scholarly journals Vigor tests in seeds creole of Phaseolus lunatus L.

2019 ◽  
Vol 35 (5) ◽  
Author(s):  
Maria das Graças Rodrigues do Nascimento ◽  
Maria Lúcia Maurício da Silva ◽  
Edna Ursulino Alves ◽  
Caroline Marques Rodrigues ◽  
Maria Joelma da Silva
Keyword(s):  
Electrical Conductivity ◽  
Water Content ◽  
Dry Mass ◽  
Phaseolus Lunatus ◽  
High Productivity ◽  
Randomized Design ◽  
Seed Analysis ◽  
Seedling Length ◽  
Physiological Quality

Seeds with a good physiological quality are essential to high productivity. However, for some seeds, Phaseolus lunatus L., the viability and vigor analyze show deficiency in quality. This work aimed to evaluate the physiological quality of Phaseolus lunatus L. seeds using several vigor tests. The study was realized at the Laboratory of Seed Analysis of the Agricultural Sciences Center of the Federal University of Paraíba, in Areia – PB, Brazil. We used seeds from five cultivars of P. lunatus (Branca, Orelha de Vó, Cearense, Rosinha, and Roxinha). To determine the physiological quality, we measured the water content, the viability and vigor test (germination, emergence, electrical conductivity, tetrazolium, first germination count and emergence, seedling length and dry mass). We used a completely randomized design for seeds evaluation, and the field test was performed in randomized blocks. The water content of P. lunatus did not differ among the cultivars, indicating a uniformity in the percentage of moisture. Also, the percentage and speed of emergency and the dry mass of seedlings did not differ among the varieties. The tetrazolium and electrical conductivity tests indicated that Rosinha cultivar had the worst viability concerning the other cultivars, showing a low percentage of living tissue and lower electrical conductivity. The seeds of Roxinha cultivar had the better physiological quality, and the Cearense cultivar had the worst quality evaluation. We recommend the tetrazolium test but not the electrical conductivity test to evaluate the vigor of P. lunatus.

scholarly journals Vigor tests to evaluate the physiological quality of corn seeds cv. 'Sertanejo'

2017 ◽  
Vol 47 (3) ◽  
Author(s):  
Daniela Vieira dos Anjos Sena ◽  
◽  
Edna Ursulino Alves ◽  
Dayana Silva de Medeiros ◽  
Keyword(s):  
Electrical Conductivity ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Cold Test ◽  
Agricultural Science ◽  
Additional Information ◽  
Randomized Design ◽  
Seed Analysis ◽  
Physiological Quality

ABSTRACT: The vigor tests are intended to monitor the quality of seeds as it allows reliably distinguish lots of low and high vigor, providing additional information to the germination test. So in this study the objective was to identify the most efficient vigor tests on stratification of lots of corn seeds cv. 'Sertanejo'. The experiment was conducted at Laboratory of Seed Analysis at the Center of agricultural Science of the Universidade Federal da Paraíba, using samples from 20 seed lots in a completely randomized design. For characterization of the lots it was evaluated water content, germination and vigor (cold test, electrical conductivity, accelerated aging, seedling emergence in field and germination at low temperatures). The accelerated aging, electrical conductivity and field emergence of seedlings tests are the most efficient for classification of lots of corn seeds cv. 'Sertanejo' in levels of vigor, been the seeds of lot 1 the most vigorous.

scholarly journals Storage of soybean seeds treated with chemicals

2019 ◽  
Vol 40 (6Supl2) ◽  
pp. 2961
Author(s):  
Isneider Luiz Silva ◽  
Fernando Ribeiro Teles de Camargo ◽  
Raniele Tadeu Guimarães de Souza ◽  
Itamar Rosa Teixeira ◽  
Hamilton Kikuti
Keyword(s):  
Chemical Treatment ◽  
Accelerated Aging ◽  
Storage Period ◽  
Dry Mass ◽  
Soybean Seeds ◽  
Soybean Cultivars ◽  
Randomized Design ◽  
Seedling Length ◽  
Physiological Quality

