Germinability after desiccation, storage and cryopreservation of seeds from endemic Encholirium Mart. ex Schult. & Schult. f. and Dyckia Schult. & Schult. f. species (Bromeliaceae)
(Germinability after desiccation, storage and cryopreservation of seeds from endemic Encholirium Mart. ex Schult. & Schult. f. and Dyckia Schult. & Schult. f. species (Bromeliaceae)). Seed storage procedures require previous determination of optimal temperature and light conditions for germination, as well as of tolerance to desiccation and low temperatures. The aim of this paper was to study the effects of desiccation, storage at low temperatures and cryopreservation on the germinability of seeds of six Encholirium and two Dyckia species, which were selected according to vulnerability criteria. Initial germinability of newly harvested seeds varied from 35 to 95%. Seeds presented photoblastic behaviour since light was necessary to induce or increase germination. Except for E. heloisae and E. scrutor, desiccation did not affect significantly the germinability of tested seeds. Storage for one year at 4 and -20 ºC did not affect the germinability of desiccated seeds, except for E. pedicellatum. Germinability after freezing in liquid nitrogen was higher than or similar to control seeds for all species. However, freezing tolerance of E. pedicellatum seeds was only achieved after desiccation to 2.5% moisture content. As regards tolerance to desiccation and to storage at low temperatures, the seeds studied here can be classified as orthodox and conserved ex situ.
Main Authors: | Tarré,Erika, Pires,Bárbara Balzana Mendes, Guimarães,Ana Paula Mançano, Carneiro,Leonardo Alves, Forzza,Rafaela Campostrini, Mansur,Elisabeth |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedade Botânica do Brasil
2007
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000400003 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Antiulcer activity of ethanolic extract of Encholirium spectabile Mart. ex Schult & Schult f. (Bromeliaceae) in rodents
by: Moraes de Carvalho,Katharinne I, et al.
Published: (2010) -
Anatomia da raiz de espécies de Dyckia Schult. f. e Encholirium Mart. ex Schult. & Schult. f. (Bromeliaceae, Pitcairnioideae) da Serra do Cipó (Minas Gerais, Brasil), com especial referência ao velame
by: PITA,PATRÍCIA B., et al.
Published: (2002) -
AVALIAÇÃO DO POTENCIAL FISIOLÓGICO DE SEMENTES DE Encholirium spectabile Mart. ex Schult. & Schult. f.
by: Araújo,Ariana Veras de, et al.
Published: (2018) -
Cryopreservation of seeds of Encholirium spectabile Martius ex Schultes f. by the vitrification method
by: Ferrari,Edilene Aparecida Preti, et al.
Published: (2016) -
Anatomia floral de Aechmea distichantha Lem. e Canistropsis billbergioides (Schult. & Schult.f) Leme (Bromeliaceae)
by: Oliveira,Fernanda Maria Cordeiro de, et al.
Published: (2016)