Re: Can plants change sex? (non CP)

From: Tim Metcalf (hmmetcalf@ucdavis.edu)
Date: Fri Mar 31 2000 - 12:49:10 PST

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Date: Fri, 31 Mar 2000 12:49:10 -0800
From: Tim Metcalf <hmmetcalf@ucdavis.edu>
To: cp@opus.hpl.hp.com
Message-Id: <aabcdefg960$foo@default>
Subject: Re: Can plants change sex? (non CP)

Jack in the Pulpit, Arisaema triphylla, native to the east coast of
the US and Canada routinely changes sex. It produces leaves and
flowers in the spring and summer and pumps all its reserves into a
corm and goes dormant and leafless during the winter. If the previous
year had been good and it has lots of reserves in the corm, it
emerges female. If the same plant had a bad year and the corm is too
small to support seed and fruit formation, the plant emerges the next
spring as a male.
Tim

Tim Metcalf
Plant Biology
One Shields Avenue
Davis, CA 95616-8537
(530) 752-0569
FAX 5410
http://greenhouse.ucdavis.edu

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