Date: Wed, 5 Aug 1998 18:56:34 +0100 From: "Steve Gordon" <gordon@rapid.co.uk> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg2605$foo@default> Subject: Re: Photoperiods and the Dark Cycle.
Dear Trevor,
I have been growing CPs under various combinations of discharge lamps (total
replacement lighting) for a number of years now and have found, over time,
with day lengths in excess of 14 hours that some plants exhibit this
photoinhibition that you mention. At least, I think you are referring to a
problem I have! I would describe it as a foreshortening or rosetting affect
which gets worse over time irrespective of light level.
As you obviously know what you are talking about, I was wondering if you can
tell me if you think it is a phytochrome (R/FR ) reaction which, as far as I
am aware, is affected by day length, or more accurately night length?
I have been looking for someone who knows enough about the subject, and is
interested enough in CP's to discuss it, for a while now. Sorry if this
puts you on the spot, so to speak.
Regards,
Steve uk.
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