scholarly journals Effects of the electromagnetic field of Wi-Fi systems and experimental gadget M4 on growth, development and photosynthesis of wheat

2020 ◽  
Vol 85-86 ◽  
Author(s):  
J. Roche ◽  
N.P. Didyk ◽  
B.O. Ivanytska ◽  
N.V. Zaimenko ◽  
O.O. Chudovska
Keyword(s):  
Electromagnetic Field ◽  
Seed Germination ◽  
Root Length ◽  
Negative Impact ◽  
Lateral Roots ◽  
Photosynthetic Pigment ◽  
Morphometric Parameter ◽  
Test Plant ◽  
Shoot Height ◽  
Juvenile Plants

Objectives. To assess the effects of the electromagnetic field of a Wi-Fi system and the experimental gadget M4 developed by SAS “IRDT” (France) on wheat seed germination, growth and photosynthetic activity of juvenile plants. Material and methods. The test-plants were grown under controlled conditions of light, temperature and humidity for 8 days in a pot experiment modeling the following treatments: (1) the absence of electromagnetic field of Wi-Fi systems (control); (2) at a distance of 30 cm from the operating Wi-Fi router; (3) at a distance of 30 cm from operating Wi-Fi router and the experimental gadget M4. The test plant development and vitality were assessed using indices of seed germination, growth rates (shoot height, root length, number of lateral roots, shoot and root dry weights), photosynthetic pigment content in leaves and the number of chloroploplasts per a mesophyll cell in foliar tissues. Results. It was found that the electromagnetic field of Wi-Fi router initially stimulated, but then suppressed the germination of seeds, reduced the growth of shoots and roots, the content of photosynthetic pigments and chloroplastogenesis in the mesophyll tissues in leaves of wheat juvenile plants. The root length was the most sensitive morphometric parameter to the electromagnetic field of Wi-Fi router. The use of the gadget M4 completely compensated the negative impact of Wi-Fi router on the seed germination, shoots growth, and partially compensated for the suppression of root growth, chloroplastogenesis, chlorophyll a and b content in wheat leaves. Conclusion. The attenuation effect of gadget M4 against the damaging effect of electromagnetic fields of anthropogenic origin is promising and further investigations are required to observe the effects on long term, from sowing to maturity, including the next generation of seeds.

scholarly journals EFFECT OF COLD STRATIFICATION ON SEED GERMINATION OF THE MULTIPURPOSE FRUIT SHRUB, ZIZIPHUS LOTUS (L.) LAM. (RHAMNACEAE)

2020 ◽  
Vol 53 (2) ◽  
pp. 152-159
Author(s):  
A. KHELOUFI ◽  
L. M. MANSOURI ◽  
K. LAIB
Keyword(s):  
Seed Germination ◽  
Root Length ◽  
Germination Percentage ◽  
Seed Morphology ◽  
Cold Stratification ◽  
Shoot Height ◽  
Moist Sand ◽  
Naturally Occurring ◽  
Seedling Length ◽  
Plastic Containers

Shrubs and trees of the genus Ziziphus are a good example of naturally occurring multipurpose plant species with great potential in arid regions. This study was conducted to investigate the effect of cold stratification on seed germination and seedling growth of Ziziphus lotus (L.) Lam. Seeds were subjected to 0, 45, 90 and 120 days of cold stratification at 5°C. We also examined fruit, kernel and seed morphology. For each treatment period, four replicates of 50 seeds were incubated in plastic containers between two layers of moist sand at 15% and under greenhouse conditions for 15-day period. At the end of the experiment, the final germination percentage (FGP), shoot length and root length were assessed. The results clearly indicated that increasing duration of cold stratification improved seed germination. The most effective stratification period was 120 days where Z. lotus recorded 83% of FGP and 16.5 cm of total seedling length. Cold stratification treatments significantly increased shoot height, root length, as well as seedling total length. 120 days stratification treatment resulted in the highest shoot and root length (6.80 cm and 9.75 cm, respectively). An overview on the emergence of Z. lotus seedlings during a 15-day period was also illustrated.

scholarly journals Effects of simulated microgravity on seed germination, growth, development and accumulated secondary compounds of Hibiscus sagittifolius Kurz. cultured in vitro

