scholarly journals Health and physiological quality of corn seeds treated with fungicides and assessed during storage

2013 ◽  
Vol 35 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Christiano de Sousa Machado de Matos ◽  
Ellen Noly Barrocas ◽  
José da Cruz Machado ◽  
Francisco Cardoso Alves
Keyword(s):  
Fusarium Verticillioides ◽  
Storage Period ◽  
Storage Conditions ◽  
Performance Assessments ◽  
Chemical Treatments ◽  
Fungicide Mixtures ◽  
Contrast Analysis ◽  
Physiological Quality ◽  
Germination Vigor

At post-harvest period, quality of corn seeds may be influenced by several important factors such as: presence of harmful microorganisms, chemical treatments, host species genotype and storage conditions. The objective of this study was to evaluate the performance of corn seeds, hybrids 2B 688 and 2B 710, with high incidence of fungus Fusarium verticillioides and treated with mixtures of fungicides thiophanate-methyl + pyraclostrobin (50 mL a.i .100 kg-1 of seeds) and carbendazim + thiram + micronutrients (100 mL a.i .100 kg-1 of seeds) during six months storage. Performance assessments of seeds were carried out at 0, 30, 60, 90, 120, and 180 days storage. The incidence of F. verticillioides, as well as physiological quality, germination, vigor, stand of plants, emergence speed index, and dry matter weight were assessed. It has been verified that seed treatment with fungicide mixtures was efficient for ensuring seed physiological quality of both genotypes and to reduce incidence of F. verticillioides on treated seeds. By contrast, analysis between treatments with fungicides, within each period assessed and each treatment as compared to control along storage period was verified clear benefits on emergence of seeds after treatment with fungicides.

scholarly journals Qualidade fisiológica de sementes de soja tratadas e armazenadas - Physiological quality of treated and stored soybean seeds.

2017 ◽  
Vol 4 (1) ◽  
pp. 50 ◽  
Author(s):  
Gustavo Cruvinel Rocha ◽  
Aurélio Rubio Neto ◽  
Sihélio Júlio Silva Cruz ◽  
Gabriela Wilk Baião Campos ◽  
Alan Carlos de Oliveira Castro ◽  
...  
Keyword(s):  
Glycine Max ◽  
Accelerated Aging ◽  
Storage Conditions ◽  
Soybean Seeds ◽  
Chemical Treatments ◽  
Physiological Quality ◽  
Germination Vigor ◽  
Processing And Storage ◽  
The University

ResumoDurante o armazenamento as sementes ou grãos podem sofrer alterações em sua composição química, em razão do ambiente de estocagem. Diante disto, a produção de sementes de alta qualidade fisiológica dependerá do somatório de todos os atributos genéticos, físicos, fisiológicos e sanitários. Entretanto, pouco se sabe sobre os efeitos nas sementes por meio da operação de colheita, secagem beneficiamento e armazenamento por longos períodos de tempo. Por isso, foi conduzido no laboratório de sementes da Universidade de Rio Verde, este estudo com o objetivo de avaliar a qualidade fisiológica de sementes tratadas sob diferentes condições de armazenamentos. O delineamento experimental utilizado foi o inteiramente casualizado 2x5x7, sendo duas condições de armazenagem (armazém convencional e climatizado), cinco tratamentos de sementes e sete épocas de avaliação, com quatro repetições. Aos 0, 20, 40, 60, 80, 100, 120 dias após a imposição dos tratamentos foram avaliadas germinação, índice de velocidade de emergência, envelhecimento acelerado e comprimento de raiz. Os tratamentos químicos aplicados nas sementes de soja (cultivar M 7739 IPRO) reduziram o vigor das sementes.Palavras-Chave: Glycine max, germinação, vigor.AbstractDuring storage as seeds or grains may suffer in their chemical composition, because of the storage environment. In view of this, a production of high quality physiological seeds will depend on the sum of all genetic, physical, physiological and sanitary attributes. However, little is known about the effects of seeds by harvesting, drying, processing and storage for long periods of time. Therefore, it was conducted in the seed laboratory of the University of Rio Verde, in order to evaluate a physiological quality of seeds treated under different storage conditions. The experimental design was used for the completely randomized 2x5x7, two storage conditions (conventional and air conditioned warehouse), five seed treatments and seven evaluation periods, with four replications. At 0, 20, 40, 60, 80, 100, 120 days after an imposition of treatments for evaluated germination, emergence speed index, accelerated aging and root length. The chemical treatments applied in soybean seeds (cultivar M 7739 IPRO) reduced seed vigor.Keywords: Glycine max, germination, vigor.

