Data/hora: 09/06/2024 13:56:30

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Relationship between pollen morphology and chromosome numbers in Brazilian species of Lippia L. (Verbenaceae)	
Autores: 	Sousa,Saulo M.; Pierre,Patrícia M.O.; Torres,Giovana A.; Davide,Lisete C.; Viccini,Lyderson F.	
Data: 	2013-03-01	
Ano: 	2013	
Palavras-chave: 	Chromosome numbers; Lippia; Palynology; Palynomorphology; Pollen; Verbenaceae.	
Resumo: 	The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen grains and a single species exhibited, only tetracolporate pollen. The amb ranged from triangular to square, and the shape varied from oblate-spheroidal to prolate-spheroidal. Three different types of exine ornamentation were observed: psilate, scabrate and perforate. In addition to morphological data, we found positive association between the chromosome numbers and size of pollen grains, and also between the length and width of the colpi. The results indicate that the characteristics of pollen grains in Lippia may be used as an additional taxonomic character of the genus.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100147	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/S0001-37652013005000010	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.85 n.1 2013	
Fonte: 	info:eu-repo/semantics/openAccess