2018 ◽  
Vol 15 (1) ◽  
pp. 73-85
Author(s):  
Dương Tấn Nhựt ◽  
Nguyễn Xuân Tuấn ◽  
Nguyễn Thị Thùy Anh ◽  
Nguyễn Bá Nam ◽  
Nguyễn Phúc Huy ◽  
...  
Keyword(s):  
Seed Germination ◽  
Secondary Metabolites ◽  
Root Length ◽  
Growth And Development ◽  
Simulated Microgravity ◽  
Shoot Multiplication ◽  
Dry Weight ◽  
Plant Materials ◽  
Shoot Height ◽  
Growth Development

In the present study, Hibiscus sagittifolius Kurz. seeds were used as the plant materials for studying on the effects of simulated microgravity (on a 2D clinostat) on seed germination, shoot multiplication, growth, development and secondary metabolite accumulation. After surface sterilization, seeds were cultured on MS medium supplemeted with 30 g/l sucrose and 9 g/l agar in Petri dishes (9 seeds per dish, the seed to seed distance of 1.5 cm and kept in the same direction), and maintained in a Clinostat (2 rpm). The results showed that simulated microgravity inhibited the growth and development of Hibiscus sagittifolius roots with root length of 11.83 cm, fresh and dry weight of 58.28 and 5.23 mg, respectively but it made an increase in germination rate (87%) and accumulation of secondary metabolites (the total saponins content of 53.00 mg/g and the total coumarin content of 25.67 mg/g) after 3 weeks of culture. In addition, the simulated microgravity also resulted in positive shoot multiplication (shoot height of 3.07 cm, 6.33 nodes per shoot, 3.33 shoots per explant, and the fresh and dry weight of 401.33 and 37.00 mg, respectively), and growth and development of Hibiscus sagittifolius shoots (plant height of 12.17 cm with 5.67 leaves per shoot together with the average root length of 1.77 cm, and the fresh and dry weight of 419.00 and 36.00 mg) after 4 weeks of culture. The results from this study could be attributed to future perspectives in research on plant breeding and accumulation of secondary metabolites in medicinal plants.

scholarly journals Non-TZF Protein AtC3H59/ZFWD3 Is Involved in Seed Germination, Seedling Development, and Seed Development, Interacting with PPPDE Family Protein Desi1 in Arabidopsis

2021 ◽  
Vol 22 (9) ◽  
pp. 4738
Author(s):  
Hye-Yeon Seok ◽  
Hyungjoon Bae ◽  
Taehyoung Kim ◽  
Syed Muhammad Muntazir Mehdi ◽  
Linh Vu Nguyen ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Development ◽  
Zinc Finger ◽  
Root Length ◽  
Primary Root ◽  
Seedling Development ◽  
Ccch Zinc Finger ◽  
Family Protein ◽  
Wd40 Domain ◽  
Primary Root Length

Despite increasing reports on the function of CCCH zinc finger proteins in plant development and stress response, the functions and molecular aspects of many non-tandem CCCH zinc finger (non-TZF) proteins remain uncharacterized. AtC3H59/ZFWD3 is an Arabidopsis non-TZF protein and belongs to the ZFWD subfamily harboring a CCCH zinc finger motif and a WD40 domain. In this study, we characterized the biological and molecular functions of AtC3H59, which is subcellularly localized in the nucleus. The seeds of AtC3H59-overexpressing transgenic plants (OXs) germinated faster than those of wild type (WT), whereas atc3h59 mutant seeds germinated slower than WT seeds. AtC3H59 OX seedlings were larger and heavier than WT seedlings, whereas atc3h59 mutant seedlings were smaller and lighter than WT seedlings. Moreover, AtC3H59 OX seedlings had longer primary root length than WT seedlings, whereas atc3h59 mutant seedlings had shorter primary root length than WT seedlings, owing to altered cell division activity in the root meristem. During seed development, AtC3H59 OXs formed larger and heavier seeds than WT. Using yeast two-hybrid screening, we isolated Desi1, a PPPDE family protein, as an interacting partner of AtC3H59. AtC3H59 and Desi1 interacted via their WD40 domain and C-terminal region, respectively, in the nucleus. Taken together, our results indicate that AtC3H59 has pleiotropic effects on seed germination, seedling development, and seed development, and interacts with Desi1 in the nucleus via its entire WD40 domain. To our knowledge, this is the first report to describe the biological functions of the ZFWD protein and Desi1 in Arabidopsis.

