Structure of the stigma and style in sunflower (Helianthus annuus L. )
Biocell
; 34(3): 133-138, Dec. 2010. ilus
Article
em En
| LILACS
| ID: lil-595014
Biblioteca responsável:
AR40.1
ABSTRACT
This is the first report of the ultrastructure of the stigma and style during and after anthesis in Helianthus annuus L. using light and transmission electron microscopy. The stigma is bifid with unicellular papillae. There is no secretion of lipids, carbohydrates or proteins at anthesis. The style is semisolid in the upper portion, closer to the stigma, and becomes solid below. Ultrastructural changes on cells of the stigma and the style are described. The transmitting tissue of the ovule is first evident 40 minutes after pollination and persists during the first stages of embryogenesis. Only one pollen tube per micropyle was observed growing through this tissue.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Sementes
/
Flores
/
Microscopia Eletrônica de Transmissão
/
Helianthus
Idioma:
En
Revista:
Biocell
Assunto da revista:
Clulas
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Argentina