Effect of fungal incidence on physiological quality of tobacco seeds used in Brazil

ABSTRACT: The objectives of the present project were to evaluate the sanity and germination of tobacco seed samples cultivated in Brazil and to identify potential pathogenic fungi to the culture. Thirty-four representatives samples of tobacco seeds were evaluated through germination and sanity test by the blotter-test. On the germination test, results were expressed in percentage of seedlings considered normal, abnormal and non-germinated seeds. The percentage of seeds germination varied between 54.5 and 90%. According to sanity test, it was verified the incidence of Alternaria alternata, Cladosporium spp., Fusarium spp., and Phoma spp. The incidence of A. alternata varied from 3 to 67%, and Fusarium spp. varied from 0 to 19%. There was significative positive correlation between the incidence of A. alternata and the percentage of seed germination. Species of Alternaria and Fusarium can be potential pathogens to tobacco culture and an alarm for the necessity of seed treatment of the seeds that are transporting these fungi.

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Efficiency of application of Trichoderma on the physiological quality and health of cowpea seeds

Comunicata Scientiae ◽

10.14295/cs.v10i2.1388 ◽

2019 ◽

Vol 10 (2) ◽

pp. 301-307 ◽

Cited By ~ 1

Author(s):

Higor Barbosa Reis ◽

Artenisa Cerqueira Rodrigues ◽

Aloisio Freitas Chagas Junior ◽

Aurenivia Bonifacio ◽

Gil Rodrigues Santos

Keyword(s):

Biological Control ◽

Seed Treatment ◽

Indole Acetic Acid ◽

Biological Control Agents ◽

Fusarium Spp ◽

Cowpea Seeds ◽

Trichoderma Sp ◽

Physiological Quality ◽

High Degree

One of the main causes of low productivity of cowpea crops in Brazil is the use of low quality seeds. Low quality seeds have a high degree of infestation by phytopathogens, mainly fungi. Seed treatment with biological control agents, such as fungi of the genus Trichoderma, is a useful alternative to reduce or inhibit the transmission of diseases via seeds. In view of the above, this study aims to evaluate the physiological and sanitary quality of cowpea seeds treated with conidia of Trichoderma sp. (1.2, 2.4, 4.8 and 9.6 x 108 CFU g-1). We evaluated the germination and the sanity of seeds, length of seedling radicles, and production of indole acetic acid (IAA) by fungi. The experimental design was completely randomized in all experiments. In general, there was a predominance of Fusarium spp. and Rhizoctonia solani. The treatment of seeds with the conidia of Trichoderma sp. was positive for the parameters related to germination and radicle length of cowpea beans up to the concentration 4.8 x 108 CFU g-1. We conclude that the application of Trichoderma sp. was efficient in reducing the incidence of Fusarium spp., and promoted the germination and elongation of the radicle in cowpea.

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Efeito do tratamento químico com inseticida/fungicida e polímero na qualidade fisiológica da semente de soja - Effect of chemical treatment with insecticide / fungicide and polymer on the physiological quality of soybean seed

Científic - Multidisciplinary Journal ◽

10.29247/2358-260x.2017v4i1.p12-18 ◽

2017 ◽

Vol 4 (1) ◽

pp. 12 ◽

Cited By ~ 1

Author(s):

Evânia Alves ◽

Elder Aguiar ◽

Célio Pereira ◽

...

Keyword(s):

