scholarly journals Viability Test of Sesbania rostrata Seed with Hot Water Treatment

2010 ◽  
pp. 121-127
Author(s):  
MM Islam ◽  
M Salim ◽  
B Meah ◽  
MM Haque ◽  
MS Alam
Keyword(s):  
Water Treatment ◽  
Seed Viability ◽  
Hot Water ◽  
Sesbania Rostrata ◽  
Hot Water Treatment ◽  
Viability Test ◽  
Hard Seed ◽  
Immersion Period ◽  
Different Temperatures ◽  
Pathogenic Infection

The study was conducted at the Laboratory of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, during March to August, 2008 to examine the effect of hot water treatment at different temperatures with varying immersion periods on the viability of Sesbania rostrata seeds. Effect of dipping seeds in hot water at temperature of 78, 79, 80 and 810C for 24, 25, 26, 27 and 28 min were evaluated for this purpose. The lowest seed viability and seed germination (0.5%) was obtained at 81 0C for 28 min immersion period. The lowest hard seed (3.0%) and minimum (0.63%) pathogenic infection was found at same temperature and immersion period. Germination and tetrazolium tests were used throughout the experiment for estimating seed viability. Extreme hot water treatment deteriorated the viability of Sesbania rostrata seeds.

Effect of Seed Treatments on Germination in Acacia

1977 ◽  
Vol 25 (3) ◽  
pp. 269 ◽  
Author(s):  
J Clemens ◽  
PG Jones ◽  
NH Gilbert
Keyword(s):  
Water Treatment ◽  
Germination Rate ◽  
Hot Water ◽  
Practical Significance ◽  
Hot Water Treatment ◽  
Percentage Germination ◽  
Single Treatment ◽  
Seed Mortality ◽  
Different Temperatures ◽  
Time Periods

The germination of seed of five Acacia spp. was studied following a manual chipping treatment or exposure to water held at different temperatures for discrete time periods. Response was evaluated on the basis of the final percentage germination, and estimates of rate of germination and time taken for germination to commence. There were differences in response of the species to hot water sufficiently large to be of practical significance. No single treatment gave optimum germination in all species. Increasing severity of treatment improved germination rate and percentage germination up to a point where seed mortality became apparent. Manual chipping of the seed gave larger improvements in germination rate, and the seeds began to germinate faster than those given any hot water treatment. However, in some species germination percentages were lower in chipped seeds than in those treated with hot water.

scholarly journals Hot water treatment effect in the elephant grass ashes calcinated at different temperatures

2018 ◽  
Vol 23 (3) ◽  
Author(s):  
Erika Yukari Nakanishi ◽  
Valdemir dos Santos ◽  
Matheus Roberto Cabral ◽  
Sérgio Francisco Santos ◽  
Michelle Santos Rodrigues ◽  
...  
Keyword(s):  
Water Treatment ◽  
Crystallite Size ◽  
Chemical Structure ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Elephant Grass ◽  
X Ray ◽  
Pozzolanic Material ◽  
Different Temperatures ◽  
Xrd Patterns

ABSTRACT In recent years, agro-industrial residues have focused attention in the scientific community as a new source of pozzolans. In Brazil, for example, one of the wastes generated from agro-industrial activities comes from elephant grass that is cultivated as biomass for energy cogeneration. This study evaluated the effect of hot water treatment on the crystalline structure of elephant grass ashes calcinated in two different temperature (700 and 900°C). To study the chemical structure and the composition of the ashes the X-ray fluorescence (XRF) and X-ray diffractions (XRD) analyses were carried out. The results achieved in the present work shown that, elephant grass ashes meet the ASTM C-618 standard, for the minimum sum content of the silica (SiO2), aluminum (Al2O3) and iron (Fe2O3) oxides, of 50% to be considered as a pozzolanic material. The presence of an amorphous phase has been detected in all XRD patterns. The ashes calcinated at 700°C showed lower crystallinity and the treatment with hot water decreased crystallite size, i.e., the material became more amorphous. On the other hand, the ashes calcinated at 900°C, less reactive, had a lower content of K2O. Therefore, the hot water treatment was effective to reduce the potassium content in the ashes. Additionally, it contributed to reduce the crystallite size of silica in the ash calcinated at 700°C, while the effect is contrary to the ash calcinated at 900°C.

scholarly journals Effect of Seed Size and Different Pretreatment Methods on Germination of Albizia zygia (DC.) J. F. Macbr

2021 ◽  
Vol 25 (5) ◽  
pp. 815-818
Author(s):  
O.A. Iroko ◽  
S.O. Rufal ◽  
W.T. Wahab
Keyword(s):  
Water Treatment ◽  
Seed Size ◽  
Cold Water ◽  
International Market ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Hard Seed ◽  
Seed Pretreatment ◽  
And Control ◽  
Hard Seed Coat

Albizia zygia produces valuable timber which has received some level of prominence in the international market. However, the seeds are dormant, and the tree species remain undomesticated. This study was conducted to evaluate the effect of seed size and presowing on the germination of Albizia zygia in a nursery. Seeds were grouped into four categories in regard to their length, small (≤0.5 cm), medium (> 0.5 < 0.8 cm), large (≥0.8 cm), and mixture of small, medium, and large seeds. The seeds were subjected to five main seed pretreatment methods, namely, soaking in sulphuric acid (H2SO4) for 2 minutes, mechanical scarification, soaking in hot water for 5 minutes, soaking in cold water for 24 hours, and control where seeds were sown without any treatment. The results indicate that combination of mechanical scarification and large seeds produced the highest (100%) germination. Hot water treatment was effective in large seeds producing 69.0% germination. The increased germination for mechanically scarified seeds suggests that seed dormancy in Albizia zygia is mainly due to its hard seed coat. Therefore, it is recommended to farmers to adopt use of mechanical scarification and large seeds, since it is safe and effective.

