Respiratory activity for the differentiation of vigor on soybean seeds lots

Currently, the highest interest with respect to the assessment of seed physiological quality is to obtain reliable results in a relatively short period of time. This initiative allows for prompt decisions during different phases of seed production primarily after physiological maturity. This research was performed to verify the efficiency and rapidity of the method of Pettenkofer to determine the respiratory activity and to differentiate vigor levels of soybean seed lots. Three lots of soybean seeds cv. 8000 were used. Seed performance was determined by respiratory activity, compared to the following tests: standard germination, germination first count, electrical conductivity, seedling emergence, seedling shoot and root length and total dry mass. Results ranked seed lots according to defferences in physiological quality. Seed imbibition and conditioning period in Pettenkofer's equipment were enough to detect differences in vigor among seed lots, showing that the determination of the respiratory activity is a promising procedure to identify differences in vigor levels among soybean seed lots.

Download Full-text

Fruit maturation stage on the physiological quality of maroon cucumber seeds

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632019v4953188 ◽

2019 ◽

Vol 49 ◽

Author(s):

Cleisson Dener da Silva ◽

Andréia Márcia Santos de Souza David ◽

Josiane Cantuária Figueiredo ◽

Jorge Luiz Rodrigues Barbosa ◽

Rayane Aguiar Alves

Keyword(s):

Seed Quality ◽

Seedling Emergence ◽

Accelerated Aging ◽

Dry Mass ◽

Maturation Stage ◽

Physiological Maturity ◽

Physiological Quality ◽

Photography Analysis ◽

The Ideal

ABSTRACT To obtain seeds of high physiological quality, it is of paramount importance to define the ideal harvest moment, which oftentimes corresponds to the period when the physiological maturity is reached. This experiment aimed to study the maturation process and determine the best harvest season of maroon cucumber fruits (Liso Gibão cultivar), in order to reach the maximum physiological seed quality. The flowers were labeled during the anthesis and the fruits harvested at 14, 21, 28, 35, 42, 49 and 56 days after the anthesis (DAA). The fruits had their visual aspects registered by photography analysis and, later, the seeds were extracted for physical (water and dry matter contents) and physiological (germination, seedling emergence, emergence speed index, accelerated aging and electrical conductivity) analyses. It was observed that the seeds reach the maximum dry mass (8.08 mg seed-1) between 47 and 49 DAA. However, the seed physiological maturity, characterized by a maximum germination (70 %) and vigor, occurs at 56 DDA. The best season to harvest seeds with a higher physiological quality takes place from 49 to 56 DDA, when the fruits present a yellowish color.

Download Full-text

Soybean Industrial Seed Treatment: Effect on Physiological Quality During Storage

Journal of Agricultural Science ◽

10.5539/jas.v10n8p468 ◽

2018 ◽

Vol 10 (8) ◽

pp. 468

Author(s):

C. R. Bork ◽

A. S. Almeida ◽

C. S. Castellano ◽

G. Zimmer ◽

T. D. Avila ◽

...

Keyword(s):

Environmental Conditions ◽

Seed Treatment ◽

Seed Quality ◽

Seedling Emergence ◽

Soybean Seed ◽

Accelerated Aging ◽

Soybean Seeds ◽

Distilled Water ◽

Physiological Quality ◽

Spray Volume

The aim of this study was to analyze soybean seed physiological quality after being subjected to various mixtures of pesticides via industrial seed treatment. The experiment was performed at the seed laboratory of the company BioGrow, located at São Paulo-SP, using soybean seeds cultivar NS 6700 IPRO which were subjected to 11 different treatments. Seed treatment was carried out using a treater Momesso, model L5-K, calibrated to apply a spray volume of 0.5 L 100 kg-1 of seeds in which the volume of each treatment was adjusted using distilled water. After treatment, seeds were spread over plastic strays for drying for a period of 24 hours under environmental conditions. Once dry, seeds were packed in paper bags and stored for 0 (control), 45, 90, 135 and 180 days, under uncontrolled conditions of temperature and relative humidity, when seed physiological quality was evaluated using the following tests: germination, accelerated aging, seedling emergence, speed of emergence index and speed of emergence. Soybean industrial seed treatment before storage for up to 180 days is practicable using the mixtures of pesticides tested for storing seeds under environmental conditions. All treatments tested contribute to the maintenance of seed quality throughout storage.

