Physiological quality of sesame seeds during storage

Lima, Denise de Castro; Dutra, Alek Sandro; Camilo, Juliana de Mesquita

doi:10.1590/s1806-66902014000100017

Cited by 17 publications

(15 citation statements)

References 9 publications

(8 reference statements)

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“…Accordingly, the percent age of metabolically active seeds of P. napostaense decreased while that of dormant and dead seeds increased with increasing age. These results agree with those for other plant species [25][26][27], and are the most likely the result of seed storage conditions [24].…”

Section: Discussionsupporting

confidence: 90%

The TTC-technique might not appropriately test the physiological stage of plant tissues

Busso

Torres

Ithurrart

et al. 2015

Russ J Plant Physiol

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The 2,3,5 triphenyltetrazolium chloride (TTC) technique has been used during decades to distin guish between dead and alive tissues of perennial grasses. This technique did not consider, however, that dormant (i.e., viable) tissues could exist within those erroneously considered dead tissues, thus being unable to report the true physiological stage of those plant tissues. Development of a procedure able to distinguish between metabol ically active or dormant or dead tissues is then critical. This study developed a procedure to classify plant tissues of perennial grasses (Poa ligularis (Nees ex Steud.), Nassella longiglumis (Phil.) Barkworth, Amelichloa ambigua (Speg.) Arriaga & Barkworth, and Piptochaetium napostaense (Speg.) Hack.) in a more appropriate physiologi cal stage (i.e., metabolically active, dormant or dead) than the traditional TTC technique. Perennial grass seeds or meristematic buds were immersed in a TTC solution to obtain metabolically active (red or pink staining) or unstained (either dormant or dead) tissues. TTC unstained tissues were placed in Evans Blue solution to sepa rate dormant from dead tissues. The combination of TTC and Evans Blue techniques allowed the separation of metabolically active, dormant or dead tissues. Use of Evans Blue on TTC unstained seeds and buds allowed to determine that some of these tissues were not dead but dormant (i.e., viable). Among the TTC unstained tissues between 2 to 35% of total grass seeds and from 19.5 to 42% of all evaluated buds were dormant (viable and poten tially able to growout) but not dead. Combination of TTC and Evans Blue techniques allowed a better classifi cation of the physiological stages of plant tissues (metabolically active, dormant or dead) than the conventional TTC test.

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Section: Discussionsupporting

confidence: 90%

The TTC-technique might not appropriately test the physiological stage of plant tissues

Busso

Torres

Ithurrart

et al. 2015

Russ J Plant Physiol

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“…The type of packaging materials cannot influence on the moisture content of sesame over storage period (Table 1). Lima et al (2014) demonstrated that the PET bottles packaging applied to laboratory environment and freezer environment show uniform averages with minor variations for water content because the impermeable packing (plastic bottle) is able to isolate the seed from the influence of the external surroundings (air), not allowing moisture exchange with the environment. However, in current experiment, the moisture content was not significantly different among packaging materials, except numerically higher in woven polypropylene bag, it may be due to the relative humidity of natural condition in laboratory which was not high enough to influence the effect of type of packages.…”

Section: Seed Moisture Contentmentioning

confidence: 99%

Effect of Different Packaging Materials and Storage Environments on Seed Quality of Sesame (Sesamum Indicum L.)

Nyo¹,

Htwe²,

Win³

2019

JBLS

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The speed of the deterioration of oil-seeds depends on conditions of the storage environment and understanding dormancy release time is important to increase the amount and uniformity in germination. Therefore, the present study was conducted to evaluate the effect of different packaging materials and storage environments on viability and dormancy of sesame. The black sesame seed was stored in three packaging materials (woven polypropylene bag, IRRI super bag, metal bin) under two environment conditions (ambient and cold storage) for eight-month (initial storage, 2-month, 4-month, 6-month and 8-month). The effect of storage environments, packaging materials and storage durations on germination percentage, germination index, seedling vigor index I and II were significant. The moisture content decreased in the early parts of storage periods and then increased in later. The moisture content of seeds in the packaging materials increased in long storage due to the effect of seed respiration and heat accumulation in a package. Higher viability was observed in ambient storage, and in a woven polypropylene bag. Because the dormancy release was slow in low- temperature condition and the carbon dioxide concentration in the airtight package inhibited the dormancy break. It also increased during storage and the earliest fully dormancy break has occurred in six-month of woven polypropylene bag storage under ambient condition. Therefore, the germination and dormancy release of sesame were influenced by storage environments packaging materials and storage durations.

