Physiological Performance of White Oat Seeds Treated with Phosphite-based Products

Aims: White oats are considered one of the most important cereals in the world. Currently, fertilizers based on phosphorus and silicon are being studied as inductors of resistance in the treatment of seeds, since they have as advantages such as low costs and excellent absorption by plants. The effects of seed treatment with phosphite resistance inducers are still unknown, being necessary the study in relation to interact with the seed at the time of twinning. Study Design: The experimental design used was completely randomized, with four replications, two commercial products based on phosphite FullTec Mais and Ultra Plus and five doses. Place and Duration of Study: The work was conducted at the Didactic Laboratory of Seed Analysis of the Faculty of Agronomy Eliseu Maciel of the Federal University of Pelotas (UFPel), Pelotas-RS, in 2019. Methodology: White oat seeds were used, produced in the 2018/2019 agricultural kharif and treated with commercial products based on FullTec Mais and Ultra Plus phosphites, in five doses: 0; 1.0; 2.0; 3.0; 4.5 mL for each 100 kg of seeds. The variables evaluated were first germination count (CP), germination (G), shoot length (CA), root length (CR), total length (CT), accelerated aging (EV) and total dry mass (MST). The data expressed as a percentage were subjected to analysis of variance to verify the effect of treatments. Then, the Duncan means test (P=0.5) was performed, for the discrimination between the treatment means. Statistical analyzes were performed using the R Core Team (2020). Results: The results showed that the FullTec Mais product stimulates the physiological performance of white oat seeds for the variables first germination count (CP), germination (G) and shoot length (CA), with a dose of 2 mL of the product per 100 kg of seeds that showed the highest expression. For the Ultra Plus product at a dose of 1 mL of the product per 100 kg of seeds it is more efficient in the accelerated aging test (EV), for the other variables it did not show significant differences. Conclusion: It is possible to use phosphite-based micronutrients in seed treatment, without causing physiological damage to the seed during the twinning process.

Download Full-text

Germination and vigor of Caesalpinia pulcherrima (L.) Sw. seeds under different light and temperature conditions

Ciência Rural ◽

10.1590/0103-8478cr20170741 ◽

2018 ◽

Vol 48 (8) ◽

Author(s):

Magnólia Martins Alves ◽

Edna Ursulino Alves ◽

Luciana Rodrigues de Araújo ◽

Maria de Lourdes dos Santos Lima ◽

Marina Matias Ursulino

Keyword(s):

Experimental Design ◽

Central America ◽

White Light ◽

Dry Mass ◽

Light Regime ◽

Shoot Length ◽

Light Regimes ◽

Seed Analysis ◽

Germination Speed ◽

Living Fence

ABSTRACT: Caesalpinia pulcherrima is a Fabaceae family species from Central America, which has a small size and is widely used as a living fence in the urban afforestation for streets, parks, and gardens. Based on this importance, the aim of this research was to study the influence of light and temperature on the germination of C. pulcherrima seeds. The study was carried out at the Laboratory of Seed Analysis of the Center of Agricultural Sciences of the Universidade Federal da Paraíba, Areia, PB, Brazil. The experimental design was completely randomized, comprising a 3x5 (three temperatures and five light regimes) factorial scheme with four replicates containing 25 seeds each. Germination and vigor of seeds were evaluated under temperatures of 25°C and 30ºC constant and 20-30ºC alternated in different light regimes: white, green, red-distant, red, and absence of light. Variables analyzed were: germination, first germination count, germination speed index, root length, shoot length, and the ratio of dry mass of root/shoot of the seedlings. Seeds of C. pulcherrima germinate in the presence and absence of light, being a neutral photoblastic. Recommendation to test the vigor of these seeds is the temperature of 30°C in the white light regime.

