North American Fruit Explorers mailing list at ibiblio

[david.maxwell@dal.ca]

It is actually not specific to paw-paws.  Plants in shade need to make more 
chlorophyll in 
order to make more food for growth.  The increased chlorophyll is dark green. 
 Plants flooded 
with light need - and make - less chlorophyll to satisfy their needs -> paler 
leaves.  (You are 
reasoning in anthropomorphic terms - humans get darker in the sun.  But 
humans don't 
photosynthesize).

> Does anyone have any ideas on why the leaves of a tree would become
> paler in the sun than they are in the shade?
> 
> 
> Jay
>