Cambial divisions

Dr. David Starrett dstarret at BIOLOGY.SEMO.EDU
Wed Oct 30 15:14:15 EST 1996


Plant-eders,
  While teaching plant anatomy, I came across the tidbit that xylem mother
cells divide twice while phloem mother cells divide once.  When I brought
this up to the class, one student asked whether that one division was the
division producing the Companion cell.  I tried looking this up in a few
texts, but found no answer.  Anyone have an idea whether the single PMC
division yields the Sieve Tube Memebr plus companion cell?

  Any thoughts would be appreciated!

Thanx,

  Dave Starrett
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*  Dr. David Starrett                                       *
*  Biology Department, MS 6200                              *
*  Southeast Missouri State University                      *
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*  email: dstarret at biology.semo.edu                         *
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