Glycine Max ◽

Chemical Treatment ◽

Seed Treatment ◽

Soybean Seed ◽

Soybean Seeds ◽

Germination Test ◽

M 10 ◽

De Se ◽

Physiological Quality

RESUMOA soja é uma das culturas mais cultivadas do planeta, sendo o Brasil, um de seus maiores produtores. É uma fonte barata e rica de óleo vegetal. O tratamento de sementes é amplamente utilizado para evitar perdas por patógenos e insetos na fase inicial do estabelecimento das plantas. Sendo uma das formas de se evitar a perda da qualidade. O objetivo deste trabalho foi avaliar o efeito do tratamento químico com inseticida/fungicida e polímero na qualidade final das sementes de soja. Foram utilizadas sementes do cultivar M-7110 Ipro, produzida na safra 2016/17 na região de Rio Verde, GO, com grau de umidade de 12%. Os tratamentos de sementes utilizados foram: Testemunha, Caixa vigor e praga (200 mL de Cruiser+ 100 mL de fipronil + 100 mL de Maxim XL); 100 mL + 100 mL de Standak + Maxim XL (Fipronil 250 g/L + Metalaxil-M 10 g/L e Fludioxonil 25 g/L) e 300 mL + 100 mL de Cropstar + Maxim XL (Imidacloprido 150 g/L e Tiodicarbe 450 g/L + Metalaxil-M 10 g/L e Fludioxonil 25 g/L). Foram utilizados o teste de germinação, emergência e a taxa de crescimento de plântulas. O tratamento Cropstar + Maxim XL se destacou como o melhor para o tratamento das sementes de soja quando comparado aos outros tratamentos utilizados neste trabalho. O uso de Standak + Maxim ML foi inferior aos demais para o tratamento de sementes de soja.Palavras-Chave: tratamento de sementes; Glycine max; vigor.ABSTRACTSoy is one of the most cultivated crops on the planet, being Brazil, one of its largest producers. It is a cheap, rich vegetable oil fountain. Seed treatment is widely used to avoid losses by pathogens and insects in the early stages of plant establishment. Being one of the ways to avoid the loss of quality. The purpose of this work was to evaluate the effect of chemical treatment with insecticide/fungicide and polymer in the final quality of soybean seeds. Seeds of cultivar M-7110 Ipro, produced in the harvest 2016/17 in the region of Rio Verde, GO, with a moisture content of 12% were used. The seeds treatments used were: Control, Caixa vigor e praga (200 mL de Cruiser+ 100 mL de fipronil + 100 mL de Maxim XL); 100 mL + 100 mL de Standak + Maxim XL (Fipronil 250 g/L + Metalaxil-M 10 g/L e Fludioxonil 25 g/L) e 300 mL + 100 mL de Cropstar + Maxim XL (Imidacloprido 150 g/L e Tiodicarbe 450 g/L + Metalaxil-M 10 g/L e Fludioxonil 25 g/L). The germination test, emergency and the growth rate of seedlings were tested. The treatment Cropstar + Maxim XL stood out as the best for treating soybean seeds when compared to other treatments used in this work. The use of Standak + Maxim ml was inferior to the other for the treatment of soybean seeds.Keywords: seed treatment; Glycine max; vigour

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Physiological quality of soybean seeds treated with imidacloprid before and after storage

Plant Soil and Environment ◽

10.17221/364/2020-pse ◽

2020 ◽

Vol 66 (No. 10) ◽

pp. 513-518

Author(s):

Renata Cristiane Pereira ◽

Murilo Fuentes Pelloso ◽

Larissa Vinis Correia ◽

Thaisa Cavalieri Matera ◽

Rayssa Fernanda dos Santos ◽

...

Keyword(s):

Electrical Conductivity ◽

Seed Treatment ◽

Seedling Emergence ◽

Accelerated Aging ◽

Soybean Seeds ◽

Germination Test ◽

Soybean Cultivars ◽

Before And After ◽

Physiological Quality

This study aimed to evaluate the effect of different slurry volume of imidacloprid insecticide on the physiological potential during the storage of seeds of three soybean cultivars. A completely randomised experimental design was adopted, in a 6 × 3 × 2 factorial scheme, which treatments were six slurry volumes with imidacloprid insecticide (0, 200, 500, 800, 1 100 and 1 400 mL/100 kg of seeds), 3 soybean cultivars (SYN15630, M5947, and NS5959) and 2 storage periods (0 and 30 days after seed treatment), with four replications. The treated seeds were stored in kraft paper bags with controlled temperature and humidity. The physiological potential of the seeds was evaluated by standard germination test, electrical conductivity, accelerated aging, seedling emergence in the sand seedbed, and the field. The germination and vigor of soybean seeds were reduced during storage, especially with the increase in the volumes of the insecticide solution.

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

Semina Ciências Agrárias ◽

10.5433/1679-0359.2018v39n2p855 ◽

2018 ◽

Vol 39 (2) ◽

pp. 855 ◽

Cited By ~ 1

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.

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Fluid-dynamic behavior of flaxseed fluidized and spouted bed

Ciência Rural ◽

10.1590/0103-8478cr20160644 ◽

2017 ◽

Vol 47 (10) ◽

Author(s):

Elza Brandão Santana ◽

Maria da Conceição da Costa Valente ◽

Lorena Gomes Corumbá ◽

Elisangela Lima Andrade ◽

Cristiane Maria Leal Costa ◽

...

Keyword(s):

Fluidized Bed ◽

Dynamic Behavior ◽

Seed Treatment ◽

Fluid Dynamic ◽

Seed Processing ◽

Linum Usitatissimum L ◽

Air Temperatures ◽

Physiological Properties ◽

Physiological Quality

ABSTRACT: Processing of particles in a moving bed, such as a fluidized bed or a spouting bed, is commonly used in the operations of drying, coating, and granulation of particulate systems. This process has applications in the chemical, pharmaceutical and, presently, agronomical industries, especially for seed treatment/coating. This research aimed to analyze the fluid-dynamic behavior of fluidized and spouting beds with different air temperatures and loads of flaxseeds (Linum usitatissimum L.), with estimates of the fluid-dynamic parameters correlated to each process. The parameters were compared with the values obtained from classical correlations in the literature, with indications of associated percentages of deviation. Influence of fluid dynamics on the physiological quality of seeds was assessed by germination tests and the germination speed index. An analysis of the results indicated that seed processing was adequate for processing in dynamically active beds; however, temperatures above 50ºC in both beds caused significant reductions in the physiological quality of the seeds. Processing in a fluidized bed presented a smaller reduction of the physiological properties of the flaxseed.

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Foliar application of silicon and the effect on wheat seed yield and quality

Journal of Seed Science ◽

10.1590/s2317-15372013000100012 ◽

2013 ◽

Vol 35 (1) ◽

pp. 86-91 ◽

Cited By ~ 7

Author(s):

Samantha Rigo Segalin ◽

Caroline Huth ◽

Thais D'Avila Rosa ◽

Diógenes Barella Pahins ◽

Liliane Marcia Mertz ◽

...

Keyword(s):

Seed Yield ◽

Foliar Application ◽

Accelerated Aging ◽

Dry Weight ◽

Wheat Cultivars ◽

Wheat Seed ◽

Germination Test ◽

Yield And Quality ◽

Physiological Quality

Adequate nutrients for plants are important for increasing the yield and quality of the seeds produced. The objective of this study was to evaluate foliar fertilization with silicon in wheat and its effect on seed yield and physiological quality. Treatments consisted of two silicon dosages (three and six liters silicon per hectare) and the control (no silicon) and five wheat cultivars: OR "Quartzo", OR "Ônix", Fundacep "Linhagem", Fundacep "Campo Real" and Fundacep "Horizonte". The experimental design was randomized blocks with four replications. After physiological maturity, harvesting and threshing of the seeds were done manually. Seed samples were evaluated for yield and physiological quality from the germination test, first germination count, seedling dry weight, accelerated aging, electrical conductivity, 1000 seeds and hectoliter weights. The results showed that the foliar application of silicon at the dosages tested did not affect the yield and physiological quality of the seeds produced by the wheat cultivars.

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Application of Trichoderma harzianum on the physiological quality of cowpea seeds

Australian Journal of Crop Science ◽

10.21475/ajcs.21.15.05.p2865 ◽

2021 ◽

pp. 643-648

Author(s):

Marcelo Laranjeira Pimentel ◽

Henara Valéria Miranda Castro ◽

Mike Kirixi Munduruku ◽

Larissa Conceição Cunha Ponte ◽

Deyvielen Maria Ramos Alves ◽

...

Keyword(s):

Trichoderma Harzianum ◽

Seed Treatment ◽

Germination Percentage ◽

Hypocotyl Length ◽

Cowpea Seeds ◽

Randomized Design ◽

Germination Speed ◽

Physiological Quality ◽

Set Up

The use of fungi in seed treatment can improve the plant's physiological characteristics. The aim of this study was to evaluate the influence of the use of Trichoderma harzianum on the physiological quality of bean seeds. The experiment was set up and conducted in the forest seed laboratory of the Federal University of Western Para, in a randomized design, using 4 procedures on the basis of a colony forming unit (CFU): T1 (0 CFU), T2 (4 x 109 CFU), T3 (8 x 109 CFU) and T4 (12 x 109 CFU), with 5 repetitions. Germination percentage (G%), germination speed index (GSI), hypocotyl length (HL) and radicle length (RL) were evaluated as variables. The data were analyzed by variance analysis and the averages were compared using the Tukey test (p≤0.05), in addition to the regression analysis, using the Minitab© version 18 statistical software. There were differences between the germination percentage tests, in which T2 obtained 100% of germinated seeds, for GSI it was observed that T2 and T3 were equal and superior to the other treatments, while for RL T1 and T2 obtained the best results, however, for HL there were no statistical differences between treatments. T2 was more efficient in the physiological quality of seeds to germination percentage and germination speed index

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Use of seed treatment with fungicide in control of colletotrichum truncatum and physiological quality of soybean seeds glycine max

Journal of Biotechnology and Biodiversity ◽

10.20873/jbb.uft.cemaf.v4n2.oliveira ◽

2013 ◽

Vol 4 (2) ◽

pp. 98-106

Author(s):

Vinícius Almeida Oliveira ◽

Lorenxo Paradiso Martins ◽

Rogério Cavalcante Gonçalves ◽

Luíz Paulo Figueredo Benício ◽

Daniella Lima da Costa ◽

...