Download Full-text

Physiological performance of wheat seeds treated with micronutrients and protection products during storage

Journal of Seed Science ◽

10.1590/2317-1545v39n2176874 ◽

2017 ◽

Vol 39 (2) ◽

pp. 182-188 ◽

Cited By ~ 2

Author(s):

Joice Aline Freiberg ◽

Marcos Paulo Ludwig ◽

Suemar Alexandre Gonçalves Avelar ◽

Eduardo Girotto ◽

Darlan de Maria Eickstedt ◽

...

Keyword(s):

Moisture Content ◽

Seed Treatment ◽

Storage Time ◽

Accelerated Aging ◽

High Quality ◽

Physiological Performance ◽

Physiological Quality ◽

Wheat Seeds

Abstract: Seeds with high quality are one of the important factors to consider in the crops establishment on field. Therefore, the physical and physiological quality of wheat seeds treated with mixes of micronutrients including zinc and protective products were aimed. The wheat seeds were analyzed in a factorial scheme 5x3x4, with five storage time: 0, 60, 120, 180 and 240 days; three micronutrients: micronutrients 1 (1% Mn; 0.1% Mo; 10% Zn); micronutrients 2 (0.3% B; 0.3% Co; 3% Zn) and no micronutrients, and four protective products: untreated seeds, polymer (Colorseed He), fungicide carboxin + thiram (Vitavax® Thiram 200 SC) + insecticide thiamethoxam (Cruiser® 350 FS) and polymer + fungicide + insecticide. After treatment, the seeds were stored under uncontrolled conditions for 240 days and at intervals of 60 days, the germination, accelerated aging and moisture content were determined. Wheat seeds untreated and treated with polymer have the best physiological performance during storage, regardless micronutrients treatments. The wheat seeds treated with carboxin + thiram + thiamethoxam and polymer + carboxin + thiram + thiamethoxam can be storage up to 120 days, under uncontrolled conditions, regardless micronutrients treatments. The seed treatment does not alter the moisture content of wheat seeds.

Download Full-text

Storage of Soybean Seeds and Addition of Insecticide and Micronutrients

Journal of Agricultural Science ◽

10.5539/jas.v11n1p553 ◽

2018 ◽

Vol 11 (1) ◽

pp. 553

Author(s):

Gustavo H. Demari ◽

Vinícius J. Szareski ◽

Ivan R. Carvalho ◽

Tuane A. da Silva ◽

Vânia M. Gehling ◽

...

Keyword(s):

Significant Interaction ◽

Seed Treatment ◽

Primary Root ◽

Dry Mass ◽

Shoot Length ◽

Soybean Seeds ◽

Seed Treatments ◽

Storage Times ◽

And Storage ◽

Primary Root Length

The objective of this work was to evaluate the effects on the physiological attributes of soybean seeds submitted to the seed treatment with addition of insecticide, polymers and micronutrients throughout the storage. The experimental design was completely randomized in a factorial scheme, with four seed treatments per two seasons of storage of the seeds. The analysis of variance revealed a significant interaction among seed treatments and storage times for both cultivars at 5% of probability, referring to the characteristics of shoot length (SL), primary root length (RL), shoot dry mass (SDM) and dry mass of the primary root (RDM) for the cultivar Fundacep 37 RR. Addition of seed treatments influences the physiological performance of seedlings originated from soybean seeds stored for 240 days. The shoot and primary root lenghts, and shoot dry mass express the isoenzyme esterase through the aerial part and primary root of the seedling, the malate dehydrogenase is expressed in the primary root while in the peroxidase it is evident in the shoot of the seedlings.

Download Full-text

Residual effect of bur gherkin seed treatment with biostimulant under salt stress

Journal of Seed Science ◽

10.1590/2317-1545v38n3163796 ◽

2016 ◽

Vol 38 (3) ◽

pp. 219-226 ◽

Cited By ~ 1

Author(s):

Maria Lilia de Souza Neta ◽

Francisco de Assis de Oliveira ◽

Salvador Barros Torres ◽

Antonia Adailha Torres Souza ◽

Sara Monaliza Costa Carvalho ◽

...

