pjordan at gsb013.cs.ualberta.ca (Peter Jordan) wrote:
>>Maybe an ideal plant should be black with white stripes: drat! that
>>opens the door to a 'zebra' plant thread >:-)
>>>I don't know about zebra plants (4 oclocks ?)
> but ..
> wouldn't black leaves make for a very high rate of transpiration.
>>If water is a limiting factor, maybe having only the most efficient pigments
>(reds and blues) helps avoid needing too much water ?
Yes, but that is only true if the energy is _not_ used photosynthetically
(somehow) and is absorbed by the latent heat of evaporation. Think about
chlorophy fluorescence - if the energy is not passed to an electron transport
chain, it has to be released as light or heat.
Dr. A.J.Travis, | JANET: <ajt at uk.ac.sari.rri>
Rowett Research Institute, | other: <ajt at rri.sari.ac.uk>
Greenburn Road, Bucksburn, | phone: +44 (0)224 712751
Aberdeen, AB2 9SB. UK. | fax: +44 (0)224 716687