PHYSICAL CHARACTERISTICS AND GERMINATION OF Dyckia goehringii Gross & Rauh (BROMELIACEAE) SEEDS UNDER DIFFERENT TEMPERATURES

Authors

  • Edson Ferreira Duarte
  • Iraídes Fernandes Carneiro Universidade Federal de Goiás
  • Natan Fontoura da Silva Universidade Federal de Goiás
  • Noga Neve Ribeiro Guimarães Universidade Federal de Goiás

Keywords:

Dyckia goehringii, seed vigour and size, imbibition

Abstract

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.

KEY-WORDS: Dyckia goehringii; seed vigour and size; imbibition.

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Author Biography

Edson Ferreira Duarte

Graduado em Agronomia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1997) , mestrado em Ciências Biológicas (Botânica) pela Universidade Estadual Paulista Júlio de Mesquita Filho (2001) e doutorado em Agronomia pela Universidade Federal de Goiás (2007) . Atualmente é Professor substituto da Universidade Federal de Goiás. Tem experiência na área de Botânica , com ênfase em Fisiologia Vegetal. Atuando principalmente nos seguintes temas: Bromeliaceae, Fenologia, Propagação, Sementes, Cultivo

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Published

2010-11-26

How to Cite

DUARTE, E. F.; CARNEIRO, I. F.; SILVA, N. F. da; GUIMARÃES, N. N. R. PHYSICAL CHARACTERISTICS AND GERMINATION OF Dyckia goehringii Gross & Rauh (BROMELIACEAE) SEEDS UNDER DIFFERENT TEMPERATURES. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 40, n. 4, p. 422–429, 2010. Disponível em: https://revistas.ufg.br/pat/article/view/6037. Acesso em: 17 jul. 2024.

Issue

v. 40, n. 4, Oct./Dec. 2010

Section

Crop Science

License

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