scholarly journals Effects of Plasma Focus on Seed Germination and Seedling Growth of 14 Thai Rice Varieties

2021 ◽  
Vol 18 (14) ◽  
Author(s):  
Vichai PURIPUNYAVANICH ◽  
Arlee TAMMAN ◽  
Piyanuch ORPONG ◽  
Roppon PICHA ◽  
Mayuree LIMTIYAYOTHIN ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Plasma Focus ◽  
Germination Rate ◽  
Growth Reduction ◽  
Rice Varieties ◽  
X Ray ◽  
Plasma Irradiation ◽  
Germination And Growth ◽  
Storage Energy

Thailand Plasma Focus 2 (TPF-2) is operated at 2.16 kJ of storage energy with argon as a filled gas and can emit sharp x-ray pulses to plant cells in nanosecond (10-9 s) duration. The effects of plasma focus x-ray on seed germination and seedling growth of 14 Thai rice varieties treated under 10 conditions; 0 (control), 2, 4, 6, 8, 10, 12, 14, 16, and 18 plasma focus shots, were investigated. The results show that the germination rates and growth reduction rates were significantly different among the rice varieties. The germination rate of 10 varieties (Jek Chuey, KDML105, LPT123, PTT1, RD41, RD47, RD49, RD67, RD79, and SPR2) decreased when treated with a high number of plasma focus shots. LD50 and GR50 values were calculated, except for KTH17, RD1, RD7, and RD31 whose germination only slightly decreased, or remained constant, even after they were treated by 18 plasma focus shots. HIGHLIGHTS Effects of plasma focus irradiation on germination and growth were assessed on 14 Thai rice varieties  Shoot and root lengths of rice seedlings were measured 10 days after of plasma treatment Plasma focus was operated at 12 kV and the number of plasma focus shots was varied from 0 (control) to 18 shots Sensitivity to plasma irradiation was found to differ among rice seeds tested GRAPHICAL ABSTRACT

Effects of Biogas Slurry Pretreatment on Germination and Seedling Growth of Vicia faba L.

2014 ◽  
Vol 955-959 ◽  
pp. 208-212 ◽  
Author(s):  
Yan Zhao ◽  
Qing Song Yang ◽  
Shu Yang ◽  
Hong Mei Zhao ◽  
Qing Song Duan ◽  
...  
Keyword(s):  
Seed Germination ◽  
Vicia Faba ◽  
Seedling Growth ◽  
Germination Rate ◽  
Germination Index ◽  
Biogas Slurry ◽  
Seed Soaking ◽  
Germination Potential ◽  
Faba Beans ◽  
Germination And Growth

In order to study the effect of seed soaking with biogas slurry on seed germination and growth of faba beans (Vicia faba L.), the experiment was conducted. The seeds were soaked in biogas slurry for various soaking durations (0, 2, 4, 6 and 8 hours) and different concentration (0, 25, 50, 75 and 100 %) along with control to determine the optimal soaking duration and find out the best growing condition. The highest germination rate, germination potential and germination index were obtained when the faba beans seeds soaked for 4 hours in 75 % biogas slurry. Seedling growth was recorded in plants where seeds soaked for 6 hours in 75 % biogas slurry. It was concluded that the seed soaking of biogas slurry with lower concentration (25, 50 and 75 %) showed best results regarding maximum germination and enhanced growth. However, under the higher concentration (100 %) conditions of biogas slurry had a tendency of decrease on seed germination and seedling growth.

scholarly journals Seed Germination and Growth of Cucumber (Cucumis sativus): Effect of Nano-Crystalline Sulfur

2016 ◽  
Vol 8 (10) ◽  
pp. 219 ◽  
Author(s):  
Luma S. Albanna ◽  
Nidá M. Salem ◽  
Akl M. Awwad
Keyword(s):  
Seed Germination ◽  
Cucumis Sativus ◽  
Seedling Growth ◽  
Spherical Shape ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nano Crystalline ◽  
Germination And Growth ◽  
Scanning Electron

