Results 131 to 140 of about 199 (152)

Structural Variability of the Tapetum of Dyckia Strehliana (Bromeliaceae)

2022
Tapetal tissue plays essential roles in the formation of generative cells, as it is related to their nutrition and development in anthers. Among the few species of Bromeliaceae for which tapetal tissue has been describe, most have a secretory tapetum and one has an invasive tapetum. This study analyzed the developmental stages of the anthers of Dyckia
Roberta Maidana da Silva, João Marcelo Santos de Oliveira   +1 more
openaire   +1 more source

Taxonomic review of the Dyckia remotiflora complex (Bromeliaceae, Pitcairnioideae)

Phytotaxa
Several species complexes of Dyckia s.s. have been investigated in recent years, with the taxonomy of the genus regarded as one of the most challenging within the family. In this study, we propose the circumscription of the Dyckia remotiflora complex and present a taxonomic-nomenclatural revision for the included taxa: D. remotiflora var.
Büneker, Henrique Mallmann, Carvalho, Jordano Dorval Tavares De, Witeck-Neto, Leopoldo, Mariath, Jorge Ernesto De Araujo   +3 more
openaire   +1 more source

Structural anomalies in pollen grains of Dyckia racinae L.B.Sm. (Bromeliaceae)

Brazilian Journal of Botany, 2020
The development of the pollen grains is a complex and regulated process. However, failures in sporogenesis and gametogenesis are common and include cell division errors and multiple structural modifications, culminating usually in abortions or, less frequently, in formation of anomalous pollen grains.
Jordano Dorval Tavares de Carvalho, João Marcelo Santos de Oliveira   +1 more
openaire   +1 more source

Leaf morphoanatomy of the rheophyte Dyckia distachya Hassler (Bromeliaceae)

2009
This research reports on the leaf morphoanatomy of the rheophyte Dyckia distachya. Plants with young and mature leaves of three populations from the Pelotas River and Uruguay River (SC, Brazil), which were maintained in a greenhouse, were utilized in the study. The leaves of D. distachya have sheaths, and the blades are lanceolate with serrate margins.
Heinig Voltolini, Caroline, Reis, Ademir, Santos, Marisa   +2 more
openaire   +2 more sources

Ex situ conservation of Dyckia distachya on South Brazil

The Brazilian Atlantic Forest biome contains a high level of genetic diversity. Historically, several factors have contributed to the drastic reduction of its coverage, which is now restricted to less than 7%. Large forest areas have been cut down in Santa Catarina and Paraná states to make way for hydroelectric power plant dams, and many plant species
Marcelo F. Pompelli, Marvin José Perneth-Montaño, Ana Milena Vásquez-Bettin, Miguel Pedro Guerra   +3 more
openaire   +1 more source

Dyckia inflexifolia(Bromeliaceae), a New Species from Brazil

Annales Botanici Fennici, 2012
A new species, Dyckia inflexifolia Guarconi & MA. Sartori (Bromeliaceae), is described and illustrated as a species restricted in the ferruginous rocky soils vegetation in the municipality of Serro, Minas Gerais, Brazil. The new species forms a complex with D. ursina and D. sordida, being compared to the latter, to which it appears most closely related.
Elidio A. E. Guarçoni, Marcos A. Sartori, Claudio C. de Paula   +2 more
openaire   +1 more source

Physiological Potential of Dyckia spp. Bromeliad Seeds Under Different Temperatures

Semina:Ciencias Agrarias, 2021
Jean Carlo Baudraz de Paula, Felipe Favoretto Furlan   +1 more
exaly  

Criopreservação de sementes de espécies brasileiras do gênero Dyckia (Bromeliaceae)

Iheringia - Serie Botanica, 2022
Gabriel Danilo Shimizu, Jean Carlo Baudraz de Paula, Walter Aparecido Ribeiro Júnior   +2 more
exaly  

Dyckia BROMELIACEAE

2019
F. Krapp, U. Eggli
openaire   +1 more source

Dyckia Magnifica, a New Species of Bromeliaceae (Pitcairnioideae) From Southern Brazil, and the Re-Establishment of D. Tomentosa, of the D. Selloa Complex

Phytotaxa, 2023
Tamara Pastori, Jorge Ernesto de Araujo Mariath, Henrique Mallmann Büneker   +2 more
exaly