|
I had heard that it was exuded as an attractant to pollinating
insects...
Ray Barkalow - First Rays Orchids - www.firstrays.comPlants, Supplies,
Artwork, Books and Lots of Free Info!
----- Original Message -----
Sent: Wednesday, December 14, 2005 8:47
AM
Subject: Re: [OGD] Roots
Thanks, Oliver. That is very interesting.
Would you please also address the reason for the sugar found externally
on orchid leaves, stems, flowers...? I've heard it is excess fertilizer, but
would like to know more.
Dot
As usual, it all depends... But one really important point about
roots is that they are the source of cytokines - a class of hormone - for the
plant. Most
plants exist naturally on the edge of a state of senescence, and this
is prevented by the free flow of cytokines. Sick roots or starved roots
do not produce as much of these necessary compounds as will a healthy one,
and such a plant will either become senescent - yellow, dropping leaves and so
forth - or become static and
quasi-dormant.
_______________________________________________
the OrchidGuide
Digest
(OGD)
[email protected]
http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
|
_______________________________________________
the OrchidGuide Digest (OGD)
[email protected]
http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