To treat seed lots during the beneficiation process industrial seed treatment (TIS) has been used on seedlings. However, the actual TIS influence on the physiological quality of soybeans throughout storage is not yet known. The objective of this work was to evaluate the effects of TIS on the physiological quality of seeds of soybean cultivars during storage. Three soybean cultivars (M7110 IPRO, RR-8473RSF, M7739 IPRO) were subjected to four chemical treatment combinations (TIC-treated fungicide / insecticide): T1 - control; T2 - fungicide (Derosal Plus® - 200mL); T3 - insecticide (Cruiser ® - 500mL); T4 - a mixture of fungicide and insecticide products metalaxyl + thiabendazole + fludioxonil (MaximAdvanced - 200 mL) and thiamethoxam insecticide (Cruiser 350 FS - 500 mL). The samples were stored for a total of six months, with evaluation before storage and monthly throughout the storage period (0, 30, 60, 90, 120, 150 and 180 days). The seeds were stored in a cold chamber regulated at 12 ± 2 ºC and a relative humidity of 45± 2%. In addition to determining the water content, the following germination and vigor tests were performed: first count, seedling length, seedling dry mass and accelerated aging. A completely randomized design was used, in a 3 x 4 x 7 factorial scheme, with four replications. The data were initiallysubjected to analysis of variance, and later discriminated by the Tukey test (p < 0.05) (cultivars and chemical products) and regression (storage period). The work concludes that the use of insecticide favored the length of seedlings in cultivar RR-8473 RSF. Chemicals affected the quality and vigor of seeds in all studied cultivars. Soybean seeds can be stored with chemical treatment for commercial purposes for up to 60 days.

scholarly journals Sensory and physiological quality of arabic coffee under different fermentation times

2020 ◽  
Vol 36 (2) ◽  
Author(s):  
Kênia Barbosa do Carmo ◽  
Jéssica Conceição Barbosa do Carmo ◽  
Marcelo Rodrigo Krause ◽  
Guilherme Peterle
Keyword(s):  
Electrical Conductivity ◽  
Experimental Design ◽  
Water Content ◽  
Dry Mass ◽  
Fresh Mass ◽  
Drying Process ◽  
Sensorial Analysis ◽  
Fermentation Time ◽  
Physiological Quality

The value of coffee presents a significant increase influenced by the improvement of the beans quality, so that a coffee made by beans with an inferior quality has a lower acceptance in the market and a reduction in therms of commercialization value. The different time of fermentation of the coffee in water can give rise to different beverage and physiological quality of its seeds, and may interfere in its commercialization value and in the production of seedlings in nurseries. The target of this study was to identify the best time of fermentation of the beans and seeds of Arabic coffee in the region of Mutum-MG, aiming to obtain a better quality of the drink and a better physiological quality of the seeds. The experimental design was completely randomized with seven treatments, 0, 6, 12, 18, 24, 30 and 36 hours of fermentation in water. Four replicates per treatment were used. Each repetition consisted in ten liters of coffee. The samples were submitted to a drying process in covered suspended terrarium until reaching 12% moisture. The evaluations consisted in the realization of these sensorial analysis (AS); % water content (%U); electrical conductivity (EC); first germination count (FCG); percentage of germination (%G); total fresh mass (TFM); total dry mass (TDM) and radicle length (RL). The 18 hours fermentation time provided a better quality of coffee drink obtaining a score of 84 points and also resulted in a higher physiological quality of the seeds. Excess fermentation impaired the quality of the drink and physiological quality.

scholarly journals Size and vigor of Anadenanthera colubrina (Vell.) Brenan seeds harvested in Caatinga areas

2017 ◽  
Vol 39 (4) ◽  
pp. 363-373 ◽  
Author(s):  
Jaciara de Souza Bispo ◽  
Danielle Carolina Campos da Costa ◽  
Samara Elizabeth Vieira Gomes ◽  
Gilmara Moreira de Oliveira ◽  
Janete Rodrigues Matias ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Dry Matter ◽  
Folk Medicine ◽  
Germination Percentage ◽  
Climate Variations ◽  
Randomized Design ◽  
Mother Plants ◽  
Physiological Quality ◽  
Completely Randomized Design

Abstract: Angico is a species found in several environments in Brazil, with several applications. It is used in the timber industry and mainly in folk medicine. In order to verify a variation in the biometric characteristics and the quality of seeds from different mother-plants in different harvesting years, the following variables were studied: moisture content, diameter, density, electrical conductivity, fresh and dry matter of seedlings, germination percentage and kinetics, in a completely randomized design with a 2x3 factorial arrangement (lots x size). The obtained results showed that angico seeds from different lots showed different physiological quality, possibly due to the climate variations to which mother-plants were submitted in the different years. Seed size directly interferes with seedling growth under both controlled and greenhouse conditions, and it can be used as a vigor indicator for angico seeds.

scholarly journals PRODUCTION AND PHYSIOLOGICAL QUALITY OF SOYBEAN SEEDS IN ORTHIC QUARTZARENIC NEOSOIL OF THE CERRADO REGION

