scholarly journals Effect Of Pre-Sowing Seed Treatments With Silicon Nanoparticles On Germinability Of Sunflower (Helianthus Annuus)

2015 ◽  
Vol 21 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Mohsen Janmohammadi ◽  
Naser Sabaghnia
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Crop Production ◽  
Silicon Nanoparticles ◽  
Seedling Emergence ◽  
Seedling Vigour ◽  
Seed Soaking ◽  
Positive Effects ◽  
Nano Silicon ◽  
Sowing Seed

AbstractSilicon is one of the most widespread macro elements that have beneficial effects on plant growth. Although its positive effects on plant growth and development have been widely considered, little information is available about possibility of nano-silicon utilization in seed invigoration treatments. Enhanced seed germination may lead to improved stand establishment and it can play important role in successful crop production. Partial hydration of the seeds followed by dehydration in a controlled environment often results in rapid seed germination and more uniform seedling emergence compared to untreated seeds. In the present study, the effect of seed soaking in different concentration nano-silicon solutions (0, 0.2, 0.4, 0.6, 0.8, 1 and 1.2 mM for 8 h) on germination characteristics of sunflower was investigated. Seed soaking in low concentration nano-silicon solutions (0.2 and 0.4 mM) significantly reduced days to 50% germination and mean germination time and improved root length, mean daily germination, seedling vigour index and final germination percentage. These results suggest that the incorporation of nano-silicon in priming solution, in an appropriate concentration, remarkably enhances germination performance and causes an effective invigoration of the seedling. These results underline the importance of pre-sowing seed soaking in diluted nano-silicon solutions for improving the germinability of sunflower.

scholarly journals Effect of pre-sowing treatment on seed germination and seedling vigour in endive and chicory

2009 ◽  
Vol 36 (No. 3) ◽  
pp. 117-125 ◽  
Author(s):  
G. Tzortzakis N
Keyword(s):  
Seed Germination ◽  
Essential Oil ◽  
Plant Growth ◽  
Seedling Emergence ◽  
Fresh Weight ◽  
Seedling Vigour ◽  
Gibberelic Acid ◽  
Mean Germination Time ◽  
The Mean

The influence of pre-sowing treatments using hydropriming, osmopriming and halopriming in laboratory and/or nursery tests on seedling emergence, seedling weight and plant growth of endive and chicory was examined. Halopriming (KNO<sub>3</sub>) or growth regulators (gibberelic acid; GA<sub>3</sub>) improved the rate of germination of endive and chicory and reduced the mean germination time needed. 30 min pre-sowing treatment with NaHClO<sub>3</sub>, methyl jasmonate and dictamus essential oil decreased seed germination as well as seed radicle length in vitro. In the nursery tests, pre-sowing treatments had in some extent impact on the upper part (fresh weight) of the seedling, while no major changes were observed for leaf number and root fresh weight. 6-benzylaminopurine (BAP) or NaHClO<sub>3</sub> treatment reduced plant growth of both species. The present study suggests that KNO<sub>3</sub> and secondly GA<sub>3</sub> treatments may improve rapid and uniform seedling emergence and plant development in nurseries and/or in greenhouses, which is easily applicable by nursery workers with economic profits.

Growth regulators restore germination of Orobanche seeds that are conditioned under water stress and suboptimal temperature

2006 ◽  
Vol 57 (11) ◽  
pp. 1195 ◽  
Author(s):  
W. J. Song ◽  
W. J. Zhou ◽  
Z. L. Jin ◽  
D. Zhang ◽  
K. Yoneyama ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Germination ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Crop Production ◽  
Combined Treatments ◽  
Suboptimal Temperature ◽  
Germination Stimulant ◽  
Positive Effects

Broomrapes (Orobanche spp.) are serious root parasitic weeds that cause great damage to crop production in many parts of the world. The study focussed on the influence of plant growth regulators on germination of Orobanche seeds conditioned under suboptimal temperature (at 13°C) and under water stress (at –1 and –2 MPa). Three widely distributed species of broomrapes (O. aegyptiaca, O. ramosa, and O. minor) were used in the experiments. Exogenous GA3 (10 mg/L), brassinolide (1 mg/L), and fluridone (10 mg/L) significantly increased the broomrape seed response to the germination stimulant GR24 (10–6 m) even when seeds were first conditioned at a suboptimal temperature and under water stress. The highest germination was obtained when the combined treatments with fluridone and brassinolide, or with GA3 and brassinolide were applied together with the germination stimulant. This indicates that there were additive effects among various plant growth regulators in the regulation of germination response in Orobanche seeds. With the prolongation of conditioning periods under low temperature stress, the restoration capacities of seed germination by a single growth regulator decreased, but the combined treatments of growth regulators retained their positive effects in restoring seed germination.

scholarly journals Effects of Different Priming Treatments on Seed Germination Properties, Yield Components and Grain Yield of Lentil (Lens culinaris Medik.)