scholarly journals Physiological quality and economic evaluation of treated cowpea seeds stored in different packaging

2020 ◽  
Vol 9 (7) ◽  
pp. e686974625
Author(s):  
Erick Almeida Andrade ◽  
José Eldo Costa ◽  
Rosilene de Morais da Silva ◽  
Julian Junio de Jesus Lacerda ◽  
Bruno Ettore Pavan ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Storage Period ◽  
Dry Mass ◽  
Hypocotyl Length ◽  
Seed Moisture Content ◽  
Chemical Treatments ◽  
Pet Bottles ◽  
Cowpea Seeds ◽  
Physiological Quality

The objective of this work was to evaluate the physiological quality of cowpea seeds and the economic viability of storage in different types of packaging and with different chemical treatments. Seeds were submitted to one of the following chemical treatments of active ingredients: fipronil; fipronil + pyraclostrobin + thiophanate methyl; and fludioxonil + metalaxyl. Seeds without chemical treatment constituted the control. Seeds were placed in permeable cotton bags, permeable raffia bags, semipermeable kraft paper bags, and impermeable PET bottles. The following were evaluated: seed moisture content; germination test; first germination count; germination speed index; hypocotyl length; root length and hypocotyl dry mass and root dry mass. Cost analysis of treatments was also performed. The physiological quality of cowpea seeds was more markedly reduced under storage conditions in permeable packages with fludioxonil + metalaxyl treatment. Impermeable packaging without chemical treatment decreased deterioration of physiological quality in cowpea seeds and is economically viable for a storage period of up to 90 days.

scholarly journals Qualidade de sementes de jiló (Solanum gilo Raddi – Solanaceae) armazenadas em ambiente não controlado

ForScience ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. e00663
Author(s):  
Carlos Manoel Oliveira
Keyword(s):  
Environmental Conditions ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Storage Period ◽  
Storage Conditions ◽  
Germination Percentage ◽  
Emergence Time ◽  
Tropical Regions ◽  
Physiological Quality

