Re: [OGD] Roots

[Dorothy Potter Barnett]

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 On Dec 14, 2005, at 6:00 AM, [EMAIL PROTECTED] wrote: 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.

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