Flow of sap in Spring

Nancy Harrison vulpia at sonic.net
Wed Sep 16 17:43:23 EST 1998

How does sap get up from the roots to the buds of a tree in the Spring?
Is it via phloem or xylem? What is the source of the "pressure"? 
I have searched in plant physio books and found nothing.
Could this "flow" be apoplastic? Maple syrup enthusiasts want
to know! - NH
---Nancy Harrison, SRJC Life Sciences, Santa Rosa CA 95401
   http://www.sonic.net/~vulpia/index.html (with link to CNPS in Sonoma 

More information about the Plant-ed mailing list