QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO

QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO GICELLY DA SILVA MAIA¹, WALDENICE LEITE PINHEIRO², FRANCINETE DE ALMEIDA E ALMEIDA³, JOSÉ RENAN DA SILVA E SILVA4, MAGNUN ANTONIO PENARIOL DA SILVA5 1 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 2 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 3 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 4 Graduando em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 5 Orientador. Professor Adjunto C da Universidade Federal Rural da Amazônia, Campus de Tomé-Açu, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] RESUMO: A cultura do milho (Zea mays L.) possui grande importância para a economia mundial e sementes com alto potencial fisiológico são premissas para um bom desempenho produtivo agrícola. Os sistemas de armazenamento objetivam manter a viabilidade das sementes, controlando fatores como umidade e temperatura, principais causas de deterioração. Logo, avaliar o vigor de sementes e seu potencial germinativo, visando como se estabelecerão em campo, é essencial para o controle da qualidade. O presente trabalho buscou avaliar o potencial germinativo e vigor de sementes de quatro híbridos de milho, armazenados em embalagens de papel multifoliado, a partir dos testes de germinação e frio. Foram também avaliados o teor de água, índice de velocidade de germinação, tempo médio de germinação e comprimento de plântulas. Utilizou-se o delineamento inteiramente casualizado, com 4 tratamentos e 4 repetições, os resultados foram submetidos ao teste de Tukey (p < 0,05). O híbrido X2 safra 18/18 com vencimento em junho de 2019, apresentou potencial próximo ao indicado pelo fabricante, os demais não alcançaram o percentual mínimo de germinação apontado pelo fabricante. O armazenamento inadequado das embalagens após abertas podem ter reduzido sua eficácia na conservação das sementes, resultando na redução do potencial fisiológico das sementes de milho. Palavras-chave: embalagens, germinação, vigor. PHYSICAL AND PHYSIOLOGICAL QUALITY OF CORN SEEDS (Zea mays L.) AFTER STORAGE ABSTRACT: The culture of corn (Zea mays L.) has a great importance for worldwide economy and seed with high physiological potential is a premise for good agricultural performance. The storage systems aim to maintain the viability of the seeds, controlling factors such as humidity and temperature, the main causes of deterioration. Therefore, evaluate the vigor of seeds and their germinative potential, aiming at how they will be established in the field is essential for quality control. The present work sought to evaluate the germinative potential and vigor of seeds of four corn hybrids stored in multifoliate paper, based on germination and cold tests. Also applied were: water content, germination speed index, average germination time and seedling length. The randomized design was used, with 4 treatments and 4 repetitions, the results were submitted to Tukey test (p < 0,05). The hybrid X2 crop 18/18, maturing in June 2019, show the next potential indicated by the manufacturer, the rest not achieved or the minimum percentage of germination indicated by the manufacturer. Reduced storage of packages, after opening, can reduce physiological potential of corn seeds. Keywords: packaging, germination, vigor.

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Vigor tests in seeds creole of Phaseolus lunatus L.

Bioscience Journal ◽

10.14393/bj-v35n5a2019-42309 ◽

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.

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Physiological quality of parsley seeds in function of size

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n3supl1p1499 ◽

2021 ◽

Vol 42 (3Supl1) ◽

pp. 1499-1510

Author(s):

Renato Téo de Barros ◽

◽

Cibele Chalita Martins ◽

Tatiane Sanches Jeromini ◽

Givanildo Zildo da Silva ◽

...

Keyword(s):

Seed Size ◽

Dry Weight ◽

Germination Percentage ◽

Randomized Design ◽

Physiological Quality ◽

Completely Randomized Design ◽

Germination Vigor ◽

Selection Of

Parsley seeds are commercialized without classification by size during processing, unlike other crops. This classification procedure allows the standardization of seed size for high precision in sowing, disposal of unwanted material, and selection of high quality seeds. The aim of this study was to verify the effect of seed size on germination, vigor, and yield performance of two parsley cultivars. Seeds from eight lots of parsley of ‘Portuguesa’ and ‘Chacareira’ cultivar were separated into three size classes, represented by the seeds retained in the sieves of 0.84, 1.00 and 1.41mm mesh opening. After classification, seeds were evaluated in the laboratory for water content, germination percentage, first count, and thousand seed weight. In the field, the fresh and dry weight of aerial part and the final number of plants (stand) were evaluated after 78 days of sowing. The experimental design was the completely randomized design in an 8 x 3 factorial scheme (eight lots and three sieve opening) with four replicates, for both cultivars. Data obtained were subjected to analysis of variance and means were compared using Tukey test at 5% probability level. It was concluded that the parsley seeds separated by the 1.41 mm sieves showed higher vigor, and consequently, greater success in stand establishment at the field than those separated by other sieve size. The use of sieves in the classification of parsley seeds helps in obtaining lots with superior physiological quality.

