Armazenamento do crambe em diferentes embalagens e ambientes: Parte I - Qualidade fisiológica

Abstract

R E S U M OObjetivou-se, neste trabalho, avaliar a qualidade fisiológica das sementes de crambe em diferentes condições de armazenamento, durante nove meses. O crambe com teor de água de 4,63% base úmida foi acondicionado nas embalagens laminada, polietileno tereftalato (PET) e polietileno de alta densidade (PEAD), as quais foram armazenadas nos ambientes: refrigerado, a 10 ± 1,19 °C e 34,84 ± 4,09% UR e natural, a 24,81 ± 1,82 °C e 54,93 ± 12,77% UR. O delineamento utilizado foi o inteiramente casualizado em esquema fatorial triplo (3 x 2 x 4) com três repetições. Os dados foram analisados por meio de análise de variância e regressão. O ambiente natural e a embalagem PET são os que melhor se apresentam para manter a qualidade fisiológica das sementes de crambe por até seis meses de armazenamento. O ambiente natural preserva o vigor de sementes e promove superação da dormência primária logo no terceiro mês de armazenamento. O ambiente refrigerado a 10 °C não é recomendado para o armazenamento das sementes de crambe. Storage of crambe seeds in different containers and environments: Part I -Physiological quality A B S T R A C TThe present study aimed to evaluate the physiological quality of seeds of crambe in different storage conditions for nine months. The crambe with moisture content of 4.63% (wet basis) was placed in the packages laminated, PET and HDPE, which were stored in environments: refrigerated at 10 ± 1.19 °C and 34.84 ± 4.09% relative humidity (RH) and natural at 24.81 ± 1.82 °C and 54.93 ± 12.77% RH. The completely randomized design in triple factorial (3 x 2 x 4) with three replications was used. Data were analysed by analysis of variance and regression. The natural environment and packaging PET containers is best to maintain seed quality of crambe for up to six months of storage. The natural environment preserves the seed vigor and promotes overcome primary dormancy as early as the third month of storage. The refrigerated environment at 10 °C is not recommended for storage of seeds of crambe. Palavras-chave:Crambe abyssinica ambiente refrigerado ambiente natural

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

“…Seeds under these conditions require higher nutrient intakes from their reserves to restore deteriorated membranes and reactivate their metabolism, compromising their vigour (Vanzolini & Nakagawa, 2005). The electrical conductivity values in this work are lower than those presented by other authors (Costa et al, 2012;Oliva, Biaggioni, & Cavariani, 2012;Bessa et al, 2015), but similar to those observed by Bezerra, Biaggioni, Silva, Sperotto, and Brandão (2015). Cruz et al (2013) evaluated five lots of crambe seeds and observed a variation from 58 to 877 mS cm -1 g -1 at different soaking times.…”

Castor Beans Quality Subjected to Different Storage Temperatures and Periods

“…However, this may be a result of the hygroscopic characteristics of the beans and relative humidity variation during the storage. Consequently, phenomena such as sorption and desorption likely occured, as described by Tiecker Junior et al (2014) and Bessa et al (2015) (Table 1). Moreover, throughout the 180 day storage period, the increase in the storage temperature decreased the equilibrium water content of the beans; this occurred because relative humidity decreased as the storage temperature increased and resulted in a lower equilibrium water content (Table 1).…”

Quality of second season soybean submitted to drying and storage

“…With respect to relative humidity, the average value observed was 57.9 %, with a recorded maximum of 83.4 % and minimum of 47.3 %. Table 1 shows the oscillations in the water content of grains during storage, due to its hygroscopicity, and because of the non-controlled temperature and relative humidity that induce the sorption and desorption phenomena (Tiecker Junior et al 2014, Bessa et al 2015. During the 180 days of storage, it was also found that all the treatments exhibited increases in moisture content at 45 and 180 days, possibly because these two assessment points followed periods of higher relative humidity, thereby favoring sorption processes.…”