Download Full-text

ACCELERATED AGING OF Piptadenia moniliformis (BENTH.) SEEDS

Revista Caatinga ◽

10.1590/1983-21252018v31n317rc ◽

2018 ◽

Vol 31 (3) ◽

pp. 681-686

Author(s):

GUTIERRES SILVA MEDEIROS AQUINO ◽

CLARISSE PEREIRA BENEDITO ◽

KLEANE TARGINO OLIVEIRA PEREIRA ◽

PAULO CÉSAR DA SILVA SANTOS ◽

JÉSSICA CHRISTIE DANTAS DE OLIVEIRA

Keyword(s):

Seedling Emergence ◽

Accelerated Aging ◽

Dry Mass ◽

Accelerated Aging Test ◽

Aging Test ◽

Before And After ◽

Physiological Quality ◽

Suitable Combination ◽

Different Levels

ABSTRACT The accelerated aging test consists of evaluating the vigor of the seeds under conditions of high temperature and humidity, with the purpose of identifying the physiological quality of lots with similar germination. The objective of this study was to evaluate the efficiency of the accelerated aging test for classifying seed lots of P. moniliformis at different levels of vigor. Initially, the seed lots were assessed by means of seedling emergence, life velocity index, shoot length and root length, total dry mass of seedlings and determination of water content, before and after each period of aging. The experimental design for the whole world was based on a 3 × 4 factorial scheme (three seed lots and four periods of 24, 48, 72 and 96 h duration), with separate evaluations at temperatures of 38 °C and 41 °C. The accelerated aging test conducted at a temperature of 41 °C for 24 h was a more suitable combination for separating batches of P. moniliformis according to different levels of vigour, and made it possible to obtain results similar to the classification of lots in relation to the initial quality.

Download Full-text

Physiology of Growth and Development of Fruits and Seeds of Common Beans

Journal of Agricultural Studies ◽

10.5296/jas.v9i1.17991 ◽

2020 ◽

Vol 9 (1) ◽

pp. 186

Author(s):

Samara Dayse Da Luz Ayres ◽

Jackson Silva Nóbrega ◽

Riselane de Lucena Alcântara Bruno ◽

Ademar Pereira De Oliveira ◽

Edna Ursulino Alves ◽

...

Keyword(s):

Chemical Composition ◽

Growth And Development ◽

Seed Quality ◽

Dry Mass ◽

Germination Percentage ◽

Common Beans ◽

Physiological Maturity ◽

Seed Analysis ◽

Physiological Quality

Common beans are one of the most economically important legumes in the world. The determination of the ideal harvesting period may coincide with the maximum seed quality and vigor. Thus, the objective was to evaluate the physiology of growth and development of fruits, seeds and seedlings of two cultivars of common beans. To this end, two cultivars of common beans were used: the “Macarrão Trepador” and “Rasteiro Fartura” harvested every five days after anthesis (DAA). The pods were harvested and sent to the laboratory for seed analysis and extraction. In the laboratory, biometric characteristics of fruits and seeds, physiological quality (germination and vigor) and chemical composition of seeds were evaluated. The physiological maturity of “Macarrão Trepador” and “Rasteiro Fartura” cultivars occurred at 35 DAA, during which the seeds had the maximum dry matter and the minimum water content. The chemical composition of the seeds of both cultivars was similar, except for lignin, whose content was higher in “Rasteiro Fartura” cultivar at 25 DAA. The color and dry mass of fruits and seeds, germination percentage, first germination count, germination speed index and average germination time are the indicators that help in determining the physiological maturity point.

Download Full-text

Effects of Macronutrients in the Physiological Quality of Soybean Seeds

Journal of Agricultural Science ◽

10.5539/jas.v10n5p312 ◽

2018 ◽

Vol 10 (5) ◽

pp. 312

Author(s):

Geliandro Anhaia Rigo ◽

Luis Osmar Braga Schuch ◽

Willian Silva Barros ◽

Rodrigo Lamaison de Vargas ◽

Vinícius Jardel Szareski ◽

...