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Sanitary and physiological quality of ‘purple’ corn (Zea mays L.) seeds submitted to thermotherapy

Arquivos do Instituto Biológico ◽

10.1590/1808-1657001222018 ◽

2019 ◽

Vol 86 ◽

Author(s):

Hugo Vieira ◽

João Victor da Silva Martins ◽

Gabriel Ginane Barreto ◽

Rommel dos Santos Siqueira Gomes ◽

Edcarlos Camilo Silva ◽

...

Keyword(s):

Heat Treatment ◽

Zea Mays ◽

Zea Mays L ◽

Hot Water ◽

Randomized Experimental Design ◽

Physiological Quality ◽

Purple Corn ◽

Aspergillus Sp ◽

Good Productivity

ABSTRACT: The use of seeds with good sanitary and physiological potential ensures the establishment of the crop, with a uniform, vigorous and disease-free seedling stand, which will result in good productivity levels. Seen that, the objective was to evaluate the sanitary and physiological quality of purple corn seeds (Zea mays L.) submitted to thermotherapy. They were subjected to heat treatment with immersion in sterile distilled water (SDW) heated at 50, 60 and 70 °C for 1, 2, and 3 minutes. The control (0 min) correspondens only to immersing the seeds in SDW, which were submitted to sanitary and germination tests in a completely randomized experimental design, in a factorial arrangement 3 × 3 + 1 (exposure time × temperature + additional control). Data were subjected to analysis of variance, and the means were compared with the Scott-Knott test up to 5% of probability, with the aid of the statistical program SISVAR®. Immersing Zea mays seeds in hot water at 50, 60 and 70 °C for 1, 2, and 3 minutes is efficient to prevent the increased incidence of Aspergillus sp., Penicillium sp., and Fusarium sp. The heat treatment at 60 °C for 1 and 2 minutes of immersion reduces the incidence of fungal mycoflora without impairing the physiological quality of seeds.

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Physiological quality of dual-purpose wheat seeds from plants subjected to artificial defoliation

Ciência Rural ◽

10.1590/0103-8478cr20151582 ◽

2017 ◽

Vol 47 (1) ◽

Author(s):

Giselle Regina Rodolfo ◽

Clovis Arruda Souza ◽

Cileide Maria Medeiros Coelho ◽

Karla Katy Belizario

Keyword(s):

Analysis Of Variance ◽

Dual Purpose ◽

Statistical Probability ◽

Tukey Test ◽

Randomized Design ◽

Physiological Quality ◽

Source Sink ◽

Wheat Seeds

ABSTRACT: Defoliation may play a role in source-sink relationships and reduce the physiological quality of seeds. The main goal of this research was to investigate the effect of successive defoliations on physiological quality of wheat seeds in 'BRS Umbu' and 'BRS Tarumã' cultivars. Two experiments were carried out using a complete randomized design with four replications. Treatments included plants without defoliation (0), and those where 1, 2, and 3 consecutives defoliations were applied. Seeds from each treatment originated from four different lots. Data were analyzed with one-way analysis of variance and means compared by Tukey test at 5% statistical probability. Germination was not affected by defoliation, or the number of cuts, but an effect on vigor was reported.

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Influência das condições ambientais de armazenamento na qualidade fisiológica de sementes de Mimosa tenuiflora (Willd.) Poir.

Revista Principia - Divulgação Científica e Tecnológica do IFPB ◽

10.18265/1517-03062015v1n48p119-127 ◽

2020 ◽

Vol 1 (48) ◽

pp. 119

Author(s):

Adriano Salviano Lopes ◽

Carina Seixas Maia Dornelas ◽

Iracy Amélia Pereira Lopes ◽

Ariana Da Mota Oliveira ◽

Micilene Silva De Brito ◽

...