2015 ◽  
Vol 43 (1) ◽  
pp. 153-158 ◽  
Author(s):  
Faruk TOKLU
Keyword(s):  
Seed Germination ◽  
Grain Yield ◽  
Yield Components ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Yield Component ◽  
Field Conditions ◽  
Distilled Water ◽  
Peg 6000 ◽  
Positive Effects

An experiment was conducted under laboratory and field conditions in order to evaluate the effects of different priming treatments, specifically KNO3 (1%), KCl (2%), KH2PO4 (1%), ZnSO4 (0.05%), PEG-6000 (20%), IBA (100 ppm), Mannitol (4%), GA3 (100 ppm) and distilled water, on seed germination properties and several agro-morphological plant characteristics of red lentil. Seeds not primed were used as a control. GA3 treatment increased shoot length. The control (non-primed seeds) treatment resulted in increased seedling root number and length. Distilled water, ZnSO4 and control treatments increased germination rate and percentage. In the pot experiments, GA3 treatment increased plant height and seedling emergence rate, whereas KCl treatment improved the number of nodules, as well as root and shoot dry weight when compared to the control. ZnSO4 treatment increased yield components and grain yield in field conditions. The results of this study showed that ZnSO4, GA3 and PEG-6000 seed priming treatments may be useful tools due to their positive effects on germination rate, germination percentage, yield component and grain yield of lentil.

Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells

2019 ◽  
Vol 95 (11) ◽  
Author(s):  
Isha Hashmi ◽  
Christophe Paul ◽  
Andrej Al-Dourobi ◽  
Frederic Sandoz ◽  
Priscilla Deschamps ◽  
...  
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Positive Impact ◽  
Growth Promotion ◽  
Soil Microbial Communities ◽  
Vegetative Cells ◽  
Single Strain ◽  
Positive Effects ◽  
Pot Experiments

ABSTRACT The effect of three plant growth-promoting Bacillus strains inoculated either alone or as a consortium was tested on oat (Avena sativa) growth. The bioinoculants were applied as vegetative cells or endospores at low cell densities on the seeds and their effect was tested in sterile in vitro conditions, pot experiments, and a field trial. The in vitro seed germination assay showed that both individual bacterial inocula and bacterial consortia had positive effects on seed germination. Greenhouse pot experiments with sterile and non-sterile soil showed that consortia increased the total dry biomass of oat plants as compared to single strain inoculation and uninoculated controls. However, the positive impact on plant growth was less prominent when the bioinoculated strains had to compete with native soil microbes. Finally, the field experiment demonstrated that the consortium of vegetative cells was more efficient in promoting oat growth than the endospore consortium and the uninoculated control. Moreover, both consortia successfully colonized the roots and the rhizosphere of oat plants, without modifying the overall structure of the autochthonous soil microbial communities.

scholarly journals Studies on plasma treatment and priming of seeds of bell pepper (Capsicum annuum L.)

2017 ◽  
Vol 9 (3) ◽  
pp. 1505-1509 ◽  
Author(s):  
Cherry Nalwa ◽  
Ashok K. Thakur ◽  
Amit Vikram ◽  
R. Rane ◽  
A. Vaid
Keyword(s):  
Seed Germination ◽  
Plasma Treatment ◽  
Capsicum Annuum ◽  
Cold Plasma ◽  
Bell Pepper ◽  
Oxygen Plasma Treatment ◽  
Seedling Vigour ◽  
Positive Effects ◽  
Capsicum Annuum L ◽  
Comparison Results