Allelopathic Potency and an Active Substance from Hairy Vetch

2020 ◽  
Author(s):  
Weihong Sun ◽  
Guofeng Yang ◽  
Lili Cong ◽  
Juan Sun ◽  
Lichao Ma
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Root Length ◽  
Leaf Extract ◽  
Growth Inhibitor ◽  
Inhibitory Effect ◽  
Allelopathic Effect ◽  
Coumaric Acid ◽  
Hairy Vetch ◽  
Allelopathic Effects

Background: Plant allelopathy refers to the release of chemicals from plants or microorganisms into the environment, may have direct or indirect, beneficial or harmful effects on other plants or microorganisms. When plants grow in an unfavorable environment,more allelochemicals will be secreted and the expression of allelopathic effects will increase, giving plants a certain competitive advantage. Hairy vetch is one of the most promising allelopathic crops and the aqueous extract of hairy vetch has an inhibitory effect on the root length and seedling height of grass crops. The current study aimed to study the allelopathic effect of hairy vetch on alfalfa, and exploring an ecological method to remove the root system of alfalfa.Methods: In this experiment, the allelopathic effects of the seeds, stems and leaves, roots extracts and root exudates (0, 3, 6, 9 and 12 mg·mL-1) on the seed germination and seedling growth of alfalfa were evaluated. And the main allelopathic substances from the stem and leaf extract were isolated and identified using high performance liquid chromatography- mass spectrometry (HPLC-MS).Result: The results showed that all of the extracts can inhibit alfalfa seed germination and seedling growth and stem and leaf extract had the strongest inhibitory effect, especially for inhibiting the root growth. A main allelochemical substance, o-coumaric acid, was screened out and the root length of alfalfa was completely inhibited at 1.6 mg·mL-1 of o-coumaric acid. The findings of these experiments show hairy vetch has strong allelopathic effect on alfalfa and o-coumaric acid is a chemical growth inhibitor.

Effect of Composting, Leaching and Carbonizing on Alleviating Phytotoxicity of Sewage Sludge

2012 ◽  
Vol 518-523 ◽  
pp. 1733-1736
Author(s):  
Hong Cai ◽  
Yi Bo Wen ◽  
Ji Li
Keyword(s):  
Seed Germination ◽  
Sewage Sludge ◽  
Adverse Effects ◽  
Root Length ◽  
Germination Rate ◽  
Germination Index ◽  
Pretreatment Method

Sewage sludge (SS) contains deleterious constituents that strongly inhibited seed germination. Pretreatment methods of composting, leaching and carbonizing were thus evaluated to alleviate the phytotoxicity. All the pretreatments improved germination rate, root length and germination index of radish seeds. The best performances were presented by composting pretreatment and the pretreatment of carbonizing plus leaching. Composting greatly alleviated phytotoxicity of SS and improved seed germination, however, it also showed stunted root length and germination index compared with the soil control. The adverse effects of composted SS on seed germination were completely eliminated by leaching, while carbonizing had little effect on reversing the stunt. These results indicated that the most effective pretreatment method to alleviate phytotoxicity of SS were composting plus leaching.

Effect of lead stress on the growth and metabolism of Eruca sativa M. seedlings

2005 ◽  
Vol 53 (3) ◽  
pp. 319-327 ◽  
Author(s):  
F. A. Faheed
Keyword(s):  
Seed Germination ◽  
Root Length ◽  
Dry Matter ◽  
Lead Concentration ◽  
Amino Acid Content ◽  
Proline Content ◽  
Growth Inhibitors ◽  
Eruca Sativa ◽  
Free Amino Acid Content ◽  
Harmful Effects

