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Author Topic: Do Plants Sleep ?  (Read 9348 times)

Offline neilep

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Do Plants Sleep ?
« on: 24/10/2009 19:32:40 »

As a sheepy , I of course sleep....well..actually..I sleep in very small doses !

Take a look and Cynthia and Hyacinth !


Cynthia & Hyacinth

Awwwww...ewe can see what they are dreaming of !...awwwwwww sweet dreams  !!..I suspect Cynthia will wake up quite flustered and probably a little moist !!


Though Hyacinth is dreaming of his pink potted babe....I would like to know if Plants actually do sleep ?...or perhaps go through a sleeping phase ?

If there is a period of sleep like stasis at night for instance...would plants still require this rest if there was no night  ?..have plants been studied in greenhouses at the poles ?



Whajafink ?

Ewe see..I don't know...I just do not know and X-factor is going to start soon !!...


Hugs & shmishes


mwah mwah mwah mwah !!



Neil
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Offline RD

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Do Plants Sleep ?
« Reply #1 on: 25/10/2009 07:13:26 »
Some plants are successfully grown under continuous artificial lighting ...


http://www.hampshire.police.uk

where the value of crop is sufficiently high to cover cost of the electricity,

(in cannabis farms the lecky is probably being knicked).

http://www.madsci.org/posts/archives/2003-09/1063237248.Bt.r.html


Some plants do need to experience daily darkness to synchronise with the seasons ...
 http://en.wikipedia.org/wiki/Photoperiodism
« Last Edit: 25/10/2009 07:38:16 by RD »
 

Offline Don_1

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Do Plants Sleep ?
« Reply #2 on: 25/10/2009 09:14:05 »
A lack of darkness periods during the 24hr cycle could be rather confusing for some plants, such as the 'Daylily' (Hemerocallis ).
 

Offline chris

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Do Plants Sleep ?
« Reply #3 on: 25/10/2009 09:44:59 »
On the programme "The Naked Scientists in LA" I met up with Steve Kay who is a plant scientist at UCSD. He works specifically on plant circadian rhythms; here's a link to the interview about plant body clocks.

Chris
 

Offline neilep

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Do Plants Sleep ?
« Reply #4 on: 25/10/2009 11:59:08 »
Some plants are successfully grown under continuous artificial lighting ...


http://www.hampshire.police.uk

where the value of crop is sufficiently high to cover cost of the electricity,

(in cannabis farms the lecky is probably being knicked).

http://www.madsci.org/posts/archives/2003-09/1063237248.Bt.r.html


Some plants do need to experience daily darkness to synchronise with the seasons ...
 http://en.wikipedia.org/wiki/Photoperiodism




Thanks RD.

That's some serious ' erb' exploitation going on there !!

The link to Photoperiodism is very interesting. I wonder how these plants would react in an all light environment ?
 

Offline neilep

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Do Plants Sleep ?
« Reply #5 on: 25/10/2009 12:00:35 »
A lack of darkness periods during the 24hr cycle could be rather confusing for some plants, such as the 'Daylily' (Hemerocallis ).

   ;D

 

Offline neilep

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Do Plants Sleep ?
« Reply #6 on: 25/10/2009 12:06:55 »
On the programme "The Naked Scientists in LA" I met up with Steve Kay who is a plant scientist at UCSD. He works specifically on plant circadian rhythms; here's a link to the interview about plant body clocks.

Chris

Fascinating !...Very interesting that the plants grow at night....and quite incredible about the use of the leaves to tell daily time !

Worrying the about the impending (potential) food crisis in 2050 !!

Thanks Chris.
 

Offline that mad man

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Do Plants Sleep ?
« Reply #7 on: 25/10/2009 23:09:59 »
A lack of darkness periods during the 24hr cycle could be rather confusing for some plants, such as the 'Daylily' (Hemerocallis ).


I think its the same with most annual flowering plants although some do auto flower after a time and are not dependent on the photo-period (daylight vs darkness). Most outdoor plants sense the photo-period from the seasons and its this difference in the ratio of the day/night period that triggers the plant into flowering.

"and quite incredible about the use of the leaves to tell daily time !"

The plant fairies tell the plant that the nights are getting longer and winter is coming so they better start flowering and spread their seed. Cough.. ;D

Plants can be grown all year round indoors by giving them the correct photo-period for that plant and providing them with the necessary light intensity/spectrum and nutrients. Its the same with Cannabis, its not grown on a continuous light cycle and needs a dark period of around 8-12 hours to trigger it into flowering.

That photo looks like its a potential fire hazard as well.
 

Offline Jessica H

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Do Plants Sleep ?
« Reply #8 on: 05/11/2009 03:11:39 »
Another interesting application of the "biological clock" is that dessert plants open their stomata (pores under the leaves) just at night to take in and store carbon dioxide.  Then during the day they can use the stored carbon dioxide to do photosynthesis and make food.  The advantage is that they can photosynthesize without opening their pores and loosing a lot of excess water when it's sunny and hot outside.  This is called CAMS photosynthesis.
 

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Do Plants Sleep ?
« Reply #8 on: 05/11/2009 03:11:39 »

 

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