Silver nanoparticles eliminate Xanthomonas campestris pv. campestris in cabbage seeds more efficiently than hot water treatment

2021 ◽  
Vol 27 ◽  
pp. 102284
Author(s):  
Jakub Pečenka ◽  
Zuzana Bytešníková ◽  
Tomáš Kiss ◽  
Eliška Peňázová ◽  
Miroslav Baránek ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Water Treatment ◽  
Xanthomonas Campestris ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Xanthomonas Campestris Pv Campestris

Nanostructured antibacterial aluminum foil produced by hot water treatment against E. coli in meat

MRS Advances ◽  
2021 ◽  
Author(s):  
Quinshell Smith ◽  
Kenneth Burnett ◽  
Nawzat Saadi ◽  
Khulud Alotaibi ◽  
Atikur Rahman ◽  
...  
Keyword(s):  
Water Treatment ◽  
Aluminum Foil ◽  
Hot Water ◽  
Hot Water Treatment ◽  
E Coli

scholarly journals Non-Deep Physiological Dormancy in Seed and Germination Requirements of Lysimachia coreana Nakai

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 490
Author(s):  
Saeng Geul Baek ◽  
Jin Hyun Im ◽  
Myeong Ja Kwak ◽  
Cho Hee Park ◽  
Mi Hyun Lee ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Germination Rate ◽  
Seed Viability ◽  
Cold Stratification ◽  
Dormancy Breaking ◽  
Viability Test ◽  
Physiological Dormancy ◽  
Different Temperatures ◽  
Germination Requirements

This study aimed to determine the type of seed dormancy and to identify a suitable method of dormancy-breaking for an efficient seed viability test of Lysimachia coreana Nakai. To confirm the effect of gibberellic acid (GA3) on seed germination at different temperatures, germination tests were conducted at 5, 15, 20, 25, 20/10, and 25/15 °C (12/12 h, light/dark), using 1% agar with 100, 250, and 500 mg·L−1 GA3. Seeds were also stratified at 5 and 25/15 °C for 6 and 9 weeks, respectively, and then germinated at the same temperature. Seeds treated with GA3 demonstrated an increased germination rate (GR) at all temperatures except 5 °C. The highest GR was 82.0% at 25/15 °C and 250 mg·L−1 GA3 (4.8 times higher than the control (14.0%)). Additionally, GR increased after cold stratification, whereas seeds did not germinate after warm stratification at all temperatures. After cold stratification, the highest GR was 56.0% at 25/15 °C, which was lower than the GR observed after GA3 treatment. We hypothesized that L. coreana seeds have a non-deep physiological dormancy and concluded that 250 mg·L−1 GA3 treatment is more effective than cold stratification (9 weeks) for L. coreana seed-dormancy-breaking.

scholarly journals Morphological Study of Zinc-Oxide Nanorods Grown by Hot Water Treatment Suitable for Solar Cells Conversion Efficiency Enhancement

2020 ◽  
Author(s):  
Mohammad Khairul Basher ◽  
S. M. Shah Riyadh ◽  
Md. Khalid Hossain ◽  
Mahmudul Hassan ◽  
Md. Abdur Rafiq Akand ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Water Treatment ◽  
Conversion Efficiency ◽  
Zno Nanorods ◽  
Hot Water ◽  
Zinc Oxide Nanorods ◽  
Hot Water Treatment ◽  
Time Duration ◽  
Zinc Surface

Zinc-oxide (ZnO) nanostructures including nanorods are currently considered as a pioneer research of interest world-wide due to their excellent application potentials in various applied fields especially for the improvement of energy harvesting photovoltaic solar cells (PSC). We report on the growth and morphological properties of zinc-oxide (ZnO) nanorods grown on the surface of plain zinc (non-etched and chemically etched) plates by using a simple, economical, and environment-friendly technique. We apply hot water treatment (HWT) technique to grow the ZnO nanorods and varies the process parameters, such as temperature and the process time duration. The morphological, and elemental analysis confirm the agglomeration of multiple ZnO nanorods with its proper stoichiometry. The obtained nanostructures for different temperatures with different time duration showed the variation in uniformity, density, thickness and nanonorods size. The ZnO nanorods produced on the etched zinc surface were found thicker and uniform as compared to those grown on the non-etched zinc surface. This chemically etched Zinc plates preparation can be an easy solution to grow ZnO nanorods with high density and uniformity suitable for PSC applications such as to enhance the energy conversion efficiency of the photovoltaic (PV) solar cells towards the future sustainable green earth.

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