Keyword(s):

Moisture Content ◽

Room Temperature ◽

Seed Quality ◽

Seed Viability ◽

Seedling Length ◽

Physiological Quality ◽

Germination Vigor ◽

Glass Packaging ◽

Mimosa Tenuiflora

Storage is a fundamental practice in the control of physiological seed quality since it is a method that can preserve seed viability and vigor for a longer period. Thus, this study aimed to analyze the influence of storage in the physiological quality of seeds of “jurema-preta” (Mimosa tenuiflora (Willd)) in different environments and packages. The experiment was conducted in the Laboratory of Ecology and Botany (CDSA/UFCG), using seeds collected from matrix trees in the municipality of Sumé (Paraíba State, Brazil). The seeds were homogenized and placed in different packages (Kraft paper bag and glass packaging). After that, they were stored under laboratory conditions and in a freezer for nine months. In each and every month of storage, the following characteristics were evaluated: moisture content, emergence, emergence speed index, seedling length. The seeds stored in freezer in glass packaging showed the best results for all evaluated parameters, whereas the seeds stored in paper bags at room temperature lost their germination vigor after 120 days of storage. Thus, storage in glass packaging, in freezer, is more appropriate for storing seeds of Mimosa tenuiflora (Willd).

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Physiological and sanitary quality of soybean seeds under different chemical treatments during storage

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n11p1020-1024 ◽

2016 ◽

Vol 20 (11) ◽

pp. 1020-1024 ◽

Cited By ~ 5

Author(s):

Gerusa M. Conceição ◽

Alessandro D. Lúcio ◽

Liliane M. Mertz-Henning ◽

Fernando A. Henning ◽

Manoela Beche ◽

...

Keyword(s):

Chemical Treatment ◽

Seed Quality ◽

Accelerated Aging ◽

Storage Period ◽

Dry Weight ◽

Soybean Seeds ◽

Randomized Design ◽

Seedling Length ◽

Physiological Quality

ABSTRACT The purpose of this study was to evaluate the effect of the chemical treatment with fungicide, insecticide, micronutrient and polymer on physiological and sanitary quality of soybean seeds during storage. The treatments were arranged in a 3 x 5 x 5 factorial scheme (cultivars x seeds treatment x storage period), in completely randomized design with four replicates. Three cultivars were used: NA 4823RG, BMX TurboRR and Fundacep 62RR. The treatments were: T1: no chemical treatment, T2: fungicide, insecticide and micronutrient; T3: fungicide, insecticide, micronutrient and polymer, T4: fungicide; T5: insecticide. After the chemical treatment, the seeds were stored under environmental conditions from May to December 2012, and seed quality was evaluated at 0, 2, 4, 6 and 8 months of storage. Seeds water content and physiological quality were determined through tests of germination, accelerated aging, seedling length, seedling dry weight and sanity. The treatment with fungicides, insecticides, micronutrients and polymer did not affect seed quality over eight months of storage and promoted the control fungi associated with the seeds.

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Storage of soybean seeds treated with chemicals

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n6supl2p2961 ◽

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.

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Quality of Top, Middle and Bottom Buffelgrass Seeds From Different Collecting Sites

Journal of Agricultural Science ◽

10.5539/jas.v11n9p264 ◽

2019 ◽

Vol 11 (9) ◽

pp. 264

Author(s):

Sávio de Oliveira Ribeiro ◽

Maria Caroline Aguiar Amaral ◽

Welluma Teixeira Barros ◽

Arlete da Silva Bandeira ◽

Adriana Dias Cardoso ◽

...

Keyword(s):

Germination Percentage ◽

Semiarid Region ◽

Percentage Germination ◽

Climate Conditions ◽

Significance Level ◽

Tukey Test ◽

Randomized Design ◽

Physiological Quality ◽

Completely Randomized Design

This work aimed to characterize physically and physiologically buffelgrass seeds collected in different municipalities located in the semiarid region of Bahia and at different positions in the panicle. At each site, two hundred mature, whole panicles were collected when seeds were naturally falling. A 5 × 3 factorial in a completely randomized design was used. Factors were five municipalities where seeds were collected and three positions within the panicle (bottom, middle and top portions), with four replicates of 50 seeds for each treatment. Moisture content, dry seed weight, electrical conductivity, germination percentage, germination speed index and emergence speed index were assessed. Data were tested by analysis of variance and Tukey test at 5% of significance level. Soil and climate conditions of each region affect the physiological quality of buffelgrass seeds. Seeds located in bottom and middle portions of the panicle are more vigorous than seeds located in the top portion. The municipality of Poções has better conditions for yielding buffelgrass seeds of better quality than the remaining municipalities.

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