hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: [aroid-l] Question--Colocasia "Black magic"

  • Subject: Re: [aroid-l] Question--Colocasia "Black magic"
  • From: "Bryant, Harry E." <HEBryant@scj.com>
  • Date: Wed, 7 Apr 2004 12:41:16 -0500

Dear Aroid-geeks,

It's probably a question of semantics but I wonder if much of this thread is
based on confusion between mutation, or, changed genotype, and varrying
phenotypic expression of the same genotype in response to the environmental
conditions that are present during tissue culture.  My guess is that it is
phenotype rather than mutation.  I suspect mutations will be caused by much
more rigerous conditions such as strong UV light, or agressive mutagenic
chemicals.  My guess is the only way to find out for sure is to do DNA
analysis and see if the same genes are present but are expressed differently
quantitatively.   And, I doubt anybody in this crowd has the resources to do
this kind of study.

A quick google pointed to the following link on genotype vs. phenotype.  You
may find it of value.

Harry Bryant 
(Susan's worst half)

-----Original Message-----
From: aroid-l-owner@lists.ncsu.edu
[mailto:aroid-l-owner@lists.ncsu.edu]On Behalf Of MossyTrail@cs.com
Sent: Wednesday, April 07, 2004 2:08 AM
To: aroid-l@lists.ncsu.edu
Subject: Re: [aroid-l] Question--Colocasia "Black magic"

Tony Avent <tony@plantdelights.com> wrote:

>    Regarding your Colocasia 'Black Magic' question, I can share a bit of
>background.  This clone clumps in most climates, but when grown as an
>aquatic, it does produce runners.  In very wet season, we have seen the
>occasional runner.  In tissue culture, C. 'Black Magic' mutated to a form
>that runs in all climates.  It was given the name C. 'Black Runner'.  This
>form also has leaves that emerge darker and have more ruffling around the
>edges.  I hope this helps.
Yes, it does.  As I recall, it is the variety C. e. aquatilis that runs.
Your explanation suggests that these varieties may be, at least in part,
ecotypes -- when grown it a wet stuation, it "becomes" aquatilis.  Have
there been any genetic/phylogeny studies on the three varieties of C.
esculenta, to determine whether their differences are genotypic (suggesting
true subspecies) or merely phenotypic (suggesting ecotypes)?

Jason Hernandez

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement