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 Effect of Pre-Sowing Treatments on Seed Germination and Seedling Growth of Silver Butterfly Tree (Bauhinia rufescens)

2018 ◽  
Vol 6 (3) ◽  
pp. 344-354
Author(s):  
J. A. Opoku ◽  
J. N. Amissah ◽  
M. E. Essilfie ◽  
J. C. Norman
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Growth Regulator ◽  
Tap Water ◽  
Germination Rate ◽  
Germination Percentage ◽  
Hot Water ◽  
Root Weight ◽  
Number Of Leaves ◽  
Shoot Weight

Three experiments were conducted in a plastic greenhouse at the Sinna Garden of the Crop Science Department of the University of Ghana, Legon, Accra to investigate into pre-sowing treatment (water treatment, growth regulator, and sulphuric acid scarification and water soaking) effects on seed germination and seedling growth of Bauhinia rufescens from October to December, 2011 and January to April, 2012, respectively. The experimental design used was complete randomized design. There were 4 treatments in experiment 1, 7 in experiment 2 and 6 in experiment 3. Each experiment was replicated five (5) times. The results showed that Bauhinia rufescens seeds soaked in hot water at 65 0 C for 60 minutes gave the highest mean germination rate, tallest plant height and highest number of leaves per plant at 49 days after soaking. It also had the widest stem diameter, highest fresh shoot and root weight, highest fresh root and dry root weight and number of roots per seedling. Seeds soaked in 500 ppm Gibberelic acid(GA3) produced the highest number of leaves per plant and tallest plants at 49 DAS. Seeds soaked in 750 ppm GA3 had the highest number of leaves per plant at 49 DAS and highest fresh shoot weight. Seeds soaked in 1000 ppm Promalin differed significantly from 500 ppm GA3 and the control in germination percentage. Seeds soaked in 1000 ppm Promalin differed significantly from 500 ppm GA3 and the control in germination percentage. Acid scarified seeds for 60 minutes plus soaking in tap water for 24 hours differed significantly from the seeds treated withother growth regulator rates plus 24 hours soaking in germination percentage. Acid scarified seeds for 45 minutes plus soaking in tap water for 24 hours had the tallest plant and highest number of leaves per plant at 49 DAS, widest stem diameter, highest fresh shoot and root weight and dry shoot weight. Soaking seeds in hot water at 65 0 C for 60 minutes and/or in acid (H2SO4) for 45 minutes plus soaking in tap water for 24 hours is recommended as pre-sowing treatment for Bauhinia rufescens for maximum mean germination rate and vigorous vegetative growth of seedlings.

Isolation, identification and characterization of native plant growth promoting bacteria and their plant growth promotion in Zea mays

2021 ◽  
Vol 16 (8) ◽  
pp. 75-80
Author(s):  
Pitchaiah Pelapudi ◽  
Sasikala Ch ◽  
Swarnabala Ganti
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Root Length ◽  
Growth Promotion ◽  
Shoot Length ◽  
Root Weight ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Shoot Weight

In the present rapid growing world, need for a sustainable agricultural practice which helps in meeting the adequate food demand is much needed. In this context, plant growth promoting bacteria were brought into the spot light by the researchers. Though the plant growth promoting bacteria have several beneficial applications, due to some of the disadvantages in the field conditions, they lagged behind. In the current research work, native PGPR were isolated from the rhizosphere soil samples of maize with an aim to isolate the nitrogen fixing, phosphate solubilising and potash solubilising bacteria. Out of the several isolates, potent PGPR isolates viz., Paenibacillus durus PCPB067, Bacillus megaterium PCBMG041 and Paenibacillus glucanolyticus PCPG051 were isolated and identified by using the 16 S rRNA gene sequencing studies. Genomic DNA sequences obtained were deposited in the NCBI Genbank and accession numbers were assigned as MW793452, MW793456 and MW843633. In order to check the efficacy of the PGPR isolates, pot trials were conducted by taking maize as the host plant. Several parameters viz. shoot length, shoot weight, root length, root weight and weight of the seeds were tested in which PGP treatment showed good results (shoot length - 187±3.5 cm, shoot weight - 31±4 g, root length - 32±3.6 cm, root weight - 17±2 g, yield- 103.3±6.1 g) when compared to the chemical fertilizer treatment (shoot length - 177±3.5 cm, shoot weight - 25±3.6 g, root length - 24±3.5 cm, root weight - 14.6±1.52 g, yield- 85.6±7.6 g). Based on the results, it can be stated that these native PGPR isolates can be effectively used in the plant growth promotion of maize.

scholarly journals Effects of eco-friendly carbohydrate-based superabsorbent polymers on seed germination and seedling growth of maize

2018 ◽  
Vol 5 (2) ◽  
pp. 171184 ◽  
Author(s):  
Jinghe Tao ◽  
Wenxu Zhang ◽  
Li Liang ◽  
Ziqiang Lei
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Rate ◽  
Thermal Analyses ◽  
Shoot Length ◽  
Total Biomass ◽  
Arid Areas ◽  
Superabsorbent Polymers ◽  
Survival And Growth ◽  
Semi Arid

Desertification is the degradation of land in arid and semi-arid areas. Nowadays, lack of water and desertification are extreme problems for plant survival and growth in the arid and semi-arid areas of the world. It becomes increasingly important as to how to let the plant absorb moisture more effectively for keeping growth strong. We synthesized superabsorbent polymers (SAPs) with carbohydrate and characterized them by Fourier transform infrared spectra analyses, scanning electron microscopy and thermogravimetric/differential thermal analyses. Then, a completely randomized experiment was conducted to assess the effect of carbohydrate-based SAPs on seed germination and seedling growth of maize in an artificial climate chest. The results showed that adding an appropriate amount of SAPs could improve root length, shoot length, total biomass, germination potential and germination rate. It indicates that this SAP is not toxic to plants and can promote seed germination, and at the same time provides a possibility of replacing other substrates.

ALLELOPATHIC EFFECTS OF PLANT PARTS OF TWO INVASIVE WEEDS ON SEED GERMINATION AND SEEDLING GROWTH OF MAIZE VARIETIES

2020 ◽  
Vol 27 (2) ◽  
pp. 85-92
Author(s):  
Syed Majid Rasheed
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Root Weight ◽  
Invasive Weeds ◽  
Allelopathic Potential ◽  
Plant Parts ◽  
Maize Varieties ◽  
Maize Variety ◽  
Allelopathic Effects ◽  
Shoot Weight

The “Allelopathic effects of plant parts of two invasive weeds on seed germination and seedling growth of maize varieties” was investigated at the Agriculture Graduate laboratory, The Bacha khan University Charsadda Pakistan during summer, 2018. The experiment was carried out in CRD design and factorial arrangements repeated thrice.Five maize varieties namely Azam, Babar, Pahari, Iqbal, and Jalal comprised factor A while Factor B consisted of water extracts from root, stem and leaf of invasive weeds; Parthenium hysterophorus and Xanthium strumarium. Distilled water was used as control for comparison. Data were recorded for percent germination (%), seedlings length (cm), shoot weight (g) and root weight (g). It was evident from the results that maximum germination (100 %), Seedling length (7.6 cm), shoot weight (164.88 g) and root weight (163.8 g) was recorded for control (water) treatments. However, among the tested extracts the minimum germination (80.9 %) of maize varieties were achieved under P. hysterophorus stem extract. Maize variety “Pharri” revealed highest sensitivity towards allelopathic potential of different extract, giving minimum (80.95 %) germination. On the other hand, the maize variety “Babar” showed strong resistance against all applied extracts (treatments) and showed 100% seed germination. In the light of the current results it is recommended that the farmer should discourage the growth of P. hysterophorus weed in their filed as it has strong allelopathic effects on maize crop. Moreover, the farmers should grow maize variety Babar instead of others as this variety showed strong resistant to the allelopathic effects of both the invasive weeds studied.

scholarly journals Allelopathic Impacts of an Agroforestry Tree Species (Streblus asper Lour.) on Seed Germination and Seedling Growth of Chickpea

2021 ◽  
Author(s):  
S. Oraon ◽  
S. Mondal
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Tree Species ◽  
Root Length ◽  
Inhibitory Effect ◽  
Seed Vigor ◽  
Shoot Length ◽  
Allelopathic Effect ◽  
Leaf Extracts ◽  
Streblus Asper

Background: Agroforestry might be a better strategy for sustainable land use and crop production. Allelopathic effect of Streblus asper Lour. (Moraceae) an agroforestry tree species was documented on chickpea (Cicer arietinum L.) seed germination and seedling growth. Methods: The present study was conducted to evaluate the allelopathic potentialities of different concentrations (0.125%, 0.25%, 0.5%, 1.0%, 2.5% and 5%) of aqueous leaf extracts of S. asper on seed germination and seedling growth in laboratory based experiments. The allelopathic potentialities were studied based on seed germination, germination rate, root length, shoot length, biomass, seed vigor index etc. Result: The inhibitory effect was more pronounced with the increasing concentrations of aqueous extracts. 5% aqueous leaf extracts showed a maximum inhibitory effect on seed germination, root length, shoot length, dry weight of root and shoot as compared to control. Based on the allelopathic index, concentrations of 5% aqueous extract showed a strong inhibitory effect. Aqueous leaf extracts contain water-soluble allelochemicals which affect the seed germination and seedling growth. The inhibitory allelopathic effect can be taken as serious consideration before plantation of chickpea in an association of this tree species because of its inhibitory effect on seed germination and early stages of development.

scholarly journals Impact of AgNPs on Seed Germination and Seedling Growth: A Focus Study on Its Antibacterial Potential against Clavibacter michiganensis subsp. michiganensis Infection in Solanum lycopersicum

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Asma Noshad ◽  
Crispin Hetherington ◽  
Mudassar Iqbal
Keyword(s):  
Seed Germination ◽  
Solanum Lycopersicum ◽  
Seedling Growth ◽  
Growth Parameters ◽  
Plant Root ◽  
Germination Rate ◽  
Bacterial Pathogen ◽  
Economic Losses ◽  
Root Weight ◽  
Clavibacter Michiganensis

This study investigated the effect of biogenic AgNPs on seed germination and seedling growth of Solanum lycopersicum. Treatment with silver nanoparticles (AgNPs) showed a significantly high germination rate and seedling growth compared to untreated seeds. Furthermore, its bactericidal effect against bacterial pathogen Clavibacter michiganensis subsp. michiganensis (cmm) infection in Solanum lycopersicum was also determined. Bacterial canker of tomato (BCT) caused by cmm results in reduced plant growth and production leading to considerable economic losses. Herein, fungal extracts of T. harzianum and A. fumigatus were used separately as a reducing agent to synthesize AgNPs of varying concentrations (0.088 mg/L, 0.176 mg/L, and 0.44 mg/L). Results suggested that the biosynthesized AgNPs not only worked as bactericide but also completely inhibited the incidence of cmm infection even at the lowest concentration of 0.088 mg/L under greenhouse conditions. Plants treated with AgNPs showed significantly enhanced growth parameters including plant height (cm), tomato yield/plant (g), fresh biomass (g), number of shoots/plant, root weight (g), and dry biomass (g). So, in order to reduce the toxic effects of chemical-based bactericides, biobased AgNPs are recommended, not only to control but also to prevent the bacterial infection in agriculture.

scholarly journals GENETIC VARIABILITY AND ASSOCIATION AMONG SEEDLING TRAITS OF ZEA MAYS UNDER DROUGHT STRESS CONDITIONS

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
A Haseeb ◽  
A Nawaz ◽  
MQA Rao ◽  
Q Ali ◽  
A Malik
Keyword(s):  
Drought Stress ◽  
Irrigation Water ◽  
Root Length ◽  
Shoot Length ◽  
Stress Conditions ◽  
Root Weight ◽  
Seedling Traits ◽  
Maize Genotypes ◽  
Effects Of Drought ◽  
Shoot Weight

Maize is an important food crop for human and feed for animals or livestock. It is highly sensitive for abiotic and biotic stress conditions. An experiment was conducted in the greenhouse of Institute of Molecular Biology and Biotechnology, The University of Lahore for the determination of effects of drought on maize growth related seedling traits. Four maize genotypes/varieties viz., B-316, Raka-poshi, Pak-Afghoi and EV-1097Q were grown to evaluate the effects of drought stress. Four drought treatments were used including 20% irrigation water, 40% irrigation water, 60% irrigation water, 80% irrigation water, 90% irrigation water and control or 100% irrigation water. It was found that the genotypes B-316 and Raka-poshi showed better performance for all studied traits especial shoot and root length as compared with other two genotypes EV-109Q and Pak-Afghoi. The minimum effects of drought were reported at control and 90% irrigation water. The effects of drought were increased with the increase in concentration of drought stress. The adverse drought effects were reported under the treatment of drought at 20% and 40% irrigation water. The higher genetic advance and heritability was recorded for root length, shoot length, dry shoot weight and dry root weight. The significant correlation was recorded between root length, shoot length and dry shoot weight. The higher contribution for shoot length was reported for root length, dry shoot weight and number of roots per plant. It was concluded from study that the selection of maize genotypes on the basis of root length, shoot length and dry shoot weight may be fruitful to produce drought stress tolerance maize hybrids and synthetic varieties.

scholarly journals Effects of vermicompost and urea on the seed germination and growth parameters of Vigna mungo L. and Vigna radiata L. Wilzek

2019 ◽  
Vol 11 (2) ◽  
pp. 321-326
Author(s):  
Sanchita Bhattacharya ◽  
Sourav Debnath ◽  
Sanjit Debnath ◽  
Ajay Krishna Saha
Keyword(s):  
Seed Germination ◽  
Leaf Area ◽  
Seedling Growth ◽  
Root Length ◽  
Vigna Radiata ◽  
Growth Parameters ◽  
Germination Percentage ◽  
Shoot Length ◽  
Vigna Mungo ◽  
Inorganic Fertilizer