2015 ◽  
Vol 28 (4) ◽  
pp. 127-134
Author(s):  
CHARLINE ZARATIN ALVES ◽  
GUSTAVO MARTINS ZAQUEU ◽  
ERIC FABIANO SERAGUZI ◽  
AGUINALDO JOSÉ FREITAS LEAL ◽  
JOSUÉ BISPO DA SILVA
Keyword(s):  
Electrical Conductivity ◽  
Aerial Part ◽  
Water Distribution ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Soybean Seeds ◽  
Scheme Design ◽  
Physiological Quality ◽  
Tetrazolium Test

ABSTRACT: The aim of this study was to evaluate the effect of the sowing periods in production, productivity component and physiological quality of seeds of three soybean cultivars (TMG133RR, P98Y70RR and NS7670RR) in Orthic Quartzarenic Neosoil in the cerrado region. The design used was a randomized block a factorial scheme design with four repetitions, and each plot with useful space consisted of three rows of four meters length, spaced at 0.45 meters. Field evaluations were the final stand, the height of the plants, height of the first pod insertion, the mass of 100 seeds and productivity. Already in the lab seeds were evaluated for germination and vigor (first germination count, emergency, emergence speed index, length and dry mass of the aerial part of the plant and roots, electrical conductivity, accelerated aging and tetrazolium test). It concludes that it is possible to use Orthic Quartzarenic Neosoils, located in the Cerrado region at altitudes higher than 600 m, in years and places with good water distribution in the spring-summer seasons, for grain and soybeans production, but as a first goal, the crop should be sown in the first 20 days of November otherwise it should take place in early December.

scholarly journals Yield and physiological quality of wheat seeds after desiccation with different herbicides

2017 ◽  
Vol 39 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Fábio Henrique Krenchinski ◽  
Victor José Salomão Cesco ◽  
Danilo Morilha Rodrigues ◽  
Vinicius Gabriel Caneppele Pereira ◽  
Alfredo Junior Paiola Albrecht ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Dry Mass ◽  
Wheat Crop ◽  
Glufosinate Ammonium ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Wheat Seeds

Abstract: Some desiccation techniques for harvesting wheat may affect seed quality. The objective of this study was to evaluate the effect of different desiccant herbicides applied to the wheat crop and their effects on the production and seed quality. The experiment was conducted with cultivar COODETEC 150 (CD 150) in two sites in Palotina (Paraná state, Brazil) with a randomized block design consisting of 7 treatments (desiccation herbicides) and 4 replications. Desiccation was realized when 50% of the plants were in stage 80 with seeds in powdery or mass consistency. The variables analyzed were percentage of moisture content after harvest, Yield, hectoliter weight, mass of 100 seeds, vigor, germination, fresh mass of seedlings, dry mass of seedlings and root length. The herbicides carfentrazone-ethyl and clethodim were the ones that promoted greatest reduction in vigor. The herbicide paraquat caused reduction in seedling length. There was a reduction in the mass of 100 seeds for glufosinate-ammonium, clethodim, diquat and carfentrazone-ethyl. Glufosinate-ammonium, paraquat, glyphosate, clethodim and diquat caused reduction in yield. Desiccation of Cultivar CD 150 at stage 80 is not recommended, since plant Yield and physiological seed parameters were adversely affected by herbicides.

scholarly journals Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds

2019 ◽  
Vol 41 ◽  
pp. e46030
Author(s):  
João Everthon da Silva Ribeiro ◽  
Arliston Pereira Leite ◽  
Jackson Silva Nóbrega ◽  
Edna Ursulino Alves ◽  
Riselane de Lucena Alcântara Bruno ◽  
...  
Keyword(s):  
Dry Mass ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seedling Length ◽  
Physiological Quality ◽  
Mean Germination Time ◽  
Completely Randomized Design ◽  
Understory Plant

Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time, seedling length and dry mass (root and shoot). Paper and vermiculite substrates combined with constant temperatures of 20, 25, 30 and alternated between 20-30°C, provide greater seed germination and vigor while 35°C reduces seed physiological quality.

scholarly journals PHYSIOLOGICAL QUALITY OF Brachiaria brizantha SEEDS TREATED WITH FUNGICIDE AND INSECTICIDE

2018 ◽  
Vol 31 (3) ◽  
pp. 651-656
Author(s):  
ERIC FABIANO SERAGUZI ◽  
CARLOS HENRIQUE QUEIROZ REGO ◽  
FERNANDA BRITO CARDOSO ◽  
ANA CARINA DA SILVA CÂNDIDO ◽  
CHARLINE ZARATIN ALVES
Keyword(s):  
Root Development ◽  
Dry Mass ◽  
Brachiaria Brizantha ◽  
Thiophanate Methyl ◽  
Physiological Characterization ◽  
Randomized Design ◽  
Phytotoxic Effect ◽  
Physiological Quality ◽  
Completely Randomized Design