<p>The present paper is focused on green synthesis of high purity sulfur nanoparticles (SNPs) and its effect on seed germination and seedling growth of cucumber (<em>Cucumis sativus</em>). Synthesized SNPs were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy (SEM-EDS). The crystalline size of synthesized SNPs as calculated by Scherer equation was 40 nm. SEM analysis of the SNPs is in spherical shape and with a diameter size between 5-80 nm. In the present study, different concentrations of SNPs were used for the treatment of cucumber seeds to study the effect on bioavailability of seed germination and seedling growth of cucumber. The results of this experiment showed that an increase in concentrations of SNPs had significantly increased seed germination and seedling growth of cucumber.</p>

scholarly journals Impacts of different salt source and concentrations on germination and seedling growth of many pumpkin seeds used as rootstoch in Iran

Genetika ◽  
2012 ◽  
Vol 44 (2) ◽  
pp. 235-250 ◽  
Author(s):  
Ahmad Dadashpour
Keyword(s):  
Electrical Conductivity ◽  
Seed Germination ◽  
Seedling Growth ◽  
Root Length ◽  
Germination Rate ◽  
Shoot Length ◽  
Root Weight ◽  
Pumpkin Seeds ◽  
High Concentrations ◽  
Shoot Weight

The effects of different salt sources (C Cl2, NaCl, and KCl) and concentrations, as measured by electrical conductivity, (0, "control", 1, 3, 5, 7 and 9 dS m-1) on seed germination and seedling growth of ?Ferro?, ?Obez?, ?RS 841? and ?Strong Tosa F1? pumpkin varieties used as rootstock were investigated in this study. The results showed that germination rate, root length, shoot length, fresh root weight, dry root weight, fresh shoot weight and dry shoot weights tend to decrease when the electrical conductivity of the solution is higher than 5 dS m-1, independent of salt sources and in all of the varieties. Three days after seeding, a germination ratio of 5 % was obtained from RS 841 variety in all salt source and concentrations, while a germination ratio over 50 % was obtained in ?Strong Tosa? variety for the same conditions except CaCl2 salt source. Nevertheless, seeds germinated in medium having high concentrations of CaCl2 had lower germination rate and poor seedling growth, compared to media having the same concentrations of NaCl and KCl. It was concluded that all of the varieties studied were more sensitive to the concentrations prepared using CaCl2 than that of the KCl, and NaCl.

scholarly journals Inducing salt tolerance in sweet corn by magnetic priming

2017 ◽  
Vol 109 (1) ◽  
pp. 89 ◽  
Author(s):  
Soheil Karimi ◽  
Saeid ESHGHI ◽  
Saeid KARIMI ◽  
Saman HASAN-NEZHADIAN
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Plant Growth ◽  
Sweet Corn ◽  
Germination Rate ◽  
Nacl Stress ◽  
Proline Accumulation ◽  
Membrane Thermostability ◽  
Germination And Growth ◽  
Magnetic Priming

<p>This study evaluates seed germination and growth of sweet corn under NaCl stress (0, 50, and 100 mM), after exposing the seeds to weak (15 mT) or strong (150 mT) magnetic fields (MF) for different durations (0, 6, 12, and 24 hours). Salinity reduced seed germination and plant growth. MF treatments enhanced rate and percentage of germination and improved plant growth, regardless of salinity. Higher germination rate was obtained by the stronger MF, however, the seedling were more vigorous after priming with 15 mT MF. Proline accumulation was observed in parallel with the loss of plant water content under 100 mM NaCl stress. MF prevented proline accumulation by improving water absorption. Positive correlation between H<sub>2</sub>O<sub>2</sub> accumulation and membrane thermostability (MTI) was found after MF treatments, which revealed that MF primed the plant for salinity by H<sub>2</sub>O<sub>2</sub> signaling. However, over-accumulation of H<sub>2</sub>O<sub>2</sub> after prolonged MF exposure adversely affected MTI under severe salt stress. In conclusion, magnetic priming for 6 hours was suggested for enhancing germination and growth of sweet corn under salt stress.</p>

Allelopathic Effects of Lantana (Lantana camara) on Milkweedvine (Morrenia odorata)

Weed Science ◽  
1984 ◽  
Vol 32 (6) ◽  
pp. 757-761 ◽  
Author(s):  
Nagi Reddy Achhireddy ◽  
Megh Singh
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Percentage ◽  
Lantana Camara ◽  
Test Period ◽  
Percentage Germination ◽  
Allelopathic Activity ◽  
Foliar Symptoms ◽  
Allelopathic Effects ◽  
Germination And Growth

