scholarly journals Effects of Osmopriming on Germination and Vigour Traits of Bersim Clover (Trifolium alexandrinum L.)

2010 ◽  
Vol 2 (4) ◽  
pp. 59-63 ◽  
Author(s):  
Hossein Reza ROUHI ◽  
Reza Tavakkol AFSHARI ◽  
Seyed Amir MOOSAVI ◽  
Mohammad Hossain GHARINEH
Keyword(s):  
Polyethylene Glycol ◽  
Osmotic Potential ◽  
Seed Priming ◽  
Control Group ◽  
Trifolium Alexandrinum ◽  
Distilled Water ◽  
Peg 6000 ◽  
Crop Establishment ◽  
Germination Characteristics ◽  
Polyethylene Glycol 6000

Previous studies suggested that fast and uniform germination is important for good crop establishment. The present study was conducted to investigate the possibility of increasing germination characteristics by seed priming techniques. An experiment was conducted with three replicates and two treatments including: 2 different priming duration (8 and 12 hours) and 6 osmotic potential of PEG 6000 solutions (-0.8, -1,-1.2,-1.4,-1.6 Mpa) and distilled water as a control group). The priming solutions were prepared using polyethylene glycol 6000 (PEG). Our results showed that the most effective osmotic potential in improving germination characteristics of Trifolium alexandrium is -0.8 MPa for 16 hours.

Effect of Priming Techniques on Seed Germination Characteristics of C. Maxima Duch

2011 ◽  
Vol 474-476 ◽  
pp. 36-39 ◽  
Author(s):  
Yong Dong Sun ◽  
Xin Zheng Li ◽  
He Lian Yang ◽  
Li Sun
Keyword(s):  
Polyethylene Glycol ◽  
Seed Germination ◽  
Seed Priming ◽  
Distilled Water ◽  
Nacl Solution ◽  
Peg 6000 ◽  
Germination Process ◽  
Germination Characteristics ◽  
Successful Technique

The present study was conducted to investigate the effect of seed priming techniques on germination characteristics of C. maxima Duch. cultivar (Beiguan). Treatments were combinations of 3 levels of priming (distilled water, NaCl and PEG6000) and non-priming (control) with 3 replications. Concentrations of NaCl solution were 50, 100, 150, 200 mmol•L-1, and polyethylene glycol (PEG) 6000 were 10%, 20%, 30%, 40%, respectively. Seeds were primed using the above priming materials for 24 hours at 20°C in the dark, respectively. The results showed that different priming techniques could have various effects on germination of Beiguan seeds. Hydropriming (distilled water), NaCl priming and PEG6000 priming (10%) all improved the germination characteristics of Beiguan, compared to the control. NaCl priming was more effective than hydropriming and PEG6000 priming and was the most successful technique in this study. These findings indicated that seed priming techniques could accelerate germination process and were simple and cheap, we should propose these methods to farmers.

scholarly journals Ameliorative Effect of Seed Priming on Germination, Vigour Index and Tolerance Index against Short Term Moisture Stress in Maize (Zea mays L.)

2020 ◽  
Author(s):  
V. Singh ◽  
M. Sharma ◽  
H. Upadhyay ◽  
A. Siddique
Keyword(s):  
Polyethylene Glycol ◽  
Seed Priming ◽  
Moisture Stress ◽  
Magnesium Nitrate ◽  
Tolerance Index ◽  
Short Term ◽  
Seed Vigour ◽  
Peg 6000 ◽  
Vigour Index ◽  
Polyethylene Glycol 6000

An experiment was carried out to evaluate the effect of seed priming with magnesium nitrate salt against the moisture stress condition induced by Polyethylene glycol-6000 on seed germination, vigour index and tolerance index in root and shoot. Polyethylene glycol-6000 was used to create short term moisture stress under laboratory conditions while the seed priming was carried out by using magnesium nitrate. The percent germination, seed vigour index and tolerance index were started to decline from T1 to T4 (i.e. set first 1.5 and 4.5 % of PEG-6000 solution + none primed seed) while the results of second set (i.e. PEG-6000 + primed seed from T5 to T8) were also following the same decreasing trend along with improvement in every parameters. The germination was recorded highest 100 percent in T5 (i.e. 1.5% PEG-6000+ primed seed) followed by T6, T1 and T7 (T6 and T7 is 2.5% and 3.5 % PEG-6000+ primed seed) while the control set recorded 98.7% at final date of observations i.e. 240 Hrs. vigour index and tolerance index was also decreasing in both the set of treatments but PEG-600 + primed seed showed better results as compared to the treatments PEG-6000 + none primed. Tolerance index percent was recorded maximum in root as compare to shoot at 120 hrs. of intervals while the reverse result was recorded at 240 hrs. of intervals.

scholarly journals Physiological quality of osmoprimed Eremanthus erythropappus (D.C.) MacLeish seeds

