[pbs] pbs Digest, Vol 57, Issue 16
Max Withers
maxwithers at gmail.com
Mon Oct 15 13:28:38 EDT 2007
Diane's explanation for Arnold's Arums is inspired. The trigger here
must simply be the passage of time (i.e., boredom). Without pretending
to understand biochemistry, it is plausible to image a growth inhibitor
that could be overcome by, say, day-length or precipitation events, but
will eventually wear off even without external stimuli.
Best,
Max
> No light, no temperature differences? Obviously boredom was the
> trigger.
>
> Diane Whitehead
> From: Arnold Trachtenberg <arnold at nj.rr.com>
> Subject: [pbs] What promotes blooming or growth ?
>
> I have to add an additional thought to the thread of flower initiation.
> I have five or six pots of various Arum species on the floor of my
> basement. I would say that the temperature varies little during the
> year and there is no light. I turn off the HID lights that I use
> during the winter for some South African species. Well, I had a look
> this evening and many of the Arum are pushing up a spike of growth. So
> what was the trigger in this case.
>
> Arnold
> New Jersey
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