Características físicas e germinação de sementes de Dyckia goehringii Gross & Rauh (Bromeliaceae) sob diferentes temperaturas
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Data
2010-12
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Editor
Alexsander Seleguini
Resumo
Dyckia goehringii is a bromeliad native from Cerrado
(Brazilian savannah). Despite its high ornamental value, because
of the silvery appearance of its leaves, it is not yet commercialized
due to lack of information on its conservation and agronomic
employment. The present investigation aimed to appraise the
physical and physiological performance of seeds, during the
imbibition and germination period, under several temperatures,
as well as to establish temperature parameters for germination
tests. The moisture content and the fresh and dry mass content
of one hundred seeds were determined. The imbibition capacity,
germination and vigour of seeds and seedlings of large and small
seeds were observed under temperatures of 20°C, 25°C, 30°C,
and 35°C. The results showed that there are no obstructions to
water absorption and that this feature is influenced by seeds size.
The best vigour and germination rate were observed to large
seeds, which produce more vigorous seedlings than small seeds,
mainly at 30°C, and germination tests should be carried out on
the 7th and 14th days after sowing.
Descrição
Palavras-chave
Dyckia goehringii, Vigor e tamanho de semente, Embebição, Seed vigour and size, Imbibition
Citação
DUARTE, Edson Ferreira; CARNEIRO, Iraídes Fernandes; SILVA, Natan Fontoura da; GUIMARÃES, Noga Neve Ribeiro. Características físicas e germinação de sementes de Dyckia goehringii Gross & Rauh (Bromeliaceae) sob diferentes temperaturas. Pesquisa Agropecuária Tropical, Goiânia, v. 40, n. 4, p. 422-429, out./dez. 2010. Disponível em: <https://www.revistas.ufg.br/pat/article/view/6037>.