Keyword(s):

Salt Stress ◽

Agricultural Production ◽

Seed Treatment ◽

Accelerated Aging ◽

Residual Effect ◽

Dry Mass ◽

Beneficial Effects ◽

Physiological Quality ◽

Previously Treated

Abstract: The physiological quality of seeds used in agricultural production is one of the main factors that should be considered when implanting the culture. This study aimed at evaluating the quality of bur gherkin seeds, cv. Liso de Calcutá, coming from plants grown from seeds that were previously treated with biostimulant (0, 5, 10, 15 and 20 mL. kg-1 seeds) and cultivated in two irrigation water salinities (0.5 and 3.5 dS. m-1). Initially, the water content of seeds was determined and the following tests were performed: germination, accelerated aging, greenhouse emergence, emergence speed index, height and dry mass of seedling aerial part. It was found that the physiological quality of bur gherkin seeds coming from plants that were subjected to salt stress is negatively affected, and that the use of biostimulant, applied via seeds, provides beneficial effects on the physiological quality of seeds produced in the next generation.

Download Full-text

Physiological potential and initial development of soybean plants as a function of seed treatment

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632019v4955076 ◽

2019 ◽

Vol 49 ◽

Author(s):

Luciano Del Bem Junior ◽

Jonas Leandro Ferrari ◽

Gustavo Dario ◽

Yago de Barros Triboni ◽

Carlos Gilberto Raetano

Keyword(s):

Leaf Area ◽

Seed Treatment ◽

Root Nodules ◽

Accelerated Aging ◽

Dry Mass ◽

Soybean Plant ◽

Initial Development ◽

Shoot Height ◽

Thiophanate Methyl ◽

Randomized Design

ABSTRACT Seed treatment is a process that helps to control insects and soil-borne pathogens, besides allowing a given crop to reach its maximum production potential and protect its seedlings. This study aimed to evaluate the physiological performance of seeds and the initial development of soybean, as a function of seed treatment. The study was based on a completely randomized design, with five treatments [imidacloprid + thiodicarb (75 + 225 g a.i. 100 kg-1 of seeds); chlorantraniliprole (62.5 g a.i. 100 kg-1 of seeds); cyantraniliprole (72 g a.i. 100 kg-1 of seeds), fipronil + thiophanate-methyl + pyraclostrobin (5 + 45 + 50 g a.i. 100 kg-1 of seeds); and control (seeds without treatment)]. Initially, the physiological quality of the seeds was evaluated by determining the first germination count, final germination and accelerated aging, with four replications. After that, the effect of the seed treatment on the soybean plant development was evaluated by analyzing the leaf area, number of leaves, shoot height, root and shoot dry mass and fresh mass of root nodules, with ten replications. The seed treatment with fipronil + pyraclostrobin + thiophanate-methyl allows an increased germination when the seeds are subjected to the accelerated aging test, besides an increment in the shoot height and leaf area of the plants.

Download Full-text

GERMINATION AND VIGOR OF INDUSTRIALLY TREATED MAIZE SEEDS

Ipê Agronomic Journal ◽

10.37951/2595-6906.2019v3i1.4331 ◽

2019 ◽

Vol 3 (1) ◽

pp. 59-70

Author(s):

Raianny Dos Reis Teixeira ◽

Joseanny Cardoso Da Silva Pereira

Keyword(s):

