ferric source

Subject: Re: BRYONET: ferric tartrate
Date: Wed, 23 Jun 2004 09:03:58 +0100
From: Jennifer Rowntree <j.rowntree@rbgkew.org.uk>
To: bryonet-l@mtu.edu

BRYONET

Dear Bernard

I have had a quick look through the ingredients of the media I use
to grow a variety of bryophytes and none of them contain ferric
tartrate. Two (Murashige & Skoog and Parkers) have ferrous sulfate
in various quantities and one (Knops minimal media) has no Fe
compounds at all, although a modified version again contains
FeSO4:7H20. I think (although someone plese correct me if I am
wrong) that it is the amount and possibly oxidation state of the Fe
ions that are important, rather than the form they are delivered in.

Jenny

================================

Dr. Jennifer Rowntree
Bryophyte Conservation Officer
Micropropagation Unit
Royal Botanic Gardens, Kew
Richmond
Surrey
TW9 3AB

Tel: 02083325559
Fax: 02083325524