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 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.

scholarly journals Prediction model for phenology of grapevine cultivars with hot water treatment

2017 ◽  
Vol 52 (10) ◽  
pp. 887-895 ◽  
Author(s):  
Sabrina Lerin ◽  
Daniel Santos Grohs ◽  
Marcus André Kurtz Almança ◽  
Marcos Botton ◽  
Paulo Mello-Farias ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Mathematical Model ◽  
Water Treatment ◽  
Prediction Model ◽  
Hot Water ◽  
Cabernet Sauvignon ◽  
Hot Water Treatment ◽  
Temperature Range ◽  
Time Periods

Abstract: The objective of this work was to prepare a prediction model for the phenology of grapevine cultivars (Bordô, Cabernet Sauvignon, Moscato Embrapa, Paulsen 1103, SO4, and IAC 572) using hot water treatment. The heat treatment with hot water consisted of combinations of three temperatures (50, 53, and 55°C) and three time periods (30, 45, and 60 min), with or without previous hydration for 30 min. After the treatments, the cuttings were planted in the field and their phenological development was evaluated during two months. The six studied cultivars presented different responses to the effects of the factors temperature and time, but did not differ significantly regarding hydration. It was possible to develop a mathematical model for the use of hot water treatment in grapevine cuttings, based on phenological development ( y phenology = 48.268 − 0.811 x 1 − 0.058 x 2) and validated by the variables sprouting and root emission. From the developed model, it is recommended that the hot water treatment be applied in the temperature range between 48 and 51°C for cuttings of all cultivars.

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 the Hot-Water Treatment for the Control of Ratoon Stunting on the Germination of Some Commercial Sugarcane Varieties

1969 ◽  
Vol 46 (2) ◽  
pp. 83-86
Author(s):  
José Adsuar ◽  
Julio H. López-Rosa
Keyword(s):  
Heat Treatment ◽  
Water Treatment ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Percentage Germination ◽  
Middle Section ◽  
Sugarcane Varieties ◽  
Heat Treated ◽  
Basal Section ◽  
Better Than

An experiment was conducted using the hot-water treatment at 50° C. for 2 hours for the purpose of determining the tolerance of some commercial sugarcane varieties grown in Puerto Rico to the heat treatment used in the control of the ratoon-stunting disease, as well as the effect on the germination of the different sections of the stem. Three-eyed seed pieces from the top, middle, and bottom sections of the following the canes were used: P.R.980, B.37161, P.O.J.2878, M.336, B.41227, H.328560, B.4362, B.40105, B.37172, and P.R.905. The results were as follows: 1. There were marked differences among the varieties tested in regard to heat tolerance, as reflected by the percentage germination of the heat-treated canes. 2. In general, the middle section tolerated the heat treatment better than the top, whereas the basal section was also more resistant to heat than the top.

scholarly journals Disinfection of Orange Seeds to Reduce Citrus Canker Dissemination and Improve Germination

2020 ◽  
Vol 8 (4) ◽  
pp. 372
Author(s):  
Asma Akbar ◽  
Shehzad Asad ◽  
Zahoor Ahmad ◽  
Azra Nadeem ◽  
Shehla Awan
Keyword(s):  
Water Treatment ◽  
Bacterial Contamination ◽  
Germination Rate ◽  
Citrus Canker ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Surface Sterilization ◽  
Bacterial Inoculum ◽  
Water Treatments ◽  
Important Disease

We evaluated chemo and thermotherapy for decontaminating orange seeds against the bacteria Xanthomonas citri subsp. citri (Xcc), a quarantine and economically important disease worldwide. We infected orange (cv. Valencia) seeds with bacterial inoculum and studied the potential of three different methods i.e. surface sterilization with bleach, disinfection with plant preservative mixture, and hot water treatment to eliminate the bacteria. Our findings showed that the hot water, bleach (NaOCl), and a commercially available mixture of antifungal and antibacterial compounds known as Plant Preservative Mixture (PPM) were very effective in eliminating most bacterial contamination from orange seeds. Our results also showed that treatment with bleach and hot water treatment enhanced seed germination and seedling vigor. Germination rate ranged from 18.51 to 77.78%, 7.41 to 62.96% and 13.33 to 66.67% for bleach, PPM and hot water treatments, respectively. Seedling height ranged from 4.28 to 6.63cm, 4.17 to 5.94cm and 3.42 to 5.99cm for bleach, PPM and hot water treatment, respectively. Findings of this study will provide impactful and practical methods for an economical and robust seed decontamination method.

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 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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