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<title>Re: terms for roots</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Marty, Mary & others – The more
I also try & gain clarity on the origin(s) of seminal roots – from the
scutellar node or above the scutellar node, the more I need to see some images
of longitudinal sections through the germinating kernel so as to really see
where these seminal roots arise. The external morphology images & drawings just
don’t provide enough granularity for me. The work by Hochholdinger et al.
(<a href="http://aob.oxfordjournals.org/cgi/content/full/93/4/359#SEC3">http://aob.oxfordjournals.org/cgi/content/full/93/4/359#SEC3</a>)
provides some persuasive DESCRIPTION of the embryonic origin of seminal roots
which align with Marty’s comments about the origin being from within the
scutellar node region – although the exsertion/emergence of the seminal
roots from the kernel tissue make the seminal roots seem to appear from above
the scutellum – the origin & emergence sites not being spatially equivalent.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I’d suggest the needed tweaking should
be “------ is a root emerging from the scutellar node”. This
implies that Kiesselbach’s description ((… just above the scutellar
node.” p.17) is a little ‘off’ but I sense that his
description is focusing more on the apparent emergence of the seminal root than
the origin.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>- Leszek<o:p></o:p></span></font></p>
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style='font-size:10.0pt;color:navy'>*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*<br>
P. Leszek D. Vincent Ph.D., FLS<br>
Division of Plant Sciences<br>
215 Curtis Hall<br>
University of Missouri-Columbia<br>
<st1:City w:st="on"><st1:place w:st="on">Columbia</st1:place></st1:City><br>
MO 65211-7020<br>
<st1:country-region w:st="on"><st1:place w:st="on">USA</st1:place></st1:country-region><br>
Ph: (573) 884-3716; Skype VoIP: phytosynergy; Fax:(573) 884-7850;<br>
Email: Leszek@missouri.edu<br>
Associate Curator, Dunn-Palmer Herbarium (UMO);<br>
Research Associate, <st1:PlaceName w:st="on">Missouri</st1:PlaceName> <st1:PlaceType
w:st="on">Botanical Garden</st1:PlaceType> (MO), <st1:country-region w:st="on"><st1:place
w:st="on">USA</st1:place></st1:country-region>;<br>
Plant Systematist on The Plant Ontology Consortium - NSF award 0321666
(www.plantontology.org)<br>
*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> owner-<st1:PersonName
w:st="on">po-dev@plantontology.org</st1:PersonName> [mailto:owner-<st1:PersonName
w:st="on">po-dev@plantontology.org</st1:PersonName>] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Marty Sachs<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, June 19, 2006 1:49
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Schaeffer, Mary L.; POC-dev<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: terms for roots</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mary,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>About the best I could find is in; Kiesselbach TA (1949) The Structure
and Reproduction of Corn. <st1:State w:st="on"><st1:place w:st="on">Nebr</st1:place></st1:State>
Agric Exp Stn Ann Rep 161:1-96<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>http://www.maizegdb.org/cgi-bin/displayrefrecord.cgi?id=59445<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'm attaching Figure 6 (page 14).<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The seminal (secondary) root here is also growing upwards, but clearly
emerging from the scultellar node (embryo axis).<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On page 16-17 in a description of the root system, it says: "The
root system of corn, as of other grasses, consists of two sets of roots: (1)
seminal roots whose initials are present in the embryo, and (2) adventitious
roots, which arise from stem tissue after germination...."<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </x-tab>-Marty<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>At 1:17 PM -0500 6/19/06, Mary (Polacco) Schaeffer wrote:<o:p></o:p></span></font></p>
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<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite cite>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Marty,<br>
That was my concern but since there seems to be some dispute here amongst my
betters:<br>
Do you have a picture or published reference I could go to for this?<br>
m<br>
<br>
<br>
<b><span style='font-weight:bold'>From:</span></b> Marty Sachs
<msachs@uiuc.edu><br>
<b><span style='font-weight:bold'>Date:</span></b> Mon, 19 Jun 2006 13:12:45
-0500<br>
<b><span style='font-weight:bold'>To:</span></b> "Mary (Polacco)
Schaeffer" <SchaefferM@missouri.edu>, POC-dev <<st1:PersonName
w:st="on">po-dev@plantontology.org</st1:PersonName>><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: terms for roots<br>
...<br>
I've looked at a lot of these roots in my day, and it is true that in some
backgrounds, they tend to grow upwards and appear as if they're emerging above
the scutellum. <font color=teal><span style='color:teal'>However, they're
really originating from within the scutellum (or the embryo axis proper).</span></font><o:p></o:p></span></font></p>
</blockquote>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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