Hermetically Sealed Storage of Cereal Seeds and its Influence on Vigour and Germination

Guberac, Vlado; Marić, Sonja; Lalić, Alojzije; Drezner, Georg

doi:10.1046/j.1439-037x.2003.00596.x

Cited by 26 publications

(15 citation statements)

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“…Em geral, verifica-se que não houve aumento do teor de água dos grãos de milho armazenados nos silos tipo bolsa, independentemente da temperatura. Esse comportamento pode ser explicado pelo fato de que a hermeticidade dificulta e/ou impede a atividade metabólica tanto dos grãos quanto dos microrganismos (JAYAS, 2000;MORENO et al, 2006 Em se tratando de armazenamento hermético, Guberac et al (2003) avaliaram o comportamento da qualidade fisiológica de sementes de trigo, aveia (Avena sativa L.) e milho (Zea mays L.) armazenadas hermeticamente em containeres de vidro durante 5 anos, com temperatura e umidade relativa do ar controladas. Os autores verificaram que tanto o trigo quanto a aveia não apresentaram variação significativa do percentual de germinação, mas os grãos de milho apresentaram decréscimo significativo após 5 anos de armazenamento.…”

Section: Resultsunclassified

Qualidade de grãos de milho armazenados em silos bolsa

Costa¹,

Faroni²,

Alencar³

et al. 2010

Rev. Ciênc. Agron.

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Resumo -A utilização de bolsas seladas hermeticamente é uma alternativa aos métodos tradicionais de armazenagem de grãos em nível de fazenda. Em vista disso, objetivou-se com este trabalho avaliar a qualidade de milho armazenado hermeticamente em silos bolsa. O produto, com teores de água de 14,5 e 18,0% b.u, foi acondicionado em mini-bolsas devidamente seladas nas temperaturas de 25; 30 e 35 °C. Foram realizadas análises de teor de água, de classificação dos grãos, de massa específica aparente, de percentual de germinação e de condutividade elétrica, no início do armazenamento e após 30; 60; 90; 135 e 180 dias. Verificou-se que não houve variação do teor de água dos grãos de milho armazenados nos silos bolsa. Os grãos de milho foram classificados como Tipo 1 ao longo do período de armazenamento, exceto para os com 18,0% (b.u.) de teor de água na temperatura de 35 ºC. Não houve decréscimo significativo da massa especifica aparente do produto ao longo do armazenamento. Em geral, ocorreu decréscimo do percentual de germinação dos grãos de milho armazenados úmidos e secos e acréscimo da condutividade elétrica da solução que continha os grãos, exceto para os armazenados com 14,5% nas temperaturas de 25 e 30 °C. Conclui-se que é possível armazenar milho em silos bolsa, durante 180 dias, grãos com teor de água de 14,5% (b.u.) nas temperaturas de 25; 30 e 35 ºC e grãos com teor de água de 18,0% por 180 dias nas temperaturas de 25 e 30 ºC. Palavras-chave -Armazenamento hermético. Qualidade fisiológica. Classificação.Abstract -Airtight storage in sealed bags provides an alternative to traditional methods for on-farm grain storage. The objective of this work was therefore to evaluate the quality of corn stored in airtight sealed bags. Grain with moisture content (m.c.) of about 14.5 and 18.0% (w.b.) was properly stored in sealed mini-bags at 25; 30; and 35 °C. Analyses included moisture content, grain classification, apparent specific mass, percentage of germination and electrical conductivity at the beginning of storage and after 30; 60; 90; 135 and 180 days. There was no variation in the moisture content of corn grain stored in the silo bags. Corn was classified as Type 1 during the storage period, except for grain with 18% m.c. at 35 ºC. There was no significant decrease in the apparent specific mass in the grain during storage. In general, the percentage of germination decreased in humid and dry corn stored and the electrical conductivity increased in the solution containing the grain, except for grain stored with 14.5% m.c. at 25 and 30 °C. It is therefore possible to store corn grain in silo bags with 14.5% m.c. at 25; 30 and 35 ºC for 180 days, and grain with 18% m.c. at 25 and 30 ºC for 180 days.

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Section: Resultsunclassified

Qualidade de grãos de milho armazenados em silos bolsa

Costa¹,

Faroni²,

Alencar³

et al. 2010

Rev. Ciênc. Agron.

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“…During storage, seed quality can either remain close to the initial level or reduce to a level which makes the seed unavailable for sowing. This fact is related to several circumstances, such as environmental conditions during seed production, occurrence of pests, oil content in seeds, water content, mechanical damages over the course of processing and packaging, temperature and relative humidity of the air during storage [12][13][14], besides chemical treatment of seeds using insecticides [15,16].…”

Section: Introductionmentioning

confidence: 99%

Physiological potential of soybean seeds treated with thiamethoxam and submitted to storage

Moraes¹,

Braccini²,

Barroso³

et al. 2013

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Bio-activators such as thiamethoxam have been used to increase the productive potential of plants, by means of metabolic and plant morphology modifications. Nevertheless, very little is known regarding the effectiveness of this insecticide when incorporated into lower quality level soybean seeds, particularly during storage. The objective of this work was to assess the influence of thiamethoxam on the physiological potential of soybean seeds with different initial vigor levels during four storage periods. Three vigor levels of cultivar Anta-low (35%), medium (70%) and high (85%) vigor-of soybean seeds were utilized in this experiment. The experimental design was completely randomized in a 3 × 2 × 4 factorial scheme-3 levels of vigor (low, medium and high); 2 seed treatments (with and without thiamethoxam) and 4 storage periods (0, 30, 60 and 90 days). The analyzed variables were: germination, first germination count, accelerated aging test, seedling length and emergence speed index. Thiamethoxam-treated soybean seeds benefit the physiological potential of both medium and high vigor seeds during storage up to 30 days. Whereas, the use of thiamethoxam was shown to be ineffective in improving the physiological quality of initial low vigor seeds.

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“…During storage, seed quality can remain at the initial level or decline to a level that makes the seed unacceptable for planting purpose. This is related to many factors such as environmental conditions during seed production, pests, seed oil content, seed moisture content, mechanical damages of seeds in processing and package, air temperature and relative air humidity during storage (Guberac et al 2003;Heatherly and Elmore 2004;Simic et al 2004). Longevity of seed in storage is influenced by the stored seed quality as well as storage conditions.…”

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confidence: 99%

Positional effects on soybean seed composition during storage

et al. 2011

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This investigation was conducted in order to determine the degree of biochemical changes during natural ageing of soybean seeds borne on different positions on stem axis. Biochemical analysis of field grown soybean seeds revealed significant differences in their oil and protein contents as a function of nodal positions. Both oil and protein content decreased after 180 days of storage (DOS) at all the nodal positions. Proportions of membrane lipids in seeds were less in basal as compared to apical positions and their proportion in stored seeds also decreased with increasing storage periods. The content of starch, total soluble sugars and reducing sugars in seeds decreased during storage for 180 days but it didn't show positional variations in their contents. The extent of lipid peroxidation increased during storage was associated with the corresponding decrease in the activities of antioxidant enzymes viz catalase and peroxidase in seeds. Seeds at basal positions showed higher rate of lipid peroxidation and lower peroxidase activity as compared to apical positions. Results suggest that soybean seeds collected from basal positions showed higher deteriorative changes during storage in comparison to apical positions that might be related to higher lipid content in seeds from basal portion of soybean stem axis as compared to apical portion.

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Hermetically Sealed Storage of Cereal Seeds and its Influence on Vigour and Germination

Cited by 26 publications

References 0 publications

Qualidade de grãos de milho armazenados em silos bolsa

Qualidade de grãos de milho armazenados em silos bolsa

Physiological potential of soybean seeds treated with thiamethoxam and submitted to storage

Positional effects on soybean seed composition during storage

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