Physiological potential of onion seeds stored in different packings and environments

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

ABSTRACT Storage is a fundamental step for maintaining seed quality after processing. Thus, in this study, we evaluated the physiological potential of onion seeds stored in different packings and environments. Impermeable, semi-permeable and permeable packings were tested under natural environment conditions (+19ºC), cold and dry chamber (10±2ºC and 33% RH) and cold chamber (16±2ºC and 60% RH), at 0, 90, 180, 270 and 360 days. The design was completely randomized in a 3x3x5 factorial scheme, with three replicates. In order to evaluate emergency in field, a 3x3 factorial arrangement (packing x environment) was adopted. Onion seeds maintained their physiological quality when stored in impermeable packing for 360 days, regardless of the environment. The seeds' physiological quality was maintained in the other packings when stored in a cold or cold and dry chamber, with viability and vigor above 80% up to 180 days of storage.

Translated abstract

RESUMO O armazenamento é uma etapa fundamental para a manutenção da qualidade das sementes após o beneficiamento. Desta forma, objetivou-se avaliar o potencial fisiológico de sementes de cebola armazenadas em diferentes embalagens e ambientes. Foram testadas as embalagens impermeável, semipermeável e permeável, nas condições de ambiente natural (+19ºC), câmara fria e seca (10±2ºC e 33% de UR) e câmara fria (16±2ºC e 60% de UR), durante 0, 90, 180, 270 e 360 dias. O delineamento foi inteiramente casualizado em esquema fatorial 3x3x5, com três repetições. Para a avaliação da emergência em campo, adotou-se um fatorial 3x3 (embalagem x ambiente). As sementes de cebola mantiveram sua qualidade fisiológica quando armazenadas em embalagem impermeável durante 360 dias, independente do ambiente. A qualidade fisiológica das sementes foi mantida nas demais embalagens quando acondicionadas em câmara fria ou fria e seca, com viabilidade e vigor acima de 80% até os 180 dias de armazenamento.

Related collections

Most cited references 17

Record: found
Abstract: found
Article: found

Is Open Access

Qualidade fisiológica das sementes de soja armazenadas em diferentes condições

Thaís A. de S. Smaniotto, Osvaldo Resende, Kaique Marçal … (2014)

Propôs-se, neste trabalho, avaliar a qualidade fisiológica das sementes de soja ao longo do armazenamento durante 180 dias em diferentes teores de água e em duas condições de temperatura. Foram utilizadas sementes de soja, cultivar CD 242 RR com teores de água iniciais de 12, 13 e 14% (b.u.). As sementes foram adquiridas com o teor de água de 11,0% (b.u.); em seguida, foram umedecidas em câmara BOD a 20 ºC e 85% de umidade relativa, homogeneizadas e acondicionadas em sacos plásticos de polipropileno; as embalagens foram mantidas em dois ambientes distintos. Com vista à avaliação das sementes ao longo do armazenamento foram realizadas as análises de teor de água, germinação, primeira contagem da germinação, índice de velocidade de germinação e condutividade elétrica. O experimento foi conduzido no delineamento inteiramente casualizado, segundo o esquema fatorial triplo 2 x 4 x 3 (duas condições de armazenamento, quatro tempos de armazenamento e três teores de água), com três repetições. O teor de água inicial influencia na qualidade das sementes de soja durante o armazenamento. O ambiente climatizado (20 ºC) proporciona melhores resultados em todas as características estudadas.

0 comments Cited 39 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: found

Is Open Access

Seed storage at elevated partial pressure of oxygen, a fast method for analysing seed ageing under dry conditions

S. Groot, A. Surki, R. de Vos … (2012)

Background and Aims Despite differences in physiology between dry and relative moist seeds, seed ageing tests most often use a temperature and seed moisture level that are higher than during dry storage used in commercial practice and gene banks. This study aimed to test whether seed ageing under dry conditions can be accelerated by storing under high-pressure oxygen. Methods Dry barley (Hordeum vulgare), cabbage (Brassica oleracea), lettuce (Lactuca sativa) and soybean (Glycine max) seeds were stored between 2 and 7 weeks in steel tanks under 18 MPa partial pressure of oxygen. Storage under high-pressure nitrogen gas or under ambient air pressure served as controls. The method was compared with storage at 45 °C after equilibration at 85 % relative humidity and long-term storage at the laboratory bench. Germination behaviour, seedling morphology and tocopherol levels were assessed. Key Results The ageing of the dry seeds was indeed accelerated by storing under high-pressure oxygen. The morphological ageing symptoms of the stored seeds resembled those observed after ageing under long-term dry storage conditions. Barley appeared more tolerant of this storage treatment compared with lettuce and soybean. Less-mature harvested cabbage seeds were more sensitive, as was the case for primed compared with non-primed lettuce seeds. Under high-pressure oxygen storage the tocopherol levels of dry seeds decreased, in a linear way with the decline in seed germination, but remained unchanged in seeds deteriorated during storage at 45 °C after equilibration at 85 % RH. Conclusions Seed storage under high-pressure oxygen offers a novel and relatively fast method to study the physiology and biochemistry of seed ageing at different seed moisture levels and temperatures, including those that are representative of the dry storage conditions as used in gene banks and commercial practice.