Os setores de produção e de conservação de sementes dependem diretamente de trabalhos que determinem as melhores condições de armazenamento e que, consequentemente, garantam o maior período possível de manutenção da qualidade fisiológica da semente. Em regiões tropicais, há uma maior limitação no que tange à manutenção da qualidade fisiológica durante o período de armazenamento, principalmente em ambiente não controlado, cuja variação das condições ambientais pode influenciar sobremaneira a qualidade final de um lote de sementes. Objetivou-se, com o presente trabalho, avaliar a qualidade de sementes de duas cultivares de jiló (Solanum gilo Raddi), armazenadas em condições ambientais não controladas. O delineamento experimental utilizado foi o de blocos casualizados com 5 repetições, em esquema fatorial 2x5, sendo duas cultivares de jiló (Morro Grande e Português) e 5 períodos de armazenamento (0, 30, 60, 90 e 120 dias de armazenamento). Avaliou-se a porcentagem de germinação, a porcentagem de emergência, o Índice de Velocidade de Emergência, o Coeficiente de Variação no Tempo, o Tempo Médio da Emergência, os Índices de Incerteza e de Sincronia da Emergência e a Frequência Relativa da Emergência de plântulas. A cultivar Português se apresentou com os melhores índices de porcentagem de germinação, porcentagem de emergência, índice de velocidade de emergência, tempo médio da emergência e coeficiente de variação do tempo da emergência, quando as sementes foram armazenadas por até dias em ambiente não controlado. A cultivar Português é indicada aos produtores de jiló visando produção de mudas, pois se mostrou superior a cultivar Morro Grande quando armazenadas por até 30 dias em ambiente não controlado. Após 30 dias de armazenamento, a utilização de sementes das duas cultivares não é indicado, pois a porcentagem de germinação cai consideravelmente. Palavras-Chave: Fitotecnia. Produção de sementes. Armazenamento.Viabilidade.   Seed quality of scarlet eggplant stored in environmental conditions not controlled Abstract The sectors of production and conservation of seeds depend directly from studies that determine the best storage conditions and that consequently guarantee the longest possible period of maintenance of physiological quality of seed. In tropical regions, there is a major limitation regarding the maintenance of physiological quality during storage period mainly in uncontrolled environment, whose variation of environmental conditions can greatly influence the final quality of a seed lot. The objective of this final paper was to evaluate the quality of seeds of two cultivars of scarlet eggplant (Solanun gilo Raddi), stored in environmental conditions not controlled. The experimental design used was randomized blocks with 05 replications in a factorial 2 x 5, being two cultivars of scarlet eggplant (Morro Grande and Portuguese) and 05 storage periods (0, 30, 60, 90 and 120 days of storage). Was evaluated the Percentage of Germination, Percentage of Emergence, Emergence Speed Index, Coefficient of Variation of the Time, Average Time of Emergency, Indexes of Uncertainty and Sync the Emergence and Relative Frequency of Seedling Emergence in the time. The Portuguese cultivar presented the best rates of Germination Percentage, Emergency Percentage, Emergency Speed Index, Average Emergence Time and Emergence Time Variation Coefficient, when seeds were stored for up to 30 days in an uncontrolled environment. The Portugues cultivar is indicated to jiló producers aiming seedling production because it was superior to Morro Grande cultivar when stored for up to 30 days in an uncontrolled environment. After 30 days of storage, the use of seeds from both cultivars is not indicated because the germination percentage drops considerably.  Keywords: Phytotechny. Seed production. Storage. Viability.

scholarly journals Adaptation of technological packaging for conservation of soybean seeds in storage units as an alternative to modified atmospheres

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0241787
Author(s):  
Paulo Carteri Coradi ◽  
Claudir Lari Padia ◽  
Lanes Beatriz Acosta Jaques ◽  
Guilherme Abreu Coelho de Souza ◽  
Roney Eloy Lima ◽  
...  
Keyword(s):  
Seed Quality ◽  
Initial Conditions ◽  
Storage Period ◽  
Ambient Air ◽  
Storage Conditions ◽  
Modified Atmosphere ◽  
Soybean Seeds ◽  
Physiological Quality ◽  
Storage Units

This study aimed to evaluate the quality of seeds of RR and RR2 PRO soybean cultivars stored in ambient air with raffia packaging (ANER), ambient air with laminated packaging (ANEL), modified atmosphere with polyethylene packaging (AMEP), refrigerated atmosphere (1 to 3°C) with raffia packaging (ARER), refrigerated atmosphere (1 to 3°C) with laminated packaging (AREL), and modified (-14 PSI) and refrigerated (1 to 3°C) atmosphere with polyethylene packaging (AMREP), over 6 months of storage. Results showed that the seeds of cultivar RR2 were preserved with better physiological quality. Raffia and polyethylene packaging under natural storage conditions, in a refrigerated and modified atmosphere, did not preserve the seed quality over the storage period. The conditions of storage in ambient air with laminated packaging (ANEL) and in a refrigerated atmosphere with laminated packaging (AREL) reduced the environmental effects of temperature and relative humidity, leading to better results of physiological quality of the seeds. Storage time negatively influenced the physiological quality of seeds, except for AREL and ANEL, which maintained the quality close to that of the initial conditions, over the 6 months of storage. The best alternatives for soybean seeds storage over 6 months are the laminated packaging in a natural environment, matching the refrigerated conditions. The technological laminated packaging can be used as a new alternative for conserving soybean seeds in processing and storage units.

