Association of Official Seed Analysts (AOSA)
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Association of Official Seed Analysts
Tetrazolium Uniformity Working Group
TZ Image Survey

Dear AOSA Members,

First of all, thank you to all of those that have already participated in the first two TZ image surveys.  We greatly appreciate it.  Sorry to be sending out so many in such a short time.  For some of you, it is already the busy season and for others, it will be shortly.  We wanted to try and get as many of these out to you as we can before we all run out of time.  Most of these surveys consist of 3-5 families with less than 20 images per survey.

We encourage everyone to participate.  If you cannot access the Google form, please let Heidi Larson know ( and she can get it to you as a word document.  Also, if you want to participate and do not have access to the TZ handbook, let Heidi know and she will get you the appropriate resources.
Alismataceae, Amaranthaceae, and Amaryllidaