Qualidade fisiológica de sementes de Sebastiania commersoniana (Baill.) Smith & Downs (branquilho - Euphorbiaceae) durante o armazenamento
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Data
2007-06-01
Autores
Dos Santos, Sérgio Roberto Garcia
De Paula, Rinaldo Cesar [UNESP]
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Resumo
This paper aims to evaluate the physiological quality of Sebastiania commersoniana seeds stored in cloth bag, plastic bag and glass container and kept in two conditions: laboratory workbench and cold chamber (4 ± 2°C e 80% relative humidity - RH) for 531 days. Periodically, samples were taken in order to determine the moisture content and to perform germination tests. The experimental design was completely randomized, in factorial scheme of 3 × 2 (wrappings × conditions), for each period of storage evaluated (0, 158, 271, 389 and 531 days of storage). Supplementary, a polynomial regression was adjusted in order to describe the physiological quality of the seeds for the different conditions during the experimental period. The results lead to the following considerations: a) storage under variable temperature and air humidity (laboratory workbench) can be used for periods of over five and a half months, with the seeds stored in cloth bag, plastic bag or glass container; b) the physiological quality of the seeds was not hardly altered when stored in cold chamber in cloth bag, plastic bag and glass container for over 18 months.
Descrição
Palavras-chave
Forest seeds, Seed conservation, Vigor, Glass container, Atmospheric humidity, Forestry, Physiology, Plastic products, Seed, Containers, Plastic Bags, Seeds
Como citar
Scientia Forestalis/Forest Sciences, n. 74, p. 87-94, 2007.