2020 ◽  
Vol 13 (5) ◽  
pp. 18
Author(s):  
A. M. S. Oliveira ◽  
A. A. Silva ◽  
M. C. Vasconcelos ◽  
J. A. A. Granja ◽  
J. M. R. Faria ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Germination Rate ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
The Other ◽  
Other Substances ◽  
Physiological Quality ◽  
Glycol Solution ◽  
Polyethylene Glycol 6000

Physiological conditioning is a technique that consists in controlling the speed of water uptake by seeds, with osmotic solutions, aiming to improve their quality, reducing time and increasing germination rate. Eremanthus erythropappus (D.C.) MacLeish seeds were subjected to priming with polyethylene glycol 6000 (PEG), potassium nitrate (KNO3) and the combination of the two at the concentrations of 0.4; -0.8; -1.0; -1.2 and -1.4 MPa for four, six and eight days. Germination, germination speed index (GSI), emergence, emergence speed index (ESI) and expression of superoxide dismutase (SOD), catalase (CAT) and peroxidase (PO) enzymes were assessed. E. erythropappus seed priming in polyethylene glycol solution with potentials between -0.8 MPa and -1.4 MPa is not satisfactory because it adversely affects germination and reduces the activity of peroxidase and catalase enzymes. The other substances were not significant so there is a need for further research with other substances and / or concentrations

scholarly journals Pattern of Capsule and Seed Development in Sesame (Sesamum indicum L.) as Influenced by Seed Priming

2020 ◽  
pp. 1-7
Author(s):  
Utpal Biswas ◽  
Rupa Das ◽  
Amitava Dutta
Keyword(s):  
Polyethylene Glycol ◽  
Seed Development ◽  
Seed Weight ◽  
Seed Priming ◽  
Quality Parameters ◽  
Steady Increase ◽  
Peg 6000 ◽  
Yield And Quality ◽  
Main Plot ◽  
Days After Anthesis

Aim: To study the influence of seed priming on the pattern of capsule and seed development in sesame. Place and Duration of Study: The field experiment was conducted during the pre kharif seasons of 2017-2018 and 2018-2019 in sesame variety Savitri at AB Block farm, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, India. Methodology: Experiment was laid out in split plot design with 3 replications. Ten schedules of seed priming viz T1 (KNO3 @ 10 mM), T2 (KNO3 @ 20 mM), T3 (KNO3 @ 50 mM), T4 (KH2PO4 @ 50 mM), T5 (KH2PO4 @ 100 mM),T6 (KH2PO4 @ 200 mM), T7 [Polyethylene glycol (PEG) 6000 @ -0.4 MPa], T8 [Polyethylene glycol (PEG) 6000 @ -0.3 MPa], T9 [Polyethylene glycol (PEG) 6000 @ -0.2 MPa], T10 Distilled water (Hydro priming) along with control T11 (Dry seed) were taken as main plot treatment and stage of harvest was considered as sub plot treatment. The pattern of capsule and seed development was studied at 10 days after anthesis (DAA), 20 days after anthesis (DAA), 30 days after anthesis (DAA), 40 days after anthesis (DAA) and 50 days after anthesis (DAA) interval. Ten plants from each replication and in each treatment were selected at random to record data on morphological and physiological characters. Results: Fresh capsule length, fresh capsule breadth, fresh capsule weight, fresh seed weight and dry seed weight showed a steady increase up to 40 days after anthesis (DAA) then decreased slowly up to maturity. Conclusion: Considering seed yield and quality parameters, T7 [Polyethylene glycol (PEG) 6000 @ -0.4 MPa] and T9 [Polyethylene glycol (PEG) 6000 @ -0.2 MPa] appears to be ideal among the treatments for quality seed production in sesame.

Effect of different priming treatments and priming durations on melon germination behavior under suboptimal conditions

2018 ◽  
Vol 3 (1) ◽  
pp. 386-392 ◽  
Author(s):  
J. L. Castañares ◽  
C. A. Bouzo
Keyword(s):  
Polyethylene Glycol ◽  
Low Temperature ◽  
Temperature Stress ◽  
Osmotic Potential ◽  
Germination Percentage ◽  
Control Treatment ◽  
Saline Stress ◽  
Mean Germination Time ◽  
Osmotic Agents ◽  
Polyethylene Glycol 6000

AbstractThe objective of this work was to compare the effect of different priming osmotic agents and durations on melon germination in: 1) low temperature stress; 2) saline stress; and 3) low temperature and saline stress. The osmotic agents were polyethylene glycol 6000, KNO3+K3PO4, CaCl2and NaCl, with -1.5 MPa osmotic potential. Priming durations were 3 and 6 days (d). Germination percentage (GP) and mean germination time (MGT) were measured. At 12°C the best GP was 14% with CaCl2/3-d, without germination in control. At 25°C the best GP was 100% with CaCl2/3-d. MGT was reduced one day. At -0.7 MPa GP was 100% with CaCl2/3-d and NaCl 3d. At -1.0 MPa the best GP were 46 and 50% for 3d with NaCl and CaCl2respectively without germination in control treatment. At 12°C and -1.0 MPa the best GP were CaCl2/3-d and CaCl2/3-d (14 and 10% respectively). It is concluded that at 12°C, the increase in GP would not justify the use of priming. At 25°C priming increased GP and reduced MGT. At -0.7 MPa priming increased germination, while at -1.0 MPa the increase is not agronomical considerable. At 12°C and -1.0 MPa the increase of germination is not agronomical important.

