[Fwd: [ geneontology-Curator requests-929957 ] vivipary]

[Dave Matthews]

Subject: RE: [Fwd: [ geneontology-Curator requests-929957 ] vivipary]
Date: Fri, 1 Jul 2005 10:52:49 +0100
From: "steve reader \(JIC\)" <steve.reader at bbsrc.ac.uk>
To: <grains-request at greengenes.cit.cornell.edu>

Hello from the UK.
	Not sure if the reasoning is getting a little ahead of itself,
as hinted at in the last comment below - pre-harvest sprouting is the
effect of unusual environment speeding up a natural process, i.e.
germination, and as such is variable from season to season in many
countries. In my view, it's wrong to consider the seasonal shifts in the
genotype x environment interaction as a form of vivipary.
	Like many of the correspondents to the website, I understood
'Vivipary' to have an asexual slant, i.e. to mean the creation of a
young plant in (emanating from) an inflorescence, viz. as in some
grassses and especially the common house plant known as the 'spider
plant'. Similarly, the asexual production of a new plant when a bud is
detached from the parent, as in the onion. These are a means of natural
propagation which happens each season and is under genetic control.
However, their occurrence is independent of normal environmental
influence, yet such seasonal variation may influence survival of the new
plantlets, once produced.
Cheers,
Steve Reader.

Stephen M. Reader, Germplasm Manager,
Wheat Precise Genetic Stocks,
John Innes Centre,
Norwich Research Park,
Colney, Norwich,		Tel:	+44 1603 450613 / 450594
NR4 7UH,			Fax:	+44 1603 450023
UK.			e-mail:	steve.reader at bbsrc.ac.uk

-----Original Message-----
From: grains-request at greengenes.cit.cornell.edu
[mailto:grains-request at greengenes.cit.cornell.edu] On Behalf Of Tom
Blake
Sent: 28 June 2005 18:27
To: 'Mary Polacco'; 'po-dev at plantontology.org, Pankaj Jaiswal';
'POC-dev'
Cc: 'Jennifer I Clark'; rice-e-net at chanko.lab.nig.ac.jp;
grains at greengenes.cit.cornell.edu
Subject: RE: [Fwd: [ geneontology-Curator requests-929957 ] vivipary]


Hi folks,
   In the small grains, this is called preharvest sprouting.  It's
well-understood, and as Mary suggests is the result of lack of seed
dormancy and a wet harvest environment.  Calling it vivipary won't
improve understanding of the process.  In both barley and wheat the
genetics of dormancy and of preharvest sprouting is pretty
well-understood. 
Cheers,
Tom Blake, barley breeder, Montana State University

-----Original Message-----
From: grains-request at greengenes.cit.cornell.edu
[mailto:grains-request at greengenes.cit.cornell.edu] On Behalf Of Mary
Polacco
Sent: Tuesday, June 28, 2005 11:04 AM
To: po-dev at plantontology.org, Pankaj Jaiswal; POC-dev
Cc: Jennifer I Clark; rice-e-net at chanko.lab.nig.ac.jp;
grains at greengenes.cit.cornell.edu
Subject: Re: [Fwd: [ geneontology-Curator requests-929957 ] vivipary]

Is there going to be consideration of the related process, dormancy?

> From: Pankaj Jaiswal <pj37 at cornell.edu>
> Reply-To: po-dev at plantontology.org, Pankaj Jaiswal <pj37 at cornell.edu>
> Date: Tue, 28 Jun 2005 09:57:44 -0400
> To: POC-dev <po-dev at plantontology.org>
> Cc: Jennifer I Clark <jenclark at ebi.ac.uk>,
rice-e-net at chanko.lab.nig.ac.jp,
> grains at greengenes.cit.cornell.edu
> Subject: [Fwd: [ geneontology-Curator requests-929957 ] vivipary]
>
> Hi Everyone,
>
> I though that some people from the plant community may be interested
> in the discussion on adding a new term VIVIPARY (and its instances ??)

> in the Gene Ontology.
>
> Please follow the link below on the discussion
>
https://sourceforge.net/tracker/?func=detail&atid=440764&aid=929957&group_id=36855
>
> A couple of questions are:
>
> #1 whether we need the two instances of a generic term VIVIPARY
>
> vegetative vivipary (sensu Magnoliophyta)
> non-vegetative vivipary (sensu Magnoliophyta)
>
>
> #2 Is there anything called as vegetative vivipary.
>
>
> BY definition, in cereal plants or elsewhere, vivipary is defined as
>
> "A process promoting the germination of embryos while still attached
> to the mother plant. "
>
> -Pankaj