Growth attributes of Vigna mungo and Vigna radiata crop influenced by level and type of fertilizers. The present study was carried out to evaluate and compare the effects of organic (vermicompost) and inorganic (urea) fertilizers on the germination percentage and seedling growth of V. radiata (Green gram) and V. mungo (Black gram). Fresh weight and dry weight of tested plant samples at 10th days of growth stage were also determined. Vermicompost was used as organic fertilizer and urea as inorganic fertilizer. Experimental results showed that vermicompost and urea both has positive effect on seedling growth parameters of V. mungo and V. radiata [average root length (6.1cm and 6.7cm)] , shoot length (6.5cm and 8.3cm), leaf area (312.2 sq.cm and 334.1 sq.cm] as compared to control set [average root length (4.4cm and 4.3cm)] , shoot length (6cm and 5.9cm), leaf area (282.7 sq.cm and 305.5 sq.cm). But urea exerts negative effect on seed germination percentage in V. mungo and V. radiata (58% and 50%) as compared to control (77%). Vermicompost exhibited better result in above parameters in comparison to urea. V. mungo showed increased value in comparison considering V. radiata in case of organic, inorganic fertilizer treated as well as control sets. As composition of locally available fertilizers is unknown, the application of these fertilizers for improving germination percentage and growth parameters of tested crop need to be evaluated. Present work may provide the suggestive approach for usage of these tested fertilizers in field level trial.

scholarly journals Yagya with Gayatri Mantra results in higher seed germination and seedling growth of Tritieum aestivm (wheat)

2019 ◽  
Vol 2 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Ekta Chandel
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Rate ◽  
Shoot Length ◽  
Systematic Research ◽  
Root And Shoot Length ◽  
Mean Germination Time ◽  
Coefficient Of Velocity ◽  
And Control ◽  
Germinated Seeds

To investigate the effect of yagya with Gayetri mantra on the seed germination and seedling growth of Tritieum aestivm, systematic research has been conducted on yagya in which effect of yagya fumes on seed germination has been observed. It has been reported that the germination rate index is 85.08% and 48.15% respectively in seeds that are kept in presence of yagya fumes and control ( in absence of yagya fumes) respectively  and coefficient of velocity of germination is 77.021% and 36.076% respectively in seeds kept in presence of yagya fumes and control. While mean germination time has been reported to be 1.29 days and 2.77 days respectively in seeds which were placed in presence of yagya fumes and control.  The germinated seeds were observed for seedling development and it has been found that the growth of root length and shoot length were 11.875 cm and 11.762 cm respectively in the germinated seeds which were kept in presence of yagya fumes while the growth of root and shoot length were 8.352 cm and 7.904 cm respectively in the germinated seeds that kept in absence of yagya fumes.

Salinity Tolerance of Black Gram Cultivars During Germination and Early Seedling Growth

2018 ◽  
Vol 51 (3) ◽  
pp. 51-68 ◽  
Author(s):  
M.K. Hasan ◽  
M.S. Islam ◽  
M.R. Islam ◽  
H.N. Ismaan ◽  
A. El Sabagh
Keyword(s):  
Salt Stress ◽  
Salinity Tolerance ◽  
Seedling Growth ◽  
Negative Impact ◽  
Germination Rate ◽  
Dry Weight ◽  
Germination Percentage ◽  
Shoot Length ◽  
Sand Culture ◽  
Black Gram

Abstract A laboratory experiment regarding germination and seedling growth test was conducted with three black gram genotypes tested under three salinity levels (0, 75 and 150 mM), for 10 days, in sand culture within small plastic pot, to investigate the germination and seedling growth characteristics. Different germination traits of all black gram genotypes, like germination percentage (GP), germination rate (GR), coefficient of velocity of germination (CVG) greatly reduced, as well as mean germination time (MGT) increased with increasing salt stress. At high salt stress, BARI Mash-3 provided the highest GP reduction (28.58%), while the lowest was recorded (15.79% to control) in BARI Mash-1. Salinity have the negative impact on shoot and root lengths, fresh and dry weights. The highest (50.32% to control) and lowest reduction (36.39%) of shoot length were recorded in BARI Mash-2 and BARI Mash-1, respectively, under 150 mM NaCl saline conditions. There were significant reduction of root lengths, root fresh and dry weight, shoot length, shoot fresh and dry weight in all genotypes under saline condition. The genotypes were arranged as BARI Mash-1 > BARI Mash-3 > BARI Mash-2, with respect to salinity tolerance.

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