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“…Conditions of low temperature and low relative humidity of the air enable the reduction of the seed respiratory activity and, consequently, the speed of the deterioration process (Carvalho and Nakagawa, 2012;Lima et al, 2014;Smaniotto et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Pre-packing cooling and types of packages in maintaining physiological quality of soybean seeds during storage

et al. 2016

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Seeds storing under appropriate conditions reduces the speed of the seeds deterioration process. The aim of this study was to evaluate pre-packing cooling and types of packages in the maintenance of the physiological quality of soybean seeds during storage. The completely randomized experimental design was used, with four replications, considering a factorial arrangement involving or not the pre-packing cooling of the seed mass, three types of packages (multi-layer paper bag, big bag, and polyethylene container), and five storing periods (0, 2, 4, 6 and 8 months). The physiological quality was evaluated by the tests of first germination count, germination, accelerated aging, electrical conductivity, emergence speed index and emergence. The use of packages with larger amount of seeds (big bag and polyethylene container) did not favor the maintenance of the pre-packing cooling temperature. The types of packages did not show significant differences in the seeds viability during storage, up to eight months, regardless the pre-packing cooling. The cultivars seeds showed different tolerance to storing, i.e. seeds of the cultivar TMG 1176 had lower storing potential comparing to the seeds from the cultivar SYN 9074.Index terms: germination, Glycine max, storability, storing conditions, vigor.Resfriamento pré-envase e tipo de embalagem na manutenção da qualidade fisiológica de sementes de soja ao longo do armazenamento RESUMO -O armazenamento de sementes sob condições adequadas reduz a velocidade do processo de deterioração de semente. O objetivo com o trabalho foi avaliar o resfriamento pré-envase e tipos de embalagem na manutenção da qualidade de sementes de soja ao longo do armazenamento. Utilizou-se o delineamento experimental inteiramente casualizado com quatro repetições, em arranjo fatorial envolvendo ou não o resfriamento da massa de sementes antes do envase, três tipos de embalagens (sacaria de papel multifoliado, big bag e contêiner em polietileno) e cinco épocas de armazenamento (0, 2, 4, 6 e 8 meses). A qualidade fisiológica foi avaliada por meio de testes de primeira contagem de germinação, germinação, envelhecimento acelerado, condutividade elétrica, índice de velocidade de emergência e emergência. O uso de embalagens com maiores quantidades de sementes (big bag e contêiner) não favoreceu a manutenção da temperatura do resfriamento pré-envase. Os tipos de embalagem não proporcionaram diferenças na viabilidade de sementes de soja ao longo do armazenamento, até oito meses, independente do resfriamento antes do envase. As sementes das cultivares apresentaram diferentes tolerâncias ao armazenamento, sendo que as sementes da cultivar TMG 1176 RR possuem menor potencial de armazenamento em relação às sementes da cultivar SYN 9074 RR.Termos para indexação: armazenabilidade, condições de armazenamento, germinação, Glycine max, vigor.

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Physiological quality of sesame seeds during storage

Cited by 17 publications

References 9 publications

The TTC-technique might not appropriately test the physiological stage of plant tissues

The TTC-technique might not appropriately test the physiological stage of plant tissues

Effect of Different Packaging Materials and Storage Environments on Seed Quality of Sesame (Sesamum Indicum L.)

Pre-packing cooling and types of packages in maintaining physiological quality of soybean seeds during storage

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