Data/hora: 15/06/2024 16:24:57

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