vines 'see' trees?

john owen jpo5 at
Fri Sep 15 06:05:54 EST 2000's phytochrome mediated shoot elongation i think though.
Phytochromes are plant photoreceptors which detect red and far-red light.
The proportion of far-red light a plant receives is increased if the light
has passed through or been reflected from a "canopy" of other plants. This
induces the spindly growth mentioned previously

"Colin Mitchell Beier" <cbeier at> wrote in message
news:8phhsk$9f6$1 at
> is this phenomenon at all related to cytochrome mediated shoot elongation?

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