Accumulation of polyethylene glycol 6000 and its effects on water content and carbohydrate level in water-stressed tomato plants

1988 ◽  
Vol 66 (5) ◽  
pp. 970-973 ◽  
Author(s):  
E. Jacomini ◽  
A. Bertani ◽  
S. Mapelli
Keyword(s):  
Polyethylene Glycol ◽  
Water Stress ◽  
Soluble Sugar ◽  
Physiological Effects ◽  
Tomato Plants ◽  
Peg 6000 ◽  
Plant Parts ◽  
Tomato Roots ◽  
Peg Treatment ◽  
Polyethylene Glycol 6000

Young tomato plants were grown in 10 or 25% polyethylene glycol (PEG) 6000 solutions to impose water stress. Plant organs were analyzed to ascertain whether the various plant parts accumulated PEG and to determine the physiological effects. PEG 6000 was taken up by tomato roots and translocated to the shoots. PEG accumulation was greater in roots and in the first leaves and negligible in apical leaves. In all leaves there was an increase in soluble-sugar concentration during the PEG treatment. However, PEG-accumulating leaves showed a delay in dehydration in comparison with leaves where PEG was not accumulated. To explain this behaviour we hypothesize that PEG was accumulated in extracellular spaces and that, as a consequence, water was drawn out from the cells, inducing cellular but not tissue dehydration.

HIGH PURITY MESOPOROUS Γ-AL2O3 FROM KANO KAOLIN IN THE PRESENCE OF POLYETHYLENE GLYCOL 6000 (PEG-6000) SURFACTANT

2017 ◽  
Vol 79 (3) ◽  
Author(s):  
Abdu Muhammad Bello ◽  
Abdul Rahim Yacob ◽  
Kamaluddeen Suleiman Kabo
Keyword(s):  
Polyethylene Glycol ◽  
Pore Size ◽  
Surface Area ◽  
High Purity ◽  
Pore Volume ◽  
High Surface ◽  
Large Surface Area ◽  
Peg 6000 ◽  
X Ray ◽  
Polyethylene Glycol 6000

Mesoporous γ-Al2O3 with large surface area and narrow pore size was synthesized from acid-leachates of calcined kaolin in the presence of polyethylene glycol 6000 (PEG-6000) surfactant at room temperature. The synthesized alumina was characterized by X-ray diffraction (XRD), Nitrogen adsorption-desorption, Fourier transform infra-red spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray analysis (EDX), and thermogravimetric-Derivative thermal analysis (TG-DTA). High-purity mesoporous γ-Al2O3 with large surface area of 365.1 m2/g, narrow pore size distribution centred at 5.3 nm and pore volume of 0.46 cm3/g was obtained at 500 oC. When the calcination temperature has increased to 700 oC, the surface area decreased to 272.9 m2/g. Crystallite size calculated using Scherer’s equation revealed the average size of 4.33 and 4.12 nm for alumina calcined at 500 and 700 oC, respectively. The excellent pore structural properties (high surface area and large pore volume) of the synthesized mesoporous γ-alumina in the present study will allow for higher loading of active catalytic phases, as such it can be used as catalyst support.  

scholarly journals The Osmotic Potential of Polyethylene Glycol 6000

1973 ◽  
Vol 51 (5) ◽  
pp. 914-916 ◽  
Author(s):  
Burlyn E. Michel ◽  
Merrill R. Kaufmann
Keyword(s):  
Polyethylene Glycol ◽  
Osmotic Potential ◽  
Polyethylene Glycol 6000

Research on Refractory Material with Influence of Polyethylene Glycol (PEG) 6000 on the Properties of Lubricant for Slide Plate

2014 ◽  
Vol 540 ◽  
pp. 64-67
Author(s):  
Tian E Su ◽  
Chao Lin Miao
Keyword(s):  
Polyethylene Glycol ◽  
Oxidative Stability ◽  
Refractory Material ◽  
Flake Graphite ◽  
Coating Performance ◽  
Percentage Content ◽  
Peg 6000 ◽  
Slide Coating ◽  
Coating Stability ◽  
Polyethylene Glycol 6000

The coating for slide plate was prepared using Flake graphite and antioxidant as starting materials. The effects of their additions for the polyethylene glycol (peg) 6000 on the performance of the lubricant were studied, The Oxidation property of the prepared lubricant was compared with the imported lubricant from Japan. The results show that, when the polyethylene glycol 6000 quality percentage content is more than 3%, coating stability, adhesivity, oxidative stability is good. In order to meet the slide coating performance and easy coated, when polyethylene glycol 6000 quality percentage content is 3%, slide paint the best performance.

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