| Abstract Detail
Physiology Busse, James S. [1], Palta, Jiwan P. [1]. Histology of ‘Dark Red Norland’ skin during periderm development. THE potato tuber epidermis is ephemeral and is replaced by a secondary protective tissue, the periderm. We used microscopic techniques to study periderm ontogeny from the stolon through A-sized potatoes. Examination of the epidermis of a 1 cm diameter tuber using scanning electron microscopy revealed a smooth appearance comprised of cells abutting each other in a contiguous manner. No breaks or fissures were noticed as evidence of cell separation. Furthermore, cells were turgid and not collapsed. The periderm of the mature potato had a fissured appearance. The fissures were relatively deep and cell separation was quite extensive. However, cell outlines were clearly visible suggesting separation preceded as schizogenous and/or lysigenous process. On the mature tuber, many cells appear only loosely attached to the rest of the periderm. Apparently, some cells slough from the outer surface. Our observations show that during periderm development, cellular spatial relationships change in response to increasing tuber size.
Log in to add this item to your schedule
1 - University of Wisconsin, Department of Horticulture, 1575 Linden Drive, Madison, WI, 53706, USA
Keywords:
periderm
development.
Session: Poster-21
Location: Ballroom CD/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 8:00 AM
Abstract ID:369 |
