Armazenamento de sementes de pinhão manso em diferentes embalagens e ambientes

Pinto, Artur Soares; Guimarães, Vandeir Francisco; Dranski, João Alexandre Lopes; Steiner, Fábio; Malavasì, Marlene de Matos; Malavasi, Ubirajara Contro

doi:10.1590/s0101-31222012000400015

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…From the sixth month onwards, there is a lower germination at first count for seeds kept in a laboratory environment. Similar results were obtained by Pinto Junior et al (2012) for seeds in plastic bags at ambient conditions without controlled temperature and relative humidity.…”

Section: Resultssupporting

confidence: 86%

Physiological changes in Jatropha curcas L. seeds during storage

et al. 2016

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-Oil seeds, such as J. curcas, are more prone to deterioration and consequently to loss of quality during storage. In this context, adequate technics for its preservation are of great importance. This study aimed to evaluate the effects of different environments and packaging for the conservation of J. curcas seeds during twelve months of storage. The seeds were placed in three different types of packaging: a multiwall paper bag (or Kraft paper bag); a cloth bag; and a high-density plastic bag. After this, the seeds were stored in three different conditions: a laboratory (23 ± 3 ºC; 64 ± 11% of RH); a refrigerated room (20 ± 2 o C; 55 ± 5% of RH) and a cold chamber (10 ± 2 o C; 55 ± 5% of RH). Initially and thereafter every three months, the physiological qualities (germination and vigor) of the seeds were evaluated. J. curcas seeds packed in the plastic bags and stored in a cold chamber maintained their germination potential during twelve months. There was a decline in the physiological quality of the seeds stored in the laboratory conditions, independent of the packaging used. It was concluded that the most suitable condition for the storage of J. curcas seeds was packing them in plastic bags, placed in a cold chamber (10 ± 2 o C; 55 ± 5% of RH).Index terms: oil seed, physiological quality, conservation.Alterações fisiológicas em sementes de Jatropha curcas L.durante o armazenamento RESUMO -Sementes de oleaginosas, como as de J. curcas, são mais propensas à deterioração e consequente perda de qualidade durante o armazenamento. Nesse contexto, técnicas adequadas para a sua conservação tornam-se importantes. Nesse estudo, objetivou-se avaliar diferentes ambientes e embalagens na conservação de sementes de J. curcas ao longo de doze meses de armazenamento. As sementes foram acondicionadas em diferentes embalagens: saco de papel multifoliado; saco de pano e saco plástico de alta densidade. Em seguida, foram armazenadas em diferentes condições: laboratório (23 ± 3 ºC; 64 ± 11% de UR); sala refrigerada (20 ± 2 o C; 55 ± 5% de UR) e câmara fria (10 ± 2 o C; 55 ± 5% de UR). Inicialmente, e a cada três meses, foram realizadas avaliações da qualidade fisiológica (germinação e vigor) das sementes. Sementes de J. curcas acondicionadas em saco plástico e armazenadas em câmara fria mantiveram seu potencial germinativo por doze meses. Houve redução da qualidade fisiológica das sementes mantidas em ambiente de laboratório independente da embalagem utilizada. Verificou-se que a condição mais adequada para o armazenamento das sementes de J. curcas foi o acondicionamento em saco plástico em câmara fria (10 ± 2 o C; 55 ± 5% de UR).Termos para indexação: sementes oleaginosas, qualidade fisiológica, conservação.

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Section: Resultssupporting

confidence: 86%

Physiological changes in Jatropha curcas L. seeds during storage

et al. 2016

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“…Pinto Junior et al (2012) observed that the seeds stored in glass packaging and refrigerator environment maintained their physiological quality and could be stored for 180 days. For the germination test, no significant effect was observed for the different environments and storage times (90 days, 87% and 180 days, 89%) and packaging (90 days, 87% and 180 days, 90%).…”

Section: Resultsmentioning

confidence: 99%

Effect of Drying Temperature in the Physiological Quality of Jatropha curcas Seeds

Dardengo¹,

Vieira²,

Deminicis³

et al. 2018

JAS

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Stimulating the use of renewable energy instead of fossil fuels, especially biofuels, has become one of the alternatives to the issue of global warming. Of these species listed for the production of biodiesel is the Jatropha curcas crop. The aim of this study was to analyze the drying of the seeds of Jatropha, as well as to verify the effect of the different temperatures on the quality of the product, germination percentage and Emergence speed index (ESI). The experimental design was a completely randomized design, with four replications. Experimental drier was used to test the temperatures of 29, 35, 40, 45 and 50 °C and the data were compared by regression equation. The vigor and germination of the jatropha seeds were little affected as the drying temperatures were increased to 50 °C.

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“…New researches are necessary, in the determination of seedlings quality indexes. One of most used indexes is the Dickson Quality Index (Dickson et al, 1960;Costa et al, 2012;Pinto Júnior et al, 2012), that it considers the distribution of seedlings dry matter. It is also primordial to determine the evapotranspirometric demand and Kc of native species in the initial growth phase, for a suitable irrigation management.…”

Section: Introductionmentioning

confidence: 99%

CROP COEFFICIENT, DRY MATTER PARTITION AND SEEDLINGS QUALITY OF Hymenaea courbaril L. IN CONTAINERS SIZES UNDER WATER DEFICIT IRRIGATION1

2017

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Native species seedlings are commonly used in the degraded areas reforestation, riparian forests and legal reserve. Among the factors that influence the seedlings quality, are the container size and the substrate water availability. Thus, the objective of this paper was to evaluate Hymenaea courbaril L. seedlings response in function of irrigation levels and container sizes. The experiment was carried out in greenhouse, in randomized blocks design, with three replications in split plots, in 2 x 5 scheme. Rigid pots of 3.1 L and stiff plastic tubes of 4.0 L were used in the plots, while irrigation levels equals to 20%, 40%, 60%, 80% and 100% of the maximum evapotranspiration (ETm) were used in the subplots. The stiff plastic tube provided larger ETm and increased seedlings quality and, consequently, larger crop coefficient (Kc) in comparison with rigid pot, in the phase from 80 to 200 days after the sowing (DAS). The Kc of the seedlings in citrovase varired from 0.54 to 1.12, of the planting at 200 DAS, according the Penman-Monteith methodology. Irrigation levels between ETm 86.8% and 100% propitiated larger seedlings quality index. To the 200 DAS, the roots dry matter was larger than the leaves dry matter, unlike the initial phases.

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Armazenamento de sementes de pinhão manso em diferentes embalagens e ambientes

Cited by 9 publications

References 3 publications

Physiological changes in Jatropha curcas L. seeds during storage

Physiological changes in Jatropha curcas L. seeds during storage

Effect of Drying Temperature in the Physiological Quality of Jatropha curcas Seeds

CROP COEFFICIENT, DRY MATTER PARTITION AND SEEDLINGS QUALITY OF Hymenaea courbaril L. IN CONTAINERS SIZES UNDER WATER DEFICIT IRRIGATION1

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