Comparação entre métodos para a avaliação do vigor de lotes de sementes de triticale

Steiner, Fábio; Oliveira, Silvia Sanielle Costa de; Martins, Cibele Chalita; Cruz, Sihélio Júlio Silva

doi:10.1590/s0103-84782011005000011

Cited by 18 publications

(24 citation statements)

References 3 publications

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“…This similarity values is essential so that the tests are not affected by differences in metabolic activity and seed wetting speed. It is recommended that there are no differences greater than 2% of water content in the seed samples (STEINER et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Processing in the Quality of Tanzania Grass Seeds

et al. 2016

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ABSTRACT:The available research concerning the processing of grass seeds is scarce, despite its fundamental importance for national and international agribusiness. The objective of this project was to evaluate the effects of processing phases on the physical and physiological quality of tanzania grass seeds for commercialization purposes. Seeds were sampled before processing and after leaving the air and screen machine (upper and intermediate screens and bottom); first gravity table (drift, upper and intermediate spouts); treating machine; second gravity table (upper, intermediate, and lower spouts). Seeds were evaluated as to water content, physical quality (purity and 1,000 seeds weight) and physiological (germination, first count of germination, seedling vigor rating, seedlings length of primary roots and shoots, seedling emergence in the field, and emergence speed index). The processing of Tanzania grass seeds in the air screen cleaner machine and gravity table are efficient to improve the physical quality of the lot. The seed treatment with dye ink reduces the seedlings emergence speed in the field. The processing is not required to meet the national commercialization standards of the Tanzania grass seeds, but for the international.

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Section: Resultsmentioning

confidence: 99%

Processing in the Quality of Tanzania Grass Seeds

et al. 2016

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“…Another quick vigor test is the electrical conductivity test, which indirectly assesses seed quality and is based on the concentration of electrolytes leaked by seeds during imbibition, providing reliable results within 24 hours for seeds of some winter forage grasses, such as ryegrass (LOPES; FRANKE 2010), triticale (STEINER et al, 2011) and black oat (NOGUEIRA et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the tests that efficiently assess the seed physiological potential should be identified for each species, thereby enabling obtaining consistent and reproducible results (LOPES; FRANKE, 2010;MARCOS-FILHO, 2015;STEINER et al, 2011). Quality control laboratories usually perform several vigor tests simultaneously, in addition to the germination test, to classify seed lots safely into different levels of physiological quality (SOARES et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Vigor tests in assessing the quality of signal grass seeds

Melo

Jeromini

Affonso

et al. 2017

SCA

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The correct assessment of the physiological quality of seed lots is necessary for the quality control program of companies. For such purpose, tests that detect differences in the physiological potential of seed lots and that meet the minimum market requirements. Thus, the study was conducted towards assessing the efficiency of laboratory tests in differentiating the quality of Brachiaria brizantha cv. Xaraés seed lots. Seeds from nine lots were assessed regarding water content, germination, first germination count, electrical conductivity and seedling emergence in sand in the laboratory (normal seedlings, first count and germination rate index), and the results were compared with those from the seedling emergence test conducted in the field. The experimental design used was completely randomized, with four replicates, and the Pearson correlation coefficient between the values from the germination, vigor and field seedling emergence tests was determined. The germination and seedling emergence in sand tests and the seedling emergence rate index efficiently assess the physiological quality of Brachiaria brizantha cv. Xaraés seed lots, providing data similar to those from seedling emergence in the field. Key words: Brachiaria brizantha. Germination. Forrage grass. Vigor tests. ResumoA avaliação correta da qualidade fisiológica dos lotes de sementes é necessária para o programa de controle de qualidade das empresas, para isso se utiliza testes que detectam diferenças no potencial fisiológico de lotes e que atendam às exigências mínimas para a comercialização. Assim, o trabalho foi conduzido com o objetivo de verificar a eficiência de testes de laboratório na diferenciação da qualidade dos lotes de sementes de Brachiaria brizantha cv. Xaraés. As sementes de nove lotes foram avaliadas quanto ao teor de água, germinação, primeira contagem de germinação, condutividade elétrica, emergência de plântulas em areia no laboratório (plântulas normais, primeira contagem e índice de velocidade de emergência) e os resultados comparados aos obtidos no teste de emergência de plântulas em campo. O delineamento experimental utilizado foi o inteiramente casualizado, com quatro repetições e determinado o coeficiente de correlação de Pearson entre os valores obtidos nos testes de germinação e de vigor e o teste de emergência em campo. O teste de germinação, emergência de plântulas em areia e índice de velocidade de emergência de plântulas em areia são eficientes na avaliação da qualidade fisiológica de lotes de sementes de Brachiaria brizantha cv. Xaraés, fornecendo informações equivalentes à emergência de plântulas em campo. Palavras-chave: Brachiaria brizantha. Germinação. Gramíneas forrageiras. Testes de vigor.

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“…The electrical conductivity test was efficient to differentiate temperate grass seed lots, such as black oat and triticale (STEINER et al, 2011;NOGUEIRA et al, 2013). The results were quickly obtained since the tests demanded between 16 and 20 hours for black oat seeds (NOGUEIRA et al, 2013) and 48 hours for triticale (STEINER et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The results were quickly obtained since the tests demanded between 16 and 20 hours for black oat seeds (NOGUEIRA et al, 2013) and 48 hours for triticale (STEINER et al, 2011). The cold test without soil and that of the accelerated aging test at 41 °C for 96 hours were efficient in classifying sorghum lots as to vigor and respective seedling emergence in the field performance (SOARES et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation the physiological quality of Brachiaria brizantha cv. BRS ‘Piatã’ seeds

Silva¹,

Martins²,

Cruz³

et al. 2017

Biosci. J.

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ABSTRACT:In a quality control program, seed vigor evaluation is of fundamental importance for the success of the program. The objective of this project was to evaluate the efficiency of several vigor tests to evaluate the physiological quality of Brachiaria brizantha cv. 'BRS Piatã' seed lots and to preview seedling emergence in the field. Ten grass seed lots of the B. brizantha cv. 'BRS Piatã' were evaluated by the following tests: germination, first count of germination, accelerated aging (43 °C/48 hours), cold test (seeds rolled in paper towel), seed water content before and after accelerated aging, electrical conductivity (50 and 75 mL, 25 °C and readings made 2, 4, 6, 8, and 24 hours after beginning the test), speed of germination index, and seedling emergence in sand substratum in the laboratory (26 ± 3 °C) and daily seedling counts between the 7th and the 21th day after sowing. The treatment replications were distributed in the laboratory according to a completely random design with four replications. Seedling emergence in the field data were analyzed according to a randomized complete block design. Treatment means were compared by the Scott Knott test, at the 5% level of probability. The tests for germination and first germination count, seedling emergence and first emergence count in the sand, and accelerated aging are useful to assess the vigor of seed batches of the piatã grass, and provide similar evidence to the seedling emergence in the field.

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Comparação entre métodos para a avaliação do vigor de lotes de sementes de triticale

Abstract: RESUMO Dentro de um programa de controle de qualidade, a avaliação do vigor de sementes é fundamental e necessária

Cited by 18 publications

References 3 publications

Processing in the Quality of Tanzania Grass Seeds

Processing in the Quality of Tanzania Grass Seeds

Vigor tests in assessing the quality of signal grass seeds

Evaluation the physiological quality of Brachiaria brizantha cv. BRS ‘Piatã’ seeds

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