Among the toxic elements, lead has great importance because of its harmful effects on animal and human health. Heavy metals are known as growth inhibitors and consequently exhibit toxicity symptoms in plants. The effect of different concentrations of lead on seed germination, seedling growth and some metabolites of Eruca sativa plants was examined. The percentage of seed germination gradually decreased with an increase in the lead concentration. A considerable reduction in fresh and dry matter as well as shoot and root length was obtained as a result of increasing lead concentration. Among these parameters, total root length was a more sensitive parameter than shoot length at every lead concentration. The proline content increased, in most cases, with increasing lead concentration. The same trend was observed for the free amino acid content. Soluble protein generally increased with an increase in lead concentration. In contrast, the total protein gradually decreased as the lead concentration increased, particularly at the highest levels used.

scholarly journals AVOCADO SEEDLINGS MULTIPLE STEMS PRODUCTION

2016 ◽  
Vol 38 (2) ◽  
Author(s):  
MARCUS VINICIUS SANDOVAL PAIXÃO ◽  
JOSÉ CARLOS LOPES ◽  
EDILSON ROMAIS SCHMILDT ◽  
RODRIGO SOBREIRA ALEXANDRE ◽  
CAROLINE MERLO MENEGHELLI
Keyword(s):  
Root Length ◽  
Dry Weight ◽  
Adventitious Rooting ◽  
Dry Mass ◽  
Stem Diameter ◽  
Experimental Unit ◽  
Shoot Height ◽  
Shoot Dry Weight ◽  
Federal Institute ◽  
Multiple Stems

ABSTRACT This study aimed to evaluate the potential of multi-stems in avocado seeds according to their mass as well as the adventitious rooting of multi-stem budding with or without the use of auxin. The research was carried out at the Vegetation House of Federal Institute of Espírito Santo, Campus Santa Teresa -ES, with seeds of different masses: <60 g, 61 to 80 g, 81 to 100 g and >100 g, in which each experimental unit was made of five seeds, distributed within five repetitions, under a completely randomized design. The seeds were put to germinate and the percentage number of emergence and multiple stems were evaluated. After 150 days, the following evaluations were carried out: survival of rooted cuttings; number of leaves; stem diameter; root length; root volume; root and shoot fresh mass; root and shoot dry mass; shoot height; absolute growth and shoot growth rate; shoot dry weight/root dry mass ratio; shoot height/stem diameter ratio; shoot height/root length and Dickson's quality index ratio. Avocado seeds with mass over 100 g and between 81-100 g presented higher percentage of multiple stems. Rods over 20 cm that were not treated with IBA (indole-3-butyric acid) resulted on avocado plants of better quality. The use of IBA (2000 mg L-1) does not affect the rooting and growth of avocado's multi-stem plants.

scholarly journals The Influence Of Zinc On Seed Germination And Growth In The First Ontogenetic Stages In The Species Cucumis Melo L.

2015 ◽  
Vol 9 (2) ◽  
pp. 215-228 ◽  
Author(s):  
Anişoara Stratu ◽  
Naela Costică
Keyword(s):  
Seed Germination ◽  
Cucumis Melo ◽  
Growth Process ◽  
Lateral Roots ◽  
Tolerance Index ◽  
High Concentration ◽  
Seedling Vigour ◽  
Ontogenetic Stages ◽  
Vigour Index ◽  
Germination And Growth

AbstractThe paper presents the results of a study regarding the influence of treatment with zinc in different concentrations (50 mg∕l, 100 mg∕l, 200 mg ∕l, 300mg/l, 400 mg ∕l, 500 mg/l, 600 mg ∕l) on seed germination and growth in early ontogenetic stages ofCucumis meloL. We analyzed the following indicators: the percentage of germinated seeds; the length of root, the length of the hypocotyl and the length of the seedling; the number of the laterale roots; the tolerance index and the seedling vigor index. The results underline the specific variations of analysed indicators, depending on the concentrations used for the treatments of seeds. The concentrations used for treatment do not influence negatively the seed germination, but affected the seedling growth (especially the root elongation), the formation and growth process of lateral roots and the seedling vigour index. The delay effect of growth process is very pronounced in the case of high concentration.

scholarly journals Growth of mango (Mangifera indica L.) rootstocks as influenced by pre-sowing treatments