ABSTRACT This study aimed to evaluate the effects of chemical treatment of seeds with fungicide and insecticide on the seed physiological quality of Brachiaria brizantha cultivar MG5. Two experiments with four replicates were carried out in a completely randomized design. In the first experiment, the seeds were treated with the fungicide pyraclostrobin + fipronil + thiophanate-methyl and in the second, with the insecticide thiamethoxam, both at doses of 0, 150, 300, 450, and 600 mL of commercial product (CP)/100 kg of seeds. Physiological characterization was done on the basis of the first germination count, germination (%), emergence (%), emergence speed index, and length and dry mass of shoot and root. The treatment of B. brizantha seeds with the fungicide pyraclostrobin + fipronil + thiophanate-methyl benefits the physiological quality of seeds, improving germination and root development, with no phytotoxic effect up to the dose of 600 mL of CP/100 kg of seeds. The insecticide thiamethoxam has a biostimulating effect on B. brizantha cultivar MG5 up to the dose of 270 mL of CP/100 kg of seeds, but is phytotoxic in larger doses.

scholarly journals Physiological quality of osmoprimed gherkin seeds

2013 ◽  
Vol 35 (3) ◽  
pp. 368-373 ◽  
Author(s):  
Rodrigo de Góes Esperon Reis ◽  
Humberto Pereira da Silva ◽  
José Maria Gomes Neves ◽  
Renato Mendes Guimarães
Keyword(s):  
Electrical Conductivity ◽  
Room Temperature ◽  
Dry Weight ◽  
Potassium Nitrate ◽  
Germination Percentage ◽  
Initial Profile ◽  
Randomized Design ◽  
Physiological Quality ◽  
Osmotic Potentials

It was aimed to verify the effect of different methodologies of osmopriming on physiological quality of gherkin seeds. Prior, it has been characterized the initial profile of the gherkin seeds. Then, the seeds were osmoprimed in gerboxes containing two blotter papers wetted with osmotic solutions in a volume equal to three times the paper dry weight and kept in BOD at 15 °C. After the priming, the seeds were dried at room temperature for 48 hours. Then, the following variables were evaluated: seeds moisture content, percentage of germination, percentage of emergence, emergence speed index and electrical conductivity. The analyses of variances were realized according to a randomized design in a factorial scheme 3 x 2 x 4: three solutes (polyetilene glycol 6000 - PEG, potassium nitrate - KNO3 and PEG + KNO3), two osmotic potentials (-0.55 and -1.10 MPa) and four times of priming (24, 48, 72 and 96 hours), followed by analyses of regression. It is concluded that the priming has no effect on germination and affects positively the vigor of the gherkin seeds lots; osmopriming with potassium nitrate is effective in improving the physiological quality of gherkin seeds lot.

scholarly journals Physiological characteristics of endive, lettuce and chicory seeds as a function of spectral quality

2020 ◽  
Vol 11 ◽  
pp. e3227
Author(s):  
Matheus Milani Pretto ◽  
Daniele Cristina Fontana ◽  
Jullie Dos Santos ◽  
Axel Bruno Mariotto ◽  
Braulio Otomar Caron ◽  
...  
Keyword(s):  
Dry Mass ◽  
Germination Percentage ◽  
Spectral Quality ◽  
Second Stage ◽  
Randomized Design ◽  
Seedling Length ◽  
Red Led ◽  
Third Stage ◽  
Significant Length

Seedling production is a critical step in the establishment of vegetables. This work aimed to evaluate the effect of different spectral qualities on the germination and vigor of endive, lettuce, and chicory seeds. The experiment was carried out in three stages. The first stage, two cultivars of lettuce (‘Crespa Repolhuda’ and ‘Vera’) and six spectral qualities (blue LED, red LED, blue + red LED, white LED, fluorescent and dark) were evaluated; the second stage, two cultivars of chicory (‘Lisa Escarola’ and ‘Palla Rosa’) and the same spectral qualities were evaluated. In the third stage, the spectral quality of the endive cultivar ‘Pão de Açúcar’ was evaluated. The experiments were performed in a completely randomized design, with four replications of 50 seeds each. The evaluated parameters were: germination percentage, first count, germination speed index, seedling length, and fresh and dry mass. Endive, lettuce and chicory seeds germinated both in the presence or not of light so that they can be classified as neutral photos. A spectral LED of red quality fostered the development of the most significant volume of fresh mass on the endive, lettuce, and chicory. All the spectral qualities stimulated root growth. The dark, on the other hand, promoted the most significant length of the aerial part, promoting seedlings etiolation.

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