sex determination in plants

[Janice M. Glime]

Sex determination in plants can also depend on available nutrients, and
may be the case in some plants that appear to be dioecious.  This is the
case with Jack-in-the-pulpit (Arisaema triphyllum).  It is first sterile,
then in 2-3 years it is male, then the following year if enough energy is
available, it becomes female; then the cycle starts over.

The first sex chromosomes were found in the moss Mnium.  I don't know
which species, so I don't know if it was dioecious.  

Janice
***********************************
 Janice M. Glime, Professor  
 Department of Biological Sciences
 Michigan Technological University
 Houghton, MI 49931-1295
 jmglime at mtu.edu
 906-487-2546
 FAX 906-487-3167 
***********************************


---