Keyword(s):

Glycine Max ◽

Seed Treatment ◽

Pathogenic Fungus ◽

Dry Weight ◽

Soybean Seeds ◽

Colletotrichum Truncatum ◽

Fresh Weight ◽

Crop Development ◽

Physiological Quality

The fungus are the main microorganisms present in seeds, is the main cause of deterioration and loss in production. The anthracnose caused by C. truncatum associated with soybean seeds as has main vehicle for introduction into the planting areas can be detected in all stages of crop development, from the cotyledons to the end of the cycle, being present in the stems, veins, leaflets and pods. Thus aimed to evaluate the influence of using different products fungicides as seed treatment, where the seeds were inoculated with the pathogenic fungus and treated with the chemicals They take Carbedazim + Fludioxonil + metalaxyl-M and carboxin + thiram. For each fungicide product was two tramentos done using the doses recommended by the manufacturer and 75% of dose. We evaluated health, germination and promote plant (Plant growth, fresh weight and dry weight of root and shoot). This work concludes that the use of fungicide controls significantly seeds infected with C. truncatum and presents a significant improvement as the development of structures seedling.

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ELECTRICAL CONDUCTIVITY AND QUALITY OF DIFFERENT UMBEL ORDER CARROT SEEDS

Revista Brasileira de Agropecuária Sustentável ◽

10.21206/rbas.v9i04.8079 ◽

2020 ◽

Vol 9 (04) ◽

pp. 75-81

Author(s):

Luana de Souza Marinke ◽

Hugo César Rodrigues Moreira Catão ◽

Gabrielly Fernanda Francisco ◽

Ítala Menegon Castilho ◽

Letícia Rodrigues de Oliveira ◽

...

Keyword(s):

Electrical Conductivity ◽

Germination Rate ◽

Statistical Design ◽

Germination Test ◽

Aerial Portion ◽

Initial Characterization ◽

Different Temperatures ◽

Physiological Quality ◽

Final Score

Carrot seeds exhibit irregular vigor due to the wide blooming period of the crop. Results from germination tests are insufficient to evaluate the physiological potential. Thus, vigor tests are used in combination with germination tests. The objective of this work was to evaluate the quality of carrot seeds from different umbel order and the electrical conductivity under different temperatures and imbibing periods. Carrot seeds from cultivar Brasilia were used to perform the experiments. Content of water, the first and the final score of the germination test, index of germination rate, and length of roots and of the aerial portion were determined in the initial characterization. The electrical conductivity test was completed with replicates containing 50 seeds, in 25 mL deionized water at 20, 25 and 30oC. Evaluations were performed with 2, 4, 6, 8, 12 and 24 hours of imbibing period. The experiment was accomplished under a completely random statistical design. The quality of carrot seeds varied according to the umbel order. Seeds of secondary umbels showed better physiological quality. The electrical conductivity test is efficient to evaluate the vigor of carrot seeds with 8 hours of imbibing period at 25°C.

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Patents for the Physiological Quality in Seeds of Peach Rootstock Classified by Weight and Stored for Different Periods

Recent Patents on Food Nutrition & Agriculturee ◽

10.2174/2212798410666181120122624 ◽

2019 ◽

Vol 10 (2) ◽

pp. 124-130 ◽

Cited By ~ 1

Author(s):

Aline G. Souza ◽

Oscar J. Smiderle ◽

Renata D. Menegatti ◽

Marcos Aurélio C. de Lima ◽

Tainá R. das Neves ◽

...

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Growth Analysis ◽

Prunus Persica ◽

Stone Fruit ◽

Germination Test ◽

Experimental Conditions ◽

Physiological Quality

Background: Among stone fruit, the peach (Prunus persica (L) Batsch) is one of the most widely grown species in Brazil, in both area cultivated and in production. Objective: The aim of this study was to evaluate the physiological quality of heavy and light seeds of four cultivars of Prunus persica for two storage periods, from tests of electrical conductivity, germination, and an analysis of initial plantlets growth. Methods: The Electrical Conductivity test (EC) was conducted in a Completely Randomised Design (CRD), in a 4 x 2 x 5 factorial scheme with five replications. The germination test was carried out in CRD, in a 4 x 2 factorial scheme with eight replications. The physiological quality of the seeds was determined at zero and twelve month’s storage. For the growth analysis, the experimental design was in CRD, in a 4 x 2 factorial scheme with four replications. Results: Under the conditions of the present study, it was found that the tests of germination and electrical conductivity were complementary in evaluating physiological quality in seeds of Prunus persica rootstock, suggesting that independent of the weight of the seeds, in ‘Capdeboscq’, ‘Aldrighi’, ‘Okinawa’ and ‘Okinawa Roxo’, there is a loss of quality and viability when the seeds are stored for a period of 12 months. Conclusion: Under the experimental conditions of the present study, it was concluded that storage for a period of 12 months in Recent patents is not rather recommendable for maintaining quality and viability in seeds of Prunus persica of the Capdeboscq, Aldrighi, Okinawa and Okinawa Roxo cultivars.

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