Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Anther wall and pollen development in Ophrys mammosa L. (Orchidaceae)

Mehmet Aybekeb
Plant Systematics and Evolution
Vol. 298, No. 6 (June 2012), pp. 1015-1023
Published by: Springer
Stable URL: http://www.jstor.org/stable/43558581
Page Count: 9
  • More info
  • Cite this Item
Anther wall and pollen development in Ophrys mammosa L. (Orchidaceae)
Preview not available

Abstract

The objective of this study was to investigate anther wall and pollen development in Ophrys mammosa. Primary sporogen tissue resembles longitudinal cells with divided archeosporal cells. Thereafter these primary sporogen tissue cells re-divide anticlinally and periclinally forming secondary sporogen tissue. Microsporogenesis was successive type. Microgametogenesis occurred at the distal poles of the microspores. In addition, dense starch accumulation was detected in the pollen. Pollinia and massulae are separated from each other by dead cells filled with callose, according to histochemical preparations. The anther wall was a four-layered "monocotyledon" type. There was ring-like wall thickening in the endothecium.The tapetum is of the glandular type. When these two developmental processes are compared, it is seen that the anther wall has become mature by the sporogen tissue phase and is composed of only epidermis and endothecium at the beginning of microgametogenesis.

Page Thumbnails

  • Thumbnail: Page 
[1015]
    [1015]
  • Thumbnail: Page 
1016
    1016
  • Thumbnail: Page 
1017
    1017
  • Thumbnail: Page 
1018
    1018
  • Thumbnail: Page 
1019
    1019
  • Thumbnail: Page 
1020
    1020
  • Thumbnail: Page 
1021
    1021
  • Thumbnail: Page 
1022
    1022
  • Thumbnail: Page 
1023
    1023