Powered by OpenAIRE graph
Found an issue? Give us feedback
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 Theoretical and Appl...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
Theoretical and Applied Genetics
Article . 1981 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
versions View all 2 versions
addClaim

Peculiarities in PMC Meiosis of Pisum sativum

Authors: I, Klášterská; C, Ramel;

Peculiarities in PMC Meiosis of Pisum sativum

Abstract

The general outline of meiotic prophase proposed by Wilson in 1925 included three stages which usually are missing in the description of meiosis today: (1) synizesis (= the synaptic stage in plants), (2) the diffuse stage, which follows the pachytene and (3) the second contraction, following the diffuse stage. The last two stages were regarded by Wilson as being very variable and could even be lacking. These stages, described by early plant cytologists later became regarded as fixation artefacts and after the introduction of the squash technique were either misinterpreted and/or forgotten.However, all three stages are easily recognised in aceticethanol fixed preparations of plant meiosis and are demonstrated in Pisum sativum meiosis. Pisum meiosis differs from the usual plant meiosis by: (1) the peculiar timing of the late prophase, (2) the existence of extrachromosomal fibrillar structures appearing at synizesis and staining by Feulgen - Light Green, and (3) the appearance of multiple nucleoli in the late prophase. The possibility that these nucleoli and fibrillar structures are of relevance in relation to gene amplification is discussed.

Related Organizations
  • BIP!
    Impact byBIP!
    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).
    2
    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.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
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!
2
Average
Average
Average
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!