Keyword(s):

Graduate Program ◽

Plant Tissues ◽

Soybean Seeds ◽

Rio Grande Do Sul ◽

Genetic Characteristics ◽

Physiological Quality ◽

High Concentrations ◽

Nitrogen Phosphorus

The aim of this work was to correlate macronutrient content of soybean seeds to physiological quality of different cultivars. The work was developed in the Federal University of Pelotas, in the facilities of the Seed Science and Technology Graduate Program. The experimental design was randomized blocks in arranged in four replicates. The following soybean cultivars were used: BMX Apolo RR (12 lots), BMX Ativa RR (13 lots), BMX Energia RR (26 lots), BMX Força RR (24 lots), BMX Impacto RR (35 lots), BMX Magna RR (16 lots), BMX Turbo RR (44 lots), BMX Potência RR (82 lots) and NA 5909 RR (28 lots), with seeds produced in northwest Rio Grande do Sul. The determination of nutritional contents found in plant tissues of soybean seeds, were measured: Nitrogen (N), Phosphorus (P), Potassium (K), Magnesium (Mg), Calcium (Ca), Sulfur (S). The macronutrient contents of the seeds vary according to genetic characteristics of the cultivars, with higher oscillations of nitrogen, phosphorus, magnesium and sulfur contents present in soybean seeds. Potassium and calcium are defined as the most stable nutrients for the cultivars and seed lots analyzed. High concentrations of nitrogen, phosphorus and calcium are determinants for the physiological quality of soybean seeds.

Download Full-text

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

Revista Caatinga ◽

10.1590/1983-21252015v28n414rc ◽

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.

Download Full-text

Physiological quality of dynamically cooled and stored soybean seeds

Journal of Seed Science ◽

10.1590/s2317-15372013000300012 ◽

2013 ◽

Vol 35 (3) ◽

pp. 353-360 ◽

Cited By ~ 16

Author(s):

Jacson Zuchi ◽

José de Barros França-Neto ◽

Carlos Sigueyuki Sediyama ◽

Adílio Flauzino de Lacerda Filho ◽

Múcio Silva Reis

Keyword(s):

Dynamic Process ◽

Seed Quality ◽

Seedling Emergence ◽

Accelerated Aging ◽

Superior Performance ◽

Soybean Seeds ◽

Tropical Regions ◽

Physiological Quality ◽

Feasible Alternative

Storage is an important step in the production of soybean seeds, mainly in tropical regions, where high temperatures can drastically reduce seed quality. The storage at cooler temperatures may be a feasible alternative to preserve seed quality during storage. The objective of this study was to evaluate the physiological quality of soybean seeds artificially cooled by a dynamic process and stored in an environment, with non controlled temperature and relativity humidity. Two seed lots of cultivars Monsoy 8757, TMG 115 RR and BRS Valiosa RR were used. After processing and during packaging the seeds were cooled to 18 ºC by a dynamic process. Seed samples were collected after 0, 60 and 120 days of storage, using the following parameters germination, accelerated aging, seedling emergence in sand, speed of emergence index, electrical conductivity, tetrazolium and seed health. Although soybean seeds artificially cooled by the dynamic method may have slightly superior performance in maintaining physiological quality during storage in non-refrigerated warehouse, for lots of high physiological quality, these advantages are not observed.

Download Full-text

Correlation between vigor by accelerated aging at pre-sowing and soybean seedling emergence in the field

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n2p455 ◽

2021 ◽

Vol 42 (2) ◽

pp. 455-470

Author(s):

Vanderléia Mathias ◽

◽

Cileide Maria Medeiros Coelho ◽

Keyword(s):

