Maple sap

David L. Haas dhaas at CHI1.UNCFSU.EDU
Tue Mar 11 15:51:58 EST 1997

Dear Plant edders,

I have a question concerning collecting sap from maples for the making of 
maple syurp.  Why doesn't the phloem plug up due to callose and p-protein 
when a tree is tapped to collect sap?  This normally happens in other 
plants doesn't it?  Am I missing something here?  Can anyone help answer 


Dave Haas

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