Seed Treatment ◽

Storage Time ◽

Detrimental Effect ◽

Accelerated Aging ◽

Storage Period ◽

Maize Seeds ◽

Accelerated Aging Test ◽

Aging Test ◽

Physiological Quality ◽

Germination Vigor

The industrial seed treatment combines the application of insecticides, fungicides, nematicides, micronutrients and other products. However, seed submission to the combination of several products can cause phytotoxicity, resulting in reduced viability and vigor, which is directly proportional to the increase in the storage period of the material. Thus, the objective was to determine the vigor of corn seeds and the percentage of germination in substrates when submitted to two types of industrial treatment as a function of storage time. The experimental design was a completely randomized, 2 x 2 x 2 factorial design (two treatments, two times and two substrates / two vigor tests / two emergency tests) for the germination, vigor and emergency tests. Hybrid corn seeds were treated with two types of industrial treatments: TSI3 (combination of three products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced) and TSI4 (combination of four products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced, Cruiser 350 FS). The analyzed variables were: germination, vigor and emergence. In the germination test, it was verified that, when vermiculite was added, there was a higher percentage of germination in corn seeds. When added thiametoxan, the combination of products in the treatment of corn seeds had a detrimental effect on their physiological quality, reducing germination and vigor. The industrially treated corn seeds showed a reduction in vigor when submitted to the accelerated aging test after the prolongation of the storage period.

Download Full-text

Envelhecimento acelerado em sementes de sorgo sacarino Sorghum bicolor (L.) Moench

Revista Verde de Agroecologia e Desenvolvimento Sustentável ◽

10.18378/rvads.v12i3.4337 ◽

2017 ◽

Vol 12 (3) ◽

pp. 374

Author(s):

Cristiane Deuner ◽

Andréia Da Silva Almeida ◽

Matheus Luiz Testa ◽

Anna Dos Santos Suñé ◽

Lilian Madruga de Tunes

Keyword(s):

Sorghum Bicolor ◽

Sweet Sorghum ◽

Accelerated Aging ◽

Rio Grande ◽

Rio Grande Do Sul ◽

Accelerated Aging Test ◽

Seed Analysis ◽

Aging Test ◽

Randomized Experimental Design

O sorgo sacarino é cultivado a partir de sementes, necessitando técnicas adequadas de produção, colheita e secagem das mesmas para garantir sua disponibilidade e qualidade. Objetivou-se avaliar a qualidade inicial estudando uma metodologia mais adequada do teste de envelhecimento acelerado para a avaliação do potencial fisiológico de sementes de sorgo sacarino. A pesquisa foi conduzida no Laboratório Didático de Análise de Sementes do Departamento de Fitotecnia, Universidade Federal de Pelotas, em Pelotas, Rio Grande do Sul. Utilizou-se delineamento experimental inteiramente casualizado com 4 repetições. Foram utilizados quatro lotes de sementes de sorgo sacarino. Inicialmente, foi avaliada a qualidade inicial das sementes através dos seguintes testes: teor de água, germinação, primeira contagem de germinação e emergência a campo. Após, os lotes foram submetidos ao teste de envelhecimento tradicional e com uso se solução salina saturada (NaCl), nos períodos de 12, 24, 48, 72, 96 e 120h à 41 ºC. A exposição das sementes por 24h a 41 ºC no envelhecimento acelerado com uso de solução saturada de NaCl e por 48h a 41 ºC no envelhecimento acelerado tradicional são adequados para diferenciar lotes de sementes de sorgo sacarino.Accelerated aging in sorghum sacarino seeds Sorghum bicolor (L.) MoenchAbstract: Saccharin sorghum is cultivated from seeds, requiring adequate production, harvesting and drying techniques to ensure the availability of quality seed and, therefore. The objective was to evaluate the initial quality by studying a more adequate methodology of the accelerated aging test for the evaluation of the physiological potential of sorghum seeds. The research was conducted in the Laboratory of Seed Analysis of the Department of Plant Science, Federal University of Pelotas, in Pelotas, Rio Grande do Sul. A completely randomized experimental design with 4 replicates was used. Four lots of sweet sorghum seeds were used. First we assessed the quality of the seeds by the following tests: water content, germination, first count and emergency field. Following evaluation of initial quality, lots were submitted to the traditional aging test and use saturated saline, in periods of 12, 24, 48, 72, 96 and 120 hours at 41 °C. Exposure of seeds for 24 hours at 41 °C in accelerated aging with saturated NaCl and use for 48h at 41 °C in traditional accelerated aging are suitable to differentiate batches of sweet sorghum seeds.

