Data/hora: 10/06/2024 07:03:35

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	14/03/2024	
Data da última atualização: 	18/03/2024	
Autoria: 	MOTA, S. dos S.; FARO, I. A. M. de; SOARES, T. L.; ALMEIDA, P. S. de; SOUZA, F. V. D.; AONA, L. Y. S.; COSTA, M. A. P. de C.; ROSSI, M. L.; SOUZA, E. H. de.	
Afiliação: 	SIMPLÍCIO DOS SANTOS MOTA, UNIVERSIDADE FEDERAL RECÔNCAVO DA BAHIA; ILA ADRIANE MACIEL DE FARO, UNIVERSIDADE FEDERAL RECÔNCAVO DA BAHIA; TALIANE LEILA SOARES; PEDRO SCHWAMBACH DE ALMEIDA, UNIVERSIDADE FEDERAL DE RIO DE JANEIRO; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF; LIDYANNE YURIKO SALEME AONA, UNIVERSIDADE FEDERAL RECÔNCAVO DA BAHIA; MARIA ANGÉLICA PEREIRA DE CARVALHO COSTA, UNIVERSIDADE FEDERAL RECÔNCAVO DA BAHIA; MÔNICA LANZONI ROSSI, UNIVERSIDADE DE SÃO PAULO; EVERTON HILO DE SOUZA, UNIVERSIDADE FEDERAL RECÔNCAVO DA BAHIA.	
Título: 	Pollen morphology and viability of Lymania (Bromeliaceae) species with ornamental potential.	
Ano de publicação: 	2024	
Fonte/Imprenta: 	Scientia Horticulturae, v. 328, 112890, 2024.	
Páginas: 	10 p.	
DOI: 	https://doi.org/10.1016/j.scienta.2024.112890	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The genus Lymania belongs to the Bromeliaceae family and currently has ten endemic species in Northeast Brazil, restricted to the Atlantic Forest domain, the vast majority threatened with extinction and with ornamental potential. Studies of pollen morphology and viability provide important information for taxonomic, reproductive, and species conservation. The aim of this study was to evaluate the morphology and viability of pollen grains of nine threatened Lymania species endemic to the Northeast region of Brazil and with ornamental potential. Pollen morphological characters were observed using Scanning Electron Microscopy (SEM) and Light Microscopy (LM). For the histochemical tests, two dyes were used: Alexander's solution and fluorescein diacetate, at three stages of floral development (pre-anthesis, anthesis, and post-anthesis). The pollen grains collected in these stages were germinated in vitro in two culture media (BM and SM). We observed that all species have monad pollen grains except for L. languida, with medium-sized grains arranged in tetrads, with oblate to suboblate shape, bilateral symmetry, triporate or biporate, semitectate or eutectate exine and reticulate-heterobrochate, psilate or perforate ornamentation. Most Lymania species showed higher germination percentage, pollen tube growth and viability when pollen was collected at anthesis. The SM culture medium and the pollen grain sampling at the floral anthesis stage were the most suitable for the Lymania species. Our investigation of the structure of pollen grains and pollen viability of these species provides important data for taxonomy, as well as for controlled crosses, obtaining seeds, or conservation trials, especially regarding threatened species.	
Palavras-Chave: 	Floral and reproductive biology; Histochemical test; In vitro Germination.	
Thesagro: 	Bromélia; Taxonomia.	
Thesaurus Nal: 	Fluorescence microscopy; Taxonomy.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
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