scholarly journals Compatibility of Azospirillum brasilense with fungicide and insecticide and its effects on the physiological quality of wheat seeds

2018 ◽  
Vol 39 (2) ◽  
pp. 855 ◽  
Author(s):  
Janete Denardi Munareto ◽  
Thomas Newton Martin ◽  
Tania Maria Müller ◽  
Ubirajara Russi Nunes ◽  
Guilherme Bergeijer da Rosa ◽  
...  
Keyword(s):  
Azospirillum Brasilense ◽  
Seed Treatment ◽  
Accelerated Aging ◽  
Triticum Aestivum L ◽  
Wheat Cultivars ◽  
Pests And Diseases ◽  
Physiological Quality ◽  
Growth Promoting ◽  
Germination Vigor

Seed treatment is a practice that helps the initial establishment of the crop without the effects caused by pests and diseases. The association of diazotrophic bacteria with grasses has been used in the supply of nitrogen to plants; however, these microorganisms produce growth-promoting substances, which promote benefits in the growth and development of the crops. Thus, the objective of this study was to evaluate the compatibility of Azospirillum brasilense associated with the fungicide difenoconazole and the insecticide thiamethoxam by observing the effects on the quality of seed emergence of three wheat cultivars (Triticum aestivum L.). Three wheat cultivars, arranged in a 4 x 2 factorial system with four replicates, were tested. The treatments were the control; difenoconazole (Spectro® at a dose of 150 mL per 100 kg of seed); thiamethoxam (Cruiser® FS 350 at a dose of 200 mL per 100 kg seed) and difenoconazole + thiamethoxam, applied on wheat cultivars TBIO Mestre, TBIO Itaipu and TBIO Sinuelo. Bacteria from the Azospirillum genus were used in the inoculation. The wheat seed retains its quality when it checks the germination, vigor and independent accelerated aging, whether or not fungicide, insecticide and A. brasilense were used. The insecticide thiamethoxam increased the length of shoots and roots and provided compatibility with A. brasilense, and fungicide inhibited the length of shoots and roots and was antagonistic to the bacterium A. brasilense.

scholarly journals Physiological quality of Gliricidia sepium (Jacq.) Steud. (Leguminosae - Papilionoideae) seeds subjected to different storage conditions

2012 ◽  
Vol 36 (2) ◽  
pp. 229-235 ◽  
Author(s):  
Renata Conduru Ribeiro Reis ◽  
Claudinéia Regina Pelacani ◽  
Cimille Gabrielle Cardoso Antunes ◽  
Bárbara França Dantas ◽  
Renato Delmondez de Castro
Keyword(s):  
Water Content ◽  
Seed Viability ◽  
Gliricidia Sepium ◽  
Storage Conditions ◽  
Physiological Processes ◽  
Plastic Bags ◽  
Starting Point ◽  
Cultivated Plant ◽  
Physiological Quality

Studies of seed physiological processes represent the starting point for the sustainable utilization of native or cultivated plant species from the caatinga biome for which germination studies are still scarce. In order to determine adequate methods for the conservation of Gliricidia sepium seeds, the physiological quality of propagules exposed to different conditions and times of storage were examined. Recently collected seeds of G. sepium were analyzed immediately, while the other sample was stored for three, six, nine, or twelve months in plastic or paper bags under refrigeration or at room temperature for further analysis. The germination rates of seeds from each storage regime were determined and these rates compared to their water content. It was observed that germination capacity was directly related to changes in seed humidity. Storing seeds in plastic bags yielded the best conservation, mainly when they were stored at low temperatures. However, even at temperatures near 25°C it was possible to prolong seed viability when their water content was controlled through the use of impermeable packing.

