The ultrastructure of polymorphic pollen grains of Canna indica L. View Full Text


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Article Info

DATE

1989-08

AUTHORS

F. Chen, F. Ciampolini, A. Tiezzi, M. Cresti

ABSTRACT

Our investigations on Canna indica L. indicate that the pollen of this species is polymorphic: there are two types of pollen — a larger type and a comparatively smaller type. Transmission electron microscopy (TEM) revealed the presence of small vacuoles containing tannic substances in the generative cell (GC) of the larger grains: the GC of the mature grain contained a higher quantity of tannins than the GC of the immature grain. Mitochondria, lipid bodies, rough endoplasmic reticulum (RER) and microtubular bundles were present in the cytoplasm of the GC. Numerous mitochondria, lipid bodies and plastids were also present in the vegetative cell (VC), with the mitochondria clustered around the vegetative nucleus. The plastids were observed to be associated with the RER cisterns. During the maturation process, the number of starch grains contained in the plastids decreased. More... »

PAGES

193-198

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00192766

DOI

http://dx.doi.org/10.1007/bf00192766

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1008536669


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