Re: AIS: Sage article issues
- To: "Space Age Robin" <S*@yahoogroups.com>
- Subject: [SpaceAgeRobin] Re: AIS: Sage article issues
- From: &* A* M* <n*@charter.net>
- Date: Sun, 5 Sep 2004 09:39:44 -0400
Chris, I really appreciate your comments.
I have in mind a very different approach to the
subject than used by Austin in his article. Carole Taber loaned me her
copy of an in-depth text that explores the molecular level of the biology and
growth mechanisms of plants. The part that most concerns SAGE would be
that dealing with differentiation of the meristematic (growing tip) tissues into
flower stem, attached stem leaf remnants, branching and flower
formation.
Some photos in the Robin, especially those from
Michael Michalis, have shown some significant things about flounces that I find
especially revealing about which parts of the iris flower from which the
Space Age appendages arise. I think this is really important
matter about which to get a good handle, as the genetics controlling flower
formation are where the Space Age characteristics are to be found.
All of this is controlled by sequences of different
sections of what is in chromosomes firing up or shutting down.
What controls ordinary growth of rhizome and leaf production gets switched
off, with those parts of the genome determining flowering development come out
of their sleep and going to work.
Everything we call "genetic" is a result of enzymes
and hormones, which themselves are proteins and enzymes.
Enzymes, catalysts of the processes, and various kinds of protein hormones are what "genes" are made of. A familiar example of a hormone at work is when we
use Rootone(R), a commercial product with about a 3 ppm solution, used according
to directions, application of NAA (naphthaline acetic acid), a hormone that has
to do with cell sizing and/or rate of division, I have forgotten which for the
moment. A series or related hormones--IAA (indole acetic acid),
gibberellins and so one are all used selectively in fruit and flower industries
to effect specific characteristics in commercial products. An example of
this are those lovely, large grape clusters bought at the local
supermarket. Those are sized up and bunch enhanced through a spray of a
very dilute solution of a gibberellin during development.
An understanding of genetics at the molecular level
is the only way to get a handle on what, why and how things like double flowers
and SA characteristics can and do occur.
I'm hoping to include some of this sort of thing in
the article along with a summary of the SAGE project and the rationale behind
the choices made of cross-types.
How much of this flies over the hair-do of the
majority of AIS readers is really important. We don't want to leave the
majority of the folks out there bewildered by what is said.
Neil Mogensen z 7 western NC
mountains
Yahoo! Groups Links
|
- Prev by Date: Re: AIS: Sage article issues
- Next by Date: BSE photo
- Previous by thread: Re: AIS: Sage article issues
- Next by thread: BSE photo