Superação de dormência de sementes e crescimento inicial de plântulas de umbuzeiro
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Data
2012-08
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Resumo
Pre-germination treatments such as scarification and the use of growth regulators can provide the
overcoming of dormancy in seeds and enhance the emergence and development of seedlings. The aim
of this study was to determine appropriate treatments to overcoming seed dormancy and enhance the
initial growth of seedlings of Spondias tuberosa. We used a randomized design in factorial 2 x 4, with
the following factors: seeds scarified or not scarified and then soaked in water or aqueous solutions of
gibberellin, cytokinin and ethylene, with 4 replicates and 15 seeds. There was no significant interaction
between scarification treatments and use of growth regulators. Mechanical scarification and soaking of seed of umbuzeiro in solutions containing growth regulators does not increase the percentage of
seedling emergence, however soaking in a solution of Ethrel at 100 ppm provides higher speed of
emergence and root development.
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Palavras-chave
Spondias tuberosa Arr. Câmara, Escarificação de sementes, Reguladores de crescimento, Etileno, Spondias tuberosa Arr. Câmara, Ethylene, Growth regulators, Seed scarification
Citação
MELO, Aniela Pilar Campos de; SELEGUINI, Alexsander; CASTRO, Martha Nacimento; MEIRA, Flavia de Andrade; GONZAGA, Janete Motta da Silva; HAGA, Kuniko Iwamoto. Superação de dormência de sementes e crescimento inicial de plântulas de umbuzeiro. Semina. Ciências Agrárias, Londrina, v. 33, p. 1343-1350, jul./ago. 2012.