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Bioscience Journal
Article . 2013
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Viabilidade e longevidade de sementes de Tabebuia aurea Benth. & Hook. submetidas a diferentes métodos de armazenamento

Authors: Neves, Graciele; Serigatto, Edenir Maria; Dalchiavon, Flavio Carlos; Silva, Celice Alexandre;

Viabilidade e longevidade de sementes de Tabebuia aurea Benth. & Hook. submetidas a diferentes métodos de armazenamento

Abstract

As sementes de Tabebuia aurea (sin. Handroanthus aureus Mattos), apresentam baixas taxas metabólicas, o que favorece o seu armazenamento em condições de temperaturas negativas e quando armazenadas em temperatura ambiente, há uma progressiva queda em sua viabilidade. Portanto, o objetivo é verificar a viabilidade e longevidade das sementes de Tabebuia aurea submetidas a diferentes métodos de armazenamento. Foram utilizadas no experimento 6100 sementes. Em geladeira foram armazenadas 2400 sementes, das quais 1200 foram acondicionadas em saco plástico transparente e 1200 em saco de papel Kraft. Outras 3600 sementes foram acondicionadas em temperatura ambiente, sendo 1200 sementes em saco plástico transparente, 1200 em saco de papel Kraft e 1200 em bandeja aberta. Para cada tratamento foram utilizadas quatro repetições de 25 sementes, por 12 meses, com delineamento inteiramente casualizado. As médias de germinação, plântulas normais e índice de velocidade de germinação foram transformados em (x +1)-1/2. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey a 5%. Também foram modeladas regressões polinomiais para as variáveis estudas em função dos períodos de armazenamento das sementes. As sementes armazenadas em geladeira à 13 ºC mantiveram elevada germinação, plântulas normais e índice de velocidade de germinação durante os 360 dias de avaliação. O método indicado para o armazenamento de sementes de Tabebuia aurea é em geladeira, à 13 ºC, tanto em saco plástico quanto de papel.

Seeds Tabebuia aurea (syn. Handroanthus aureus Mattos), The seeds of Tabebuia aurea (syn. Handroanthus Mattos aureus), have low metabolic rates, which favors their storage conditions and freezing temperatures when stored at room temperature, there is a progressive decline in viability. Therefore, this study aims to determine the viability and longevity of seeds of Tabebuia aurea subjected to different storage methods. There were used 6100 seeds. In 2400 seeds were stored refrigerator, which in 1200 placed in transparent plastic bag and 1200 in Kraft paper bags. 3600 Other seeds were placed in room temperature and 1200 seeds in clear plastic bag, 1200 in Kraft paper bags and tray open in 1200. For each treatment, four replicates of 25 seeds for 12 months, with design was completely randomized. The average germination, normal seedlings and speed germination index were transformed into (x+1)(-1/2). The data were submitted to ANOVA and means compared by Tukey test at 5%. Also regressions polynomials were modeled for the variables study in function of the periods of storage of the seeds. The seeds stored in the refrigerator at 13 C maintained a high germination rate and normal seedling germination rate during the 360 days of evaluation. The method suitable for the seed storage of Tabebuia aurea is in the refrigerator at 13 degrees C, both in plastic and paper.

Country
Brazil
Keywords

Agricultural Sciences, S, QH301-705.5, Bignoniaceae, Temperature, Germination, Agriculture, Bignoniaceae. germination. temperature, Biology (General), 630, Bignoniaceae. Germinação. Handroanthus. Índice de velocidade de germinação.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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