detection limits, and the reduction is maintained after four years. On artificial specimens, spore germination is completely inhibited, mycelia growth is also highly affected, but the melanised test species appear to be more resistant. A synergistic effect between gamma irradiation, water content, and thermal drying is highlighted in this paper.

scholarly journals Effect of gamma irradiation on fatty acid composition of total lipids in rabbit skin

2014 ◽  
Vol 68 (3) ◽  
pp. 34-36
Author(s):  
S. Kostyuk ◽  
A. Busenko
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Gamma Radiation ◽  
Gamma Irradiation ◽  
Acid Composition ◽  
Total Lipids ◽  
Rabbit Skin

It is found that gamma radiation leads to a significant decrease in the skin of rabbits content of these fatty acids, as meristinіс, pantadekanovaya, palmitic, palmitoleic, linoleic, arachidonic, and at the end issledvany, ie 76 Tide day, the concentration of fatty acids increased, and meristinіс palmitoleic and close to the physiological norm.

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