Exposure Time ◽

Seedling Emergence ◽

Soybean Seed ◽

Accelerated Aging ◽

Germination Percentage ◽

Seed Vigor ◽

Growing Seasons ◽

Accelerated Aging Test ◽

Physiological Quality ◽

Field Emergence

Although the accelerated aging test is widely used to determine seed vigor, there are methodological variations in seed exposure time at 41 °C. Therefore, the objective was to indicate the most appropriate seed exposure time to segregate lots that also exhibits a correlation with seedling emergence in the field, and establish vigor levels using the aforementioned test. Soybean seed samples were collected at pre-sowing, representing 100 lots in the 2016/2017 growing season and 125 lots in the 2017/2018 season from different warehouses in 4 regions of Santa Catarina state (SC). Physiological quality was evaluated by germination, accelerated aging (24 and 48 h at 41 °C) and field emergence tests. The results were submitted to descriptive statistical analysis and Pearson’s correlation analysis (p < 0.05). The rank sum index, associated with the Scott-Knott clustering method, was used to classify physiological quality. The average germination percentage was 90 and 91% in the 2016/2017 and 2017/2018 growing seasons, respectively. Vigor obtained an average of 86 (2016/2017) and 85% (2017/2018), when seeds were submitted to accelerated aging for 48 h, and 89% (both seasons) for 24 h. In regard to field emergence, the average was 85 and 80% in the 2016/2017 and 2017/2018 growing seasons, respectively. Considering the 225 lots, the greatest correlation with field emergence was observed in vigor - 48 h (r = 0.71 p < 0.05). Rank sum classification made it possible to establish vigor-based categories, whereby batches with over 85% vigor by 48-h accelerated aging were classified as high vigor, 70 to 84% medium vigor, and under 70% low vigor.

Download Full-text

Soybean (Glycine max L.) seed quality treated with timbó (Magonia pubescens A.St.-Hil) seed coat

Arquivos do Instituto Biológico ◽

10.1590/1808-1657000122019 ◽

2020 ◽

Vol 87 ◽

Author(s):

Ana Mayra Pereira Silva ◽

Amanda Ribeiro Correa ◽

Cárita Rodrigues de Aquino Arantes ◽

Rosiane Alexandre Pena Guimarães ◽

Maria de Fátima Barbosa Coelho ◽

...

Keyword(s):

Seed Coat ◽

Seed Quality ◽

Accelerated Aging ◽

Dry Mass ◽

Seed Extract ◽

Soybean Seeds ◽

Hydroalcoholic Extract ◽

Physiological Quality ◽

Glycine Max L

ABSTRACT: The objective of this study was to evaluate the effect of timbó seed coat on the physiological and sanitary quality of soybean seeds. Timbó seeds were collected from mature fruits in the Cerrado. The external layer of the seed coat was removed and crushed in a mill and used in the treatment of soybean seeds. Three lots of soybean seeds were used, from high, medium and low vigor seeds. The treatments were: powder; gel; hydroalcoholic extract; synthetic fungicide (Vitavax® - Thiram 200 sc), and untreated seeds. The physiological quality of the soybean seeds was determined by standard germination, accelerated aging, length, fresh and dry mass of seedlings. Blotter test was used to determine the sanitary quality. The statistical analyze used was a completely randomized 3 × 5 factorial design, considering three seed lots and five treatments. Treatment with the coat seed extract and gel improves the physiological quality of soybean seeds from low vigor lots. The treatment of seeds with gel decreases the incidence of Fusarium and Penicillium genus; and treatment with the powder reduced the incidence of the Cercospora genus.

Download Full-text

Desempenho germinativo de sementes de soja revestidas com polímeros hidrofílicos

Colloquium Agrariae ◽

10.5747/ca.2020.v16.n3.a371 ◽

2020 ◽

Vol 16 (3) ◽

pp. 48-59

Author(s):

Marina Scarsi ◽

Renata Paula Herrera Brandelero ◽

Cristiane Deuner

Keyword(s):

Water Absorption ◽

Sodium Alginate ◽

Seedling Emergence ◽

Accelerated Aging ◽

Biological Properties ◽

Cassava Starch ◽

Biocompatible Polymers ◽

Soybean Seeds ◽

Absorption Process ◽

Physiological Quality

The use of biodegradable and biocompatible polymers in seeds coated has become important due to their desirable and renewable biological properties. The present study aimed to evaluate the effect of hydrophilic polymers on the water absorption process and physiological attributes of soybean seeds, NK 7059 RRcultivar. The seeds were coated with cassava starch, sodium alginate and polyvinyl alcohol biopolymers at four different concentrations 0, 2, 4 and 6%. The water absorption process was evaluated at three hour intervals for 24 hours, totaling eight evaluations. For physiological quality the seeds were submitted to the tests of first germination count, germination, germination speed index, accelerated aging, greenhouse emergence, emergence speed index and electrical conductivity. The polymers used in the present study increase the percentage of seed soaking, especially sodium alginate at a concentration of 4%. The increase in the concentration of polymers negatively affects seedling emergence, and in the case of sodium alginate it reduces germination and seeds vigor.

Download Full-text