The present investigation was carried out at Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan during the year 2014 -2015 to study the “Effect of cold plasma treatment and priming on bell pepper (Capsicum annuum L. cultivar California Wonder) for seed germination and seedling vigour. The seeds were ex-posed to various durations of oxygen plasma treatment using glow discharge technique at FCIPT, Institute for Plas-ma Research, Gandhinagar, Gujarat, India. Seeds were pre-treated with power of 100 W for treatment durations of 0, 3, 6, 9, 12, 15 minutes for 0, 4, 8 and 12 month durations. The changes in surface morphology of plasma treated seeds were studied by Scanning Electron Microscopy (SEM) and Contact Angle Goniometer. Along with plasma treatment, seeds were also treated with standard priming method i.e osmoprimng for comparison. Results showed that plasma treatment alone as well as in combination with osmoprimng up to 6 minutes duration had positive effects on seed germination and seedling vigour. Germination and vigour indices significantly increased by 21.75% and 90.71% respectively. Characteristics of germination percentage, speed of germination, seedling vigour index-I & II, significantly increased by 13.92%, 1.39 cm, 0.38 mg, 322.07 respectively, compared with control. And it was found that immediately after plasma exposure the germination (84.41%) and vigour (228.50) was highest and it was reduced to (73.54%) and (174.27) after 12 months of storage. These results indicated that cold plasma treatment might promote the growth and modify the speed of germination i.e. higher speed of germination was observed in seeds exposed to plasma treat-ment for 6 minutes (59.82%), whereas, lowest germination speed (40.76%) was observed in untreated control.

scholarly journals Effects of Halophyte Root Exudates and Their Components on Chemotaxis, Biofilm Formation and Colonization of the Halophilic Bacterium Halomonas Anticariensis FP35T

2020 ◽  
Vol 8 (4) ◽  
pp. 575
Author(s):  
Inmaculada Sampedro ◽  
Daniel Pérez-Mendoza ◽  
Laura Toral ◽  
Esther Palacios ◽  
César Arriagada ◽  
...  
Keyword(s):  
Plant Growth ◽  
Root Exudates ◽  
Plant Growth Promotion ◽  
Biofilm Formation ◽  
Crop Production ◽  
Positive Impact ◽  
Growth Promotion ◽  
Halophilic Bacteria ◽  
Plant Growth Promoting Bacteria ◽  
Positive Effects

Increase in soil salinity poses an enormous problem for agriculture and highlights the need for sustainable crop production solutions. Plant growth-promoting bacteria can be used to boost the growth of halophytes in saline soils. Salicornia is considered to be a promising salt-accumulating halophyte for capturing large amounts of carbon from the atmosphere. In addition, colonization and chemotaxis could play an important role in Salicornia-microbe interactions. In this study, the role of chemotaxis in the colonization of the halophilic siredophore-producing bacteria, Halomonas anticariensis FP35T, on Salicornia hispanica plants was investigated. The chemotactic response of FP35T to Salicornia root exudates showed optimum dependence at a salt concentration of 5 % NaCl (w/v). Oleanolic acid, the predominant compound in the exudates detected by HPLC and identified by UPLC-HRMS Q-TOF, acts as a chemoattractant. In vitro experiments demonstrated the enhanced positive effects of wild-type H. anticariensis strain FP35T on root length, shoot length, germination and the vigour index of S. hispanica. Furthermore, these positive effects partially depend on an active chemotaxis system, as the chemotaxis mutant H. anticariensis FP35 ΔcheA showed reduced plant growth promotion for all the parameters tested. Overall, our results suggest that chemotaxis responses to root exudates play an important role in interactions between Salicornia and halophilic bacteria, enhance their colonization and boost plant growth promotion. Preliminary results also indicate that root exudates have a positive impact on H. anticariensis FP35T biofilm formation under saline conditions, an effect which totally depends on the presence of the cheA gene.

scholarly journals The Effects of Condensed Molasses Soluble on the Growth and Development of Rapeseed through Seed Germination, Hydroponics and Field Trials

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 260
Author(s):  
Shuang Li ◽  
Xinghai Zhao ◽  
Xiangsheng Ye ◽  
Limei Zhang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Root Development ◽  
Growth And Development ◽  
Crop Production ◽  
Plant Biomass ◽  
Organic Fertilizer ◽  
Field Trials ◽  
High Concentration ◽  
Sod Activity

Condensed molasses soluble (CMS) has been reported to be rich in mineral nutrients and organic matter. However, the potential of CMS as a new organic fertilizer for crops is poorly understood. In this study, we explored the effects of CMS on seed germination, plant growth and field production of Brassica napus through seed germination, hydroponics and field trials. The results demonstrated that a small amount of CMS (0.05 g L−1) on the basis of normal nutrient supply significantly increased plant biomass, root vigor and root development, and improved the superoxide dismutase (SOD) activity of shoot at the seedling growth stage. Nevertheless, a high concentration of CMS (0.2 g L−1) inhibited plant growth, root development, the activities of peroxidase (POD) and catalase (CAT), and elevated accumulation of malondialdehyde (MDA) in the shoot at the same stage. In the field, exogenous application of CMS as well as chemical fertilizers increased seed yield up to 20% compared with chemical fertilization only. Collectively, our results conclude that the appropriate amount of CMS could promote the growth and development of rapeseed at both seedling and mature stages. Hence, CMS may be used as a new potential organic fertilizer for crop production in the future.