Download Full-text

Physiological potential of corn seeds with different sizes and vigor levels subjected to micronutrient treatment

Revista Agro mbiente On-line ◽

10.18227/1982-8470ragro.v14i0.5946 ◽

2020 ◽

Vol 14 ◽

Author(s):

Mônica Satie Omura ◽

Verônica Pellizzaro ◽

Gustavo Henrique Freiria ◽

Felipe Favoretto Furlan ◽

Márcio Antonio Nicoletti ◽

...

Keyword(s):

Factorial Design ◽

Seed Treatment ◽

Cold Test ◽

Dry Mass ◽

Shoot Length ◽

Metabolic Processes ◽

Liquid Fertilizer

Micronutrients are used in small amounts by plants and changes in metabolic processes of seeds can improve germination and vigor; however, little is known about the effects of the combination of Zn, Co, and Mo on corn seeds. Thus, the objective of this study was to evaluate the effects of the application of Zn, Co, and Mo on the physiological potential of corn seeds of different sizes and levels of vigor. A randomized 2×2×3 factorial design was adopted, with two levels of vigor (high and low), two seed sizes (18 and 22 mm), and three doses of liquid fertilizer containing micronutrients (0, 2, and 4 mL kg-1). The physiological potential of the seeds was evaluated based on germination and vigor tests. High vigor corn seeds had greater physiological potential compared to low vigor seeds. Regarding size, small seeds (18 mm) had higher percentages of germination and vigor than the large seeds (22 mm). Seed treatment with micronutrients (Co, Mn, and Zn) resulted in improved emergence in the field, shoot length, and dry mass of large and small seeds with the application dose of 2 mL kg-1, and the application dose of 4 mL kg-1 enhanced emergence in the field of large seeds and germination after the cold test of low vigor seeds of both sizes.

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

Accelerated Aging Test in Thyme Seeds (Thymus vulgaris L.)

Journal of Agricultural Studies ◽

10.5296/jas.v9i1.17761 ◽

2020 ◽

Vol 9 (1) ◽

pp. 32

Author(s):

Flávia Mendes dos Santos Lourenço ◽

Marco Eustáquio de Sá ◽

Oscar Mitsuo Yamashita ◽

Vinícius Martins Silva ◽

Juliana Trindade Martins ◽

...

Keyword(s):

Exposure Time ◽

Saline Solution ◽

Seed Quality ◽

Accelerated Aging ◽

Cold Test ◽

Dry Mass ◽

Thymus Vulgaris ◽

Aging Period ◽

Accelerated Aging Test ◽

Aging Test

Evaluating seed quality with precision and accuracy is one of the priorities for obtaining high quality material. This study aimed to evaluate whether the variations in the performance of the accelerated aging test, in terms of exposure time and temperature, in the traditional form or in saline solution, would result in an efficient combination to evaluate the physiological quality of thyme seeds (Thymus vulgaris L.). The seeds were submitted to the tests of total germination, germination speed index, first germination count, seedlings emergence, seedling length, seedling dry mass, cold test, electrical conductivity, variations in the conduction of the accelerated aging test and the water content of the seeds was performed after each accelerated aging period. The treatments were the combination of temperatures (36, 38, 40 and 42 ºC), exposure time (24, 36, 48 and 72 hours) and two procedures (traditional and saline), with four replications for each batch. Traditional accelerated aging test at 42 ºC and 24 hours of exposure time, and saline solution accelerated aging test at 38 ºC and 24 hours of exposure time showed sensibility to evaluate physiological potential for thyme seed. For both saline solution and traditional accelerated aging test, the exposition time of 24 hours was efficient to evaluate physiological potential of thyme seeds.

Download Full-text