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Photoperiodism

photoperiodism

(Science: biology) Events triggered by duration of illumination or pattern of light/dark cycles: often the wavelength of the illuminating light is important as for example in control of circadian rhythm in plants.

See: phytochromes. The response by organisms in response to the availability of light in their environment. Photoperiodism plays a part in some organisms [[biological clock but is primarily related to the way light affects plants flowering and the state of phytochrome.


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Re:

Just take some room, where you're sure nobody's going too often and which has no windows (or you can seal them), put in light with timing. The photoperiodism requires at least 12 hours long periods anyway... Hello, thank you for the reply So if I was doing photoperiodism would my research question ...

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by Lysis
Mon Feb 13, 2012 10:48 am
 
Forum: Botany Discussion
Topic: Investigation into aspect of plant physiology
Replies: 6
Views: 2879

Investigation into aspect of plant physiology

... of light strength on plants cannot be used? Too bad, there could be several topics... Anyway, how is it that you cannot regulate humidity and photoperiodism? For humidity you can water your plants with exact volume of water and maybe even close them somewhere. As for photoperiodism, do you ...

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by JackBean
Mon Feb 13, 2012 7:11 am
 
Forum: Botany Discussion
Topic: Investigation into aspect of plant physiology
Replies: 6
Views: 2879

Investigation into aspect of plant physiology

... yeah it needs to be testable Things I have investigated myself: Humidity - Hard to regulate and then there also isn't much secondary data on that Photoperiodism - Hard to regulate and I'm only at school for 5 hours so I can only really regulate it for 5 hours unless I take the plants home with ...

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by Lysis
Mon Feb 13, 2012 5:58 am
 
Forum: Botany Discussion
Topic: Investigation into aspect of plant physiology
Replies: 6
Views: 2879

Photosysnthesis

what do you mean by frequency? The wavelength? Or intensity? The plants are sensing photoperiodism, so 24-hrs light wouldn't be probably good for them (at least not long-term)

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by JackBean
Thu Feb 02, 2012 11:33 am
 
Forum: General Discussion
Topic: Photosysnthesis
Replies: 10
Views: 6091

Re:

... The regime 3 has full long night, while regime 4 has flash of light inside the night, thus the plant doesn't flower. http://en.wikipedia.org/wiki/Photoperiodism#Short-day_plants I am confused as in regime 3, the long night is followed by a period of daylight. I thought during daylight, P730 accumulates,which ...

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by ADAS137
Thu Dec 15, 2011 1:52 pm
 
Forum: Botany Discussion
Topic: Problem understanding result of lighting regime-phytochrome
Replies: 13
Views: 5839
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