scholarly journals Research Regarding Dynamics of Chemical Content from Pasteurized Egg Melange Stored in Polyethylene Type Packings

2017 ◽  
Vol 54 (2) ◽  
pp. 368-374
Author(s):  
Roxana Nicoleta Ratu ◽  
Marius Giorgi Usturoi ◽  
Daniel Simeanu ◽  
Cristina Simeanu ◽  
Alexandru Usturoi ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Storage Period ◽  
Essential Amino Acids ◽  
Storage Conditions ◽  
Mean Values ◽  
Chemical Content

n the current paper, we aimed to analyze the way in which packing (different polyethylene types) influence the quality of pasteurized melange during storage, packing being realized in units of 1 kg (Tetra Pak) (batch Lexp-1) and units of 5 kg (Bag in box) (batch Lexp-2). Products were stored during a period of 28 days at a temperature of +4�C, qualitative determinations being realized in first day (day 0), at 7 days, at 14 days, 21 days and in day 28 of storage. Were effectuated a sensorial examination and chemical analysis were was established the content in dry matter (%), water (%), proteins (%), content in essential amino acids (isoleucine, methionine, tryptophan, phenylalanine) and non-essential amino acids (alanine, histidine, glycine, serine) (mg/100g) as well as the content in lipids (%) establishing their profile by identification of some saturated fatty acids (16:0 mg/100g and 18:0 mg/100g) and unsaturated fatty acids (16:1 mg/100g and 18:1 mg/100g). After sensorial examinations, the first modifications were observed at the checking effectuated in day 21 for batch Lexp-2, the obtained score being of 18 points, and at checking effectuated in day 28 was given a score of 18 points for melange belonging to batch Lexp-1 and only 14 points for melange from batch Lexp-2. Differences were recorded also in case of chemical composition of products, so for protein content at batch Lexp-1 in first checking day was obtained a mean of 12.730�0.24% and at batch Lexp-2 12.614�0.22%. Differences between those two batches were insignificant (p[0.05). In case of fat content, at the end of storage period was obtained a mean of 11.256�0.06% for batch Lexp-1 and 11.244�0.11% for batch Lexp-2, differences being insignificant (p [ 0.05). Regarding the profile of amino acids and fatty acids, the mean values obtained during whole storage period oscillated from one stage to another, but the differences between those two batches were insignificant (p [ 0.05). Pasteurized egg melange suffers certain sensorial modifications during storage, especially on consistency and colouring, modifications which are accentuated mainly by storage conditions. Type of polyethylene utilized for this product hadn�t influenced the nutritive qualities of product.

scholarly journals Physiological quality of pink pepper seeds (Schinus terebinthifolia Raddi.) as a function of storage

2021 ◽  
Vol 38 (1) ◽  
pp. 144-157
Author(s):  
Thaísa De Oliveira Silveira ◽  
Madelon Rodrigues Braz ◽  
Gilmara Pires de Moura Palermo ◽  
Tiago Böer Breier
Keyword(s):  
Moisture Content ◽  
Storage Time ◽  
Storage Period ◽  
Seed Storage ◽  
Dry Weight ◽  
Native Forest ◽  
Alternative Source ◽  
Physiological Quality ◽  
And Storage

Seeds of native forest species for food and seedling production have a growing demand that impacts the need for studies involving seed storage in order to maintain good levels of germination quality. Thus, scientific analyzes that explore the physiological potential of the seeds of these species are necessary, especially for the pink pepper (Schinus terebinthifolia Raddi.), a species used as an alternative source of income for traditional communities and which has been arousing interest due to the consumption of its fruits as a condiment in the national and international market. This work aimed to assess the physiological quality of pink pepper seeds according to the storage period and seed size. The seeds came from a rural settlement, a pioneer in the extraction of pink pepper, in the state of Rio de Janeiro, Brazil. The seeds were evaluated for moisture content, germination, first count, length and dry weight of the germinated seedlings, during the period of time that they remained stored and the size of the seeds. The results allowed to conclude that: i) the germinative percentage of the stored pink pepper seeds decreased over the months; ii) the moisture content of the seeds decreased over the months evaluated iii) the different sizes of seeds did not show differences in germination and storage time and iv) values of length and dry weight of the seedlings did not differ according to the period of storage.