2017 ◽  
Vol 9 (1) ◽  
pp. 582-586
Author(s):  
R. J. Patel ◽  
T. R. Ahlawat ◽  
A. I. Patel ◽  
J. J. Amarcholi ◽  
B. B. Patel ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Root Length ◽  
Mangifera Indica ◽  
Lateral Roots ◽  
Weight Ratio ◽  
Dry Weight ◽  
Shoot Length ◽  
Shoot Dry Weight ◽  
Survival Percentage ◽  
Total Dry Weight

An experiment was carried out at Navsari Agricultural University, Navsari during 2014 to evaluate the effect of pre-sowing treatments on survival percentage and growth of mango rootstocks. Mango stones were soaked in aqueous solutions of GA3 (100 and 200 ppm), Beejamruth (2 % and 3 %) and Thiourea (1 % and 2 %) for 12 and 24 hours. The trial was evaluated in Completely Randomized Design based on factorial concept and the treatments were replicated thrice. Imposition of treatments led to significant differences at 5 % level of significance for all parameters chosen in this study. Mango stones when treated with Thiourea at 1 % had the maximum shoot length (49.93 cm), root length (34.38 cm), shoot dry weight (21.08 g) and total dry weight (26.36 g). The highest number of lateral roots (10.90) and survival percentage (64.17) was observed in mango stones dipped in 100 ppm GA3. Between the two soaking duration, soaking mango stones for 24 hours recorded higher values for shoot length (45.03 cm), root length (32.79 cm), number of lateral roots (9.83), survival percentage (62.72), shoot root fresh weight ratio (4.30), shoot dry weight (21.33 g), total dry weight (26.28 g) and shoot root dry weight ratio (4.32). Thus, survival percentage and growth of mango rootstocks can be substantially improved by soaking mango stones in aqueous solutions of 100 ppm GA3 or Thiourea at 1 % for 24 hours before sowing.

scholarly journals IDENTIFICATION OF DROUGHT TOLERANT WHEAT GENOTYPES UNDER WATER DEFICIT CONDITIONS

2016 ◽  
Vol 4 (2) ◽  
pp. 206-214 ◽  
Author(s):  
Zaid Chachar ◽  
N. A. Chachar ◽  
Q.I. Chachar ◽  
S.M Mujtaba ◽  
G.A Chachar ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Germination ◽  
Osmotic Stress ◽  
Root Length ◽  
Dry Weight ◽  
Shoot Length ◽  
Wheat Genotypes ◽  
Maximum Reduction ◽  
Drought Tolerant

Climate change is emerging phenomena and causing frequent drought which lead to scaricity of water, which ultimately nagetively affecting wheat (Triticumaestivum L.) yield all around the world. The aim of this study was to explore the potential deought tolerant wheat genotypes for candidate genes exploration. This study was conducted during the year 2014-2015 at Plant Physiology Division, Nuclear Institute of Agriculture (NIA) Tandojam. The six wheat genotypes (cv. MT-1/13, MT-2/13, MT-3/13, MT-4/13 Chakwal-86 and Khirman) were investigated for their response at germination and seedling stage under different water stress treatments (0, -0.5, -0.75 and -1.0 MPa) in controlled conditions. The results of experiments with reference to genotypes revealed that genotype Chakwal-86 shows maximum seed germination (82.58 %), while the genotype Khirman shows maximum shoot length  (7.23 cm), root length  (15.1 cm), shoot fresh wt. (5.85 g 10-1shoots), root fresh wt.  (3.45 g 10-1roots), shoot dry wt. (1.33 g 10-1shoots), root dry wt. (0.69 g 10-1roots). Among the genotypes tested Khirman and MT-4/13 are the tolerant genotypes had the potential to perform better under drought conditions, whereas  MT-4/13 and Chakwal-86 were moderate tolerant under water stress conditions. Moreover, the genotypes i.e. MT-1/13 and MT-2/13 are the sensitive genotypes under drought environment. It is concluded from present in-vitro studies that osmotic stress significantly reduced the seed germination shoot/root length fresh and dry weight in all six wheat genotypes. The maximum reduction was found at higher osmotic stress induced by PEG-6000 (-1.0 MPa) significantly.

Sign in / Sign up

Export Citation Format

Share Document