Efeitos do ambiente de armazenamento na qualidade de sementes de sorgo-sudão

Toledo, Mariana Zampar; Cavariani, Cláudio; Nakagawa, João; Alves, Elza

doi:10.1590/s0101-31222007000200007

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…These results corroborate those obtained for sudangrass (Sorghum sudanense) seeds, in which the refrigerator and freezer environments, followed by the dry chamber, led to more adequate conservation than the natural laboratory environment, which had faster loss of vigor (Toledo et al, 2007;Toledo et al, 2013). In black oat seeds, the refrigerator and freezer environments were also more favorable for conservation than the dry chamber environment and natural environment (Nakagawa et al, 2004).…”

Section: Dry Chambersupporting

confidence: 85%

“…The data on moisture content of the seeds stored in the four different environments for the period of six years in the natural laboratory environment and dry chamber and for twelve years in the refrigerator and freezer are shown in Table 1. The moisture contents varied in the different environments due to the seeds being stored in porous packaging, which facilitates hygroscopic equilibrium in accordance with relative humidity (Toledo et al, 2007;Toledo et al, 2013;Costa et al, 2015). The seeds stored in the different environments had mean moisture contents of 9.9, 9.7, 5.9 and 13.2% for the natural laboratory environment, dry chamber, refrigerator, and freezer, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Influence of the storage environment on the physiological quality of millet seeds (Pennisetum glaucum (L.) R. Br.)

Silva

Toledo²,

Teixeira

et al. 2019

J. Seed Sci.

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Millet is a species of the grass family used in cattle pastures, for hay, for silage, and in soil cover in no-tillage systems. However, studies on seed production and post-harvest techniques for this species have not been sufficiently developed, considering the demand for and potential of this crop. The objective of this study was to monitor the physiological quality of millet seeds stored in porous packaging. Millet seeds were stored under four ambient conditions (natural laboratory environment, dry chamber, refrigerator, and freezer). Physiological quality was evaluated by germination and vigor tests before and during storage each year, up to six years for the dry chamber and natural laboratory environment, and up to 12 years for the refrigerator and freezer. Analysis of variance was conducted on the data, which were in 4 × 6 and 2 × 12 (environment and storage period) factorial arrangements. The means of the environments were compared by the Tukey test (p ≤ 0.05) and the storage periods by regression analysis. The germination capacity of millet seeds is best conserved in a refrigerator and freezer, and they remain viable for up to twelve years of storage under these conditions.

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Section: Dry Chambersupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Influence of the storage environment on the physiological quality of millet seeds (Pennisetum glaucum (L.) R. Br.)

Silva

Toledo²,

Teixeira

et al. 2019

J. Seed Sci.

Self Cite

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“…Um dos fatores que mais influenciam a germinação e vigor das sementes é o armazenamento, Toledo (2007) afirma que a capacidade de conservação de sementes de S. sudanense está relacionada com a sua qualidade inicial dependente da sua origem, além disso, outros danos tais como ataque de patógenos e problemas com temperatura podendo comprometer um lote de sementes bem como a produtividade forrageira.…”

Section: Methodsunclassified

AVALIACAO DA QUALIDADE FISIOLOGICA DE DIFERENTES LOTES COMERCIAIS DE SEMENTES DE CAPIM SUDAO (Sorghum sudanense)

Muraro¹,

Gabriel²,

Kirsch³

et al. 2017

Agrotropica

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O capim-sudão, (Sorghum sudanense) vem ganhando destaque por apresentar maior flexibilidade de épocas de plantio, principalmente em épocas de escassez de alimento. O objetivo do trabalho foi verificar a qualidade fisiológica de lotes comerciais de sementes de Sorghum sudanense na região do médio alto Uruguai -Rio Grande do Sul, Brasil. Foram realizados testes de germinação (G) primeira contagem (PC), teste de frio (TF), envelhecimento acelerado (EA), teste de tetrazólio (TZ), massa seca (MS) e massa verde de plântulas (MV), comprimento de parte aérea (CPA) e raiz (CR), sementes mortas (SM), sementes duras (SD) plântulas anormais (AN) e sanidade das sementes. Os resultados foram submetidos à análise de variância, e as médias comparadas entre si pelo teste de Tukey a 5% de probabilidade. Os testes PC, EA, SM e TZ foram os que melhor estratificaram os lotes. Já os demais testes não foram eficientes para identificar a qualidade fisiológica dos lotes. Os testes realizados mostraram claramente a baixa qualidade fisiológica das sementes nos lotes avaliados, demonstrando que estes não estão seguindo os padrões exigidos pela legislação vigente.Palavras-chave: germinação, estabelecimento, potencial produtivo. Evaluation of the physiological quality of different commercial lots of seeds of Sudan grass (Sorghum sudanense).The Sudan grass (Sorghum sudanense) has been gaining prominence due to the greater flexibility of planting times, especially in times of food scarcity. The objective of this work was to verify the physiological quality of commercial seed lots of Sorghum sudanense in the region of the upper middle Uruguay -Rio Grande do Sul, Brazil. The germination tests (G) were first counted (PC), cold test (TF), accelerated aging (EA), tetrazolium test (TZ), dry mass (DM) and green seedling mass (CPA) and root (CR), dead seeds (SM), hard seeds (SD), abnormal seedlings (AN) and seed health. The results were submitted to analysis of variance, and the means were compared by the Tukey test at 5% of probability. The PC, EA, SM and TZ tests were the ones that best stratified the batches. The other tests were not efficient to identify the physiological quality of the lots. The tests performed clearly showed the low physiological quality of the seeds in the evaluated lots, demonstrating that they are not following the standards required by the current legislation.

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“…Under natural environment conditions, moisture content may vary depending on oscillations in relative humidity and, along with temperature variations, can determine deterioration rates in seeds and physiological quality losses. According to Toledo et al (2007), in the first stage of this study, storage of sudangrass seeds in frost free e freezer environments improves physiological quality. Similarly, Nakagawa et al (2004) found that maintaining seeds in frost free and freezer conditions can preserve physiological quality of black oat seeds compared to storage in dry chamber.…”

Section: The Equation Adjusted To Mean Germinationmentioning

confidence: 99%

Extended Storage of Sudangrass Seeds

Toledo¹,

Cavariani²,

Nakagawa³

et al. 2013

Revista Brasileira de Milho e Sorgo

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RESUMO -O sorgo-sudão se destaca por sua tolerância à seca e estresse salino. No entanto, estudos sobre produção de sementes e técnicas de pós-colheita são insuficientes considerando-se a demanda e o potencial desta cultura. Este estudo objetivou monitorar a qualidade fisiológica de sementes de sorgo-sudão armazenadas em diferentes condições ambientais por um período de 18 meses. As sementes de sorgo-sudão foram armazenadas sob quatro condições (ambiente natural, câmara seca, geladeira frost free e freezer). A qualidade fisiológica foi avaliada por testes de germinação e vigor antes e durante o armazenamento, semestralmente, até 18 meses. Os dados foram submetidos à análise de variância e analisados em esquema fatorial 4 x 4, com médias de ambientes comparadas pelo teste de Tukey (p≤0,05) e períodos de armazenamento por análise de regressão. A velocidade a porcentagem de emergência de plântulas de sorgo-sudão são reduzidas a partir de 15 meses de armazenamento das sementes enquanto que a germinação, o desenvolvimento das plântulas e o peso são preservados até 18 meses. O armazenamento das sementes em ambiente natural ocasiona decréscimo no vigor mais rapidamente do que em câmara seca, geladeira e freezer, apesar do maior crescimento das plântulas nesta condição comparativamente às demais.Palavras-chave: Sorghum sudanense; germinação; conservação; qualidade fisiológica. ARMAZENAMENTO PROLONGADO DE SEMENTES DE SORGO-SUDÃOABSTRACT -Sudangrass stands out for being tolerant to drought and saline stress. However, studies on production of seeds and post-harvest technologies are insufficient considering both the demand and potential of this crop. This study aimed to monitor physiological quality of sudangrass seeds stored under different environmental conditions for a period of 18 months. Sudangrass seeds were stored under four conditions (natural environment, dry chamber, frost free, freezer). Physiological quality was assessed before storage and then every semester until 18 months by germination and vigor tests. Variance tests were applied for statistical analysis and means were compared as a 4 x 4 factorial.

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Efeitos do ambiente de armazenamento na qualidade de sementes de sorgo-sudão

Cited by 3 publications

References 4 publications

Influence of the storage environment on the physiological quality of millet seeds (Pennisetum glaucum (L.) R. Br.)

Influence of the storage environment on the physiological quality of millet seeds (Pennisetum glaucum (L.) R. Br.)

AVALIACAO DA QUALIDADE FISIOLOGICA DE DIFERENTES LOTES COMERCIAIS DE SEMENTES DE CAPIM SUDAO (Sorghum sudanense)

Extended Storage of Sudangrass Seeds

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