Evolution of geophytes?

Tom Elias tselias@msn.com
Thu, 07 Feb 2019 11:16:55 PST
   You may also want to investigate the presence of toxic secondary compounds such as alkaloids in geophytes.  I know for example that Irises are abundant in the extensive steppes of Siberia.  This is a major location for the evolution of large herbivores.   Tulips are also found here along with other bulbous plants.  I know that Irises are loaded with alkaloids and poisonous to gracing animals.  But, I do not know about the toxicity of Tulips and other bulbous plants found there. This is one of several mechanisms that plants have developed to successfully compete and survive.


From: pbs <pbs-bounces@lists.pacificbulbsociety.net> on behalf of mark akimoff <makimoff76@gmail.com>
Sent: Thursday, February 7, 2019 9:28 AM
To: Pacific Bulb Society
Subject: [pbs] Evolution of geophytes?


I'm wanting to put together an introductory power point on the evolution of
geophytes to be used in STEM (Science Technology Engineering and Math)
outreach at local schools. I'm interested in the story telling aspect of
it, and Martyn Rix' "Growing Bulbs" has a great introductory chapter on the
evolution of flowers that covers things like the Crocus, and subterranean
ovaries as an adaptation to grazing pressure. Or for instance, fall
blooming speciation as an adaptation to  seasonal migration of grazing
herds across elevational gradients.

Beyond that book does anyone have any other books, articles, ideas,
theories, etc? That might be useful in introducing evolution of geophytes
as a curriculum? I'm leaning towards tying it in to current issues like
zeric adaptations for changing climate or pollution tolerance, that sort of

Any help from this brain trust would be much appreciated!

Mark Akimoff
Salem, Oregon
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