Allelopathic effects of lantana (Lantana camaraL. ♯3LANCA) residues (root, shoot), foliar leachates, and the soil (where lantana was grown) on milkweedvine (Morrenia odorataLindl. ♯3MONOD) seed germination and growth over a 30-day period were examined. Foliar leachates or the soil collected from the field where lantana had been growing had no effect on the final germination percentage or the seedling growth of milkweedvine. Incorporation of dried lantana shoot or root material into soil had no effect on the final percentage germination but caused significant reductions in milkweedvine growth over a 30-day test period. Roots were more inhibitory than shoots. Fifty percent of milkweedvine seedlings died within 15 days after germination at 1% (w/w) dried lantana root incorporation into the soil, and higher concentrations increased seedling death. Lantana roots incorporated into the soil produced foliar symptoms such as wilting and desiccation, whereas lantana shoots incorporated into the soil produced yellowing of the foliage of milkweedvine. Allelopathic activity of lantana residues was still strong even after decomposition of lantana residues for 4 weeks prior to the planting of milkweedvine seeds.

scholarly journals Elucidation of seed dormancy and phytohormones by germination after exogenous foliage whey application

1970 ◽  
pp. 08-14
Author(s):  
Jadhav Rajesh K, Pranay Mulam, Khot Vidhesh
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Seedling Growth ◽  
Rapid Growth ◽  
Germination Rate ◽  
Exogenous Application ◽  
Paper Towel ◽  
Leguminous Seeds ◽  
Growth Of Seedlings ◽  
Leaf Juice

A study was conducted with an aim of achieving 100% seed germination and to evaluate the rate of dormancy upon exogenous application of the deproteinised leaf juice (DPJ) in various leguminous and non leguminous seeds. DPJ if inducing retardation of dormancy, the activity of enzyme was analysed to prove the presence of phytohormones. DPJ from the three non leguminous foliages of brinjal, radddish and dasheen were prepared by green crop fractionation. The seed germination results obtained by the paper towel method and the activity of enzyme protease in DPJ of radish and Colocasia leaves separately. There was variation in germination rate by different DPJ influence. Some seeds showed fast germination while some germinated late. Few seeds were not germinated by control. In some seeds, DPJ decreased the rate of germination while on the contrary there was rapid growth of seedlings by the potentiality of DPJ. DPJ found mutagenic by its influencing inhibitory expression in seedling growth in some cases. The enzyme protease released by phytohormone gibberellin during the seed germination. Positive glyoxlic test indicated presence of auxins in whey.

scholarly journals ​Influence of Temperature and Salinity Stress on Seed Germination and Seedling Growth of Soybean (Glycine max L.)

2021 ◽  
Author(s):  
Mustafa Çirka ◽  
Ali Rahmi Kaya ◽  
Tamer Eryiğit
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Rate ◽  
Petri Dish ◽  
Negative Effects ◽  
Randomized Design ◽  
Salt Level ◽  
Glycine Max L ◽  
Early Seedling ◽  
Lower Temperature

Background: The high salt level of a germinating environment can lead to reduced, delayed, and even complete inhibition of germination and seeding growth due to osmotic action and/or ion toxicity. Based on this viewpoint, the aim of this study was to investigate germination temperature and salinity effects on germination and early seedling growth of soybean, which can be sown as first and second crops. Methods: Soybean seeds were subjected to NaCl induced saline germinating media prepared in petri dishes under two different germination temperatures (20±2 and 25±2oC). Thirty sterilized seeds per petri dish were sown in ten salt treatments (0, 100, 150, 250, 750, 1000, 2250, 5000, 7500 and 10000 ppm NaCl L-1). The study was carried out according to the completely randomized design with four replications. Result: Lower temperature promoted seed germination, while the high temperature significantly inhibited the seed germination at all NaCl doses tested. As a result, 25oC temperatures, which can only be measured at the time of the second sowing, have been found to negatively affect germination and also increase the negative effects of salt. Due to the moderate tolerance of soybeans to salt stress, the germination rate was positively affected up to 750 ppm NaCl L-1 dose and resulted in severe reductions in subsequent doses. Also, the tolerance of soybean was negatively influenced by the interaction of temperature and NaCl concentration.