scholarly journals Biochemical changes and physiological quality of corn seeds subjected to different chemical treatments and storage times

2020 ◽  
Vol 42 ◽  
Author(s):  
Thiago Lucas de Oliveira ◽  
Renzo Garcia Von Pinho ◽  
Heloisa Oliveira dos Santos ◽  
Karen Marcelle de Jesus Silva ◽  
Elise de Matos Pereira ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Alcohol Dehydrogenase ◽  
Cold Test ◽  
Chemical Treatments ◽  
Treatment Standard ◽  
Quality Markers ◽  
Physiological Quality ◽  
Storage Times ◽  
And Storage

Abstract: The chemical treatment of corn seeds is widely adopted for protecting crops at the early stages. However, some molecules interfere in the quality of seeds, especially when stored, by accelerating their deterioration. The objective of this work was to investigate the influence of insecticides on the enzymatic expression and quality of corn seeds subjected to storage. Seeds of the hybrids 2B647PW and SHS4070 were subjected to four different chemical treatments (standard treatment, standard + clothianidin, standard + thiamethoxam, and standard + fipronil) and stored for different periods (0, 3, 6, and 9 months). The quality evaluation included the germination test, first germination count, cold test, and health test. The expression of the enzymes α-amylase, esterase, superoxide dismutase, catalase, and alcohol dehydrogenase were determined by the gel electrophoresis technique. The insecticides clothianidin, thiamethoxam, and fipronil reduce the physiological quality of the seeds of hybrid 2B647PW after nine months of storage. The treatment of seeds with the insecticides clothianidin, thiamethoxam, and fipronil reduces the expression of α-amylase, superoxide dismutase, and catalase enzymes after nine months of storage. The enzymes α-amylase, superoxide dismutase, catalase, and alcohol dehydrogenase are good quality markers for hybrid corn seeds.

scholarly journals Vigor tests in assessing the quality of signal grass seeds

2017 ◽  
Vol 38 (6) ◽  
pp. 3491
Author(s):  
Paulo Alexandre Fernandes Rodrigues de Melo ◽  
Tatiane Sanches Jeromini ◽  
Carlos Eduardo Affonso ◽  
Edna Ursulino Alves ◽  
Cibele Chalita Martins
Keyword(s):  
Germination Rate ◽  
Pearson Correlation ◽  
Seedling Emergence ◽  
Control Program ◽  
Brachiaria Brizantha ◽  
Quality Control Program ◽  
Market Requirements ◽  
Physiological Quality ◽  
Germination Vigor

The correct assessment of the physiological quality of seed lots is necessary for the quality control program of companies. For such purpose, tests that detect differences in the physiological potential of seed lots and that meet the minimum market requirements. Thus, the study was conducted towards assessing the efficiency of laboratory tests in differentiating the quality of Brachiaria brizantha cv. Xaraés seed lots. Seeds from nine lots were assessed regarding water content, germination, first germination count, electrical conductivity and seedling emergence in sand in the laboratory (normal seedlings, first count and germination rate index), and the results were compared with those from the seedling emergence test conducted in the field. The experimental design used was completely randomized, with four replicates, and the Pearson correlation coefficient between the values from the germination, vigor and field seedling emergence tests was determined. The germination and seedling emergence in sand tests and the seedling emergence rate index efficiently assess the physiological quality of Brachiaria brizantha cv. Xaraés seed lots, providing data similar to those from seedling emergence in the field.

Sign in / Sign up

Export Citation Format

Share Document