APPLICATION OF ORGANIC ACIDS AND ITS MIXTURES AS A STIMULATOR OF SEED GERMINATION

1970 ◽  
pp. 31-34 ◽  
Author(s):  
Yu. A. Chursinov ◽  
E. S. Kovaleva
Keyword(s):  
Seed Germination ◽  
Organic Acids ◽  
Crop Production ◽  
Crop Yields ◽  
Scientific Work ◽  
Agricultural Technologies ◽  
Seed Material ◽  
Production Technologies ◽  
Sowing Seed ◽  
Productivity Potential

The intensification of the germination of seed material of different crops is a promising direction for improving agricultural technologies. The use of safe and highly effective germination activators allows to accelerate the biological processes of plant growth, to reveal the productivity potential inherent in each variety. Increasing the rates, such as energy and germination, significantly increase crop yields. The scientific work objective was to expand the range of universal crop growth stimulants that would be able to provide uniform germination, increased energy and the ability to germinate seed material, as well as shorten the period from sowing to seedlings. The use of organic acids is proposed: nicotinic (3-pyridinecarboxylic), folic (pteroylglutamic), succinic (butanedioic) with a given concentration of active substances. This technological solution allows to intensify the processes of seed germination of various crops. The presented organic acids and their solutions are recommended to be used in pre-sowing treatment of seeds by spraying or one-time soaking in aqueous solutions of these acids. The studies were carried out on the base of the scientific and production laboratory for determining the quality of grain and grain products of the Dnepropetrovsk State Agrarian and Economic University. The studied growth stimulants have established themselves as substances with a stable effect and low toxicity. They can be used both in crop production in pre-sowing seed treatment in order to intensify growth, and for the production of germinated grain in the production technologies of alcohol, beer, mono-and polysalt malt extracts in order to obtain malt.

Effects on Plant Growth of Material from Hydrothermal Humification Process of Biomass

2011 ◽  
Vol 322 ◽  
pp. 43-46
Author(s):  
Shu Qing Guo ◽  
Xiang Yuan Dong
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Root Growth ◽  
Root Elongation ◽  
Organic Fertilizer ◽  
Incubation Experiment ◽  
Negative Effects ◽  
Plant Seed ◽  
Positive Effects ◽  
Wet Weight

Hydrothermal humification (HTH) is a novel way to treat biomass in order to produce soil conditioner or organic fertilizer. A plant seed germination technique was used to assess the effect of HTH material derived from garden waste on seed germination, root elongation and germination index (GI) of cucumber at different stages of incubation. The incubation experiment was carried out with the mixture of HTH material and soil at a ratio of 1:3, 1:5 and 1:10 (HTH material:soil, wet weight) in soil. The results showed there are direct positive effects of the HTH material on seed germination and root growth. GI all were over 80%. High addition rates had non significantly negative effects on plant growth.

Importance of plant growth-promoting rhizobacteria in enhancing the seed germination and growth of watermelon attacked by fungal pathogens

2007 ◽  
Vol 55 (2) ◽  
pp. 243-249 ◽  
Author(s):  
S. Lokesh ◽  
B. Bharath ◽  
V. Raghavendra ◽  
M. Govindappa
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Fungal Pathogens ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fungal Species ◽  
Didymella Bryoniae ◽  
Seedling Vigour ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Germination And Growth

In the present study, seven isolates of plant growth-promoting rhizobacteria were used for seed treatment to suppress seedling diseases caused by fungi. Their effect on the seed germination and seedling vigour of watermelon was also studied. Among them INR-7 was able to inhibit a broad range of fungal species, GBO3 and IPC-11 were found to be effective against Fusarium spp. and Didymella bryoniae , while isolates SE-34 and T-4 were effective against Myrothecium species and also reduced the development of symptoms on the seedlings. Isolates GBO3, IPC-11 and INR-7 increased seed germination and seedling vigour to the greatest extent.

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