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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Plant Systematics an...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Plant Systematics and Evolution
Article . 1973 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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Entwicklungsgeschichtliche Untersuchungen am Androeceum der Alismatales

Authors: Peter Leins; Peter Stadler;

Entwicklungsgeschichtliche Untersuchungen am Androeceum der Alismatales

Abstract

1. Die Androeceen vonEchinodorus macrophyllus, E. intermedius, Alisma plantago-aquatica undSagittaria lancifolia stimmen in ihrer fruhen Entwicklung weitgehend uberein: Es werden zunachst sechs Stamina ausgegliedert, wobei sich jeweils eine Anlage beiderseits der Petalen befindet. 2. Die Anzahl weiterer Anlagen uber den Sepalen und Petalen (Echinodorus) hangt von der Grose der Blutenknospe ab. 3. Die drei „Stamenpaare“ beiAlisma plantago-aquatica entstehen nicht durch „Dedoublement“ dreier episepaler Anlagen. Die sechs Primordien entsprechen den ersten sechs Stamenanlagen vonEchinodorus undSagittaria und entstehen getrennt voneinander. 4. BeiHydrocleis nymphoides bilden sich die zahlreichen Stamina und Staminodien in zentrifugaler Folge auf einem durch perikline Zellteilungen unter der zweiten Schicht entstandenen Ringwulst. Die Einzelglieder sind anfangs in sechszahligen, alternierenden Kreisen angeordnet. Der Ringwulst ist hier wahrscheinlich als sekundare Verbreiterung des Rezeptakulums anzusehen, und die zentrifugalen Stamina sind als sekundar eingeschoben zu betrachten. 5. Weder im Androeceum noch im Gynoeceum konnte bei den hier untersuchten Arten eine Spiralstellung der Organe beobachtet werden.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
20
Average
Top 10%
Average
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