scholarly journals Transcriptome Analysis Revealed the Regulation of Gibberellin and the Establishment of Photosynthetic System Promote Rapid Seed Germination and Early Growth of Seedling in Pearl Millet

2020 ◽  
Author(s):  
Bingchao Wu ◽  
Min Sun ◽  
Huan Zhang ◽  
Dan Yang ◽  
Chuang Lin ◽  
...  
Keyword(s):  
Seed Germination ◽  
Pearl Millet ◽  
Seedling Growth ◽  
Germination Rate ◽  
Expression Patterns ◽  
Early Growth ◽  
High Yield ◽  
Maintenance Cost ◽  
Key Genes ◽  
Pearl Millet Seeds

Abstract Background：Seed germination is the most important stage for the formation of a new plant. This process starts when the dry seeds begin to absorb water and ends when the radicles sticks out. The germination rate of different plant seeds varies differently. Most energy plants that usually grow on marginal land, the rapid germination of seeds is more conducive to its superiority in competition with surrounding plants, which is also the guarantee of normal plant development and high yield. Pearl millet is an important cereal crop that shares widespread applications in the world. It has the advantages of fast growth, high yield, and low maintenance cost. It can also be used to extract bioethanol to solve the increasingly prominent energy problems. Previous germination experiments are the evidence of very fast seed germination rate of pearl millet, but the molecular mechanisms behind it is still unclear.Results: Through the germination test and the measurement of the germs and radicles length of the seedlings, we found that pearl millet seeds germinated very quickly after 24 hours of swelling of the dry seeds. By using transcriptome sequencing technology, we characterized the gene expression patterns of dry seeds, water imbibed seeds, germs and radicles of seedlings, and found the more DEGs in radicles than germs. Further analysis showed that different genome clusters function specifically at different tissues and time periods. WGCNA and KEGG enrichment analysis showed that that many genes that positively regulate plant growth and development are highly enriched and expressed, especially the gibberellin signaling pathway that can promote seed germination. We speculated that the activation of these key genes promotes the germination of pearl millet seeds and the growth of seedlings. To verify this inference, we measured the content of the main effect hormone gibberellin and found that the gibberellin content after seed imbibition rose sharply and remained at a high level.Conclusions：This study explored the expression patterns of genes involved in pearl millet growth from the germination of dry seeds to the early growth stages. Also identifies the key genes involved in the regulation of seed germination and seedling growth. The activation of key genes in these pathways may contribute to the rapid germination and growth of seeds and seedlings in pearl millet. These results provide new insights to solve the problem for the plants with slow seed germination and seedling growth.

scholarly journals Microbial inoculant influences the germination and growth of Albizia lebbeck seedlings in the nursery

2016 ◽  
Vol 26 (1) ◽  
pp. 82-89
Author(s):  
B. M. Khan ◽  
M. A. Kabir ◽  
M. K. Hossain ◽  
M. A. U. Mridha
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Volume Index ◽  
Cow Dung ◽  
Albizia Lebbeck ◽  
Positive Role ◽  
Total Pigment ◽  
Vigor Index ◽  
Collar Diameter ◽  
Germination And Growth

Microbial inoculants (MI), a biofertilizer, composed of many different beneficial microorganisms has positive role on seed germination and growth of plants. In the present study, its efficacy on seed germination and seedling growth of Albizia lebbeck in the nursery was studied. The seeds were sown in polybags filled with a mixture of forest soil and cow dung (3:1) and treated with 0.1%, 0.5%, 1%, 2%, 5% and 10% concentrations of MI. Most of the parameters studied (seed germination, shoot and root lengths, dry weights of shoot and root, collar diameter, leaf number etc) were found maximum in 2% of MI . Although the highest vigor index, volume index and quality index (7053, 3738 and 1.106, respectively) were found in 2% MI, but the highest sturdiness (65.95) was found in 1% MI solution. The nodule number was higher at a very low (0.5%) concentration of MI but it normally decreased with the increase of concentration. Total pigment content in leaf was recorded highest (112.86 mg.L-1) in 2% of MI. Therefore, MI influences seed germination and seedling growth of A. lebbeck and the low concentration (2%) of the inoculant can be recommended for getting maximum seed germination and seedling growth of the species studied.Banko JanakariA Journal of Forestry Information for NepalVol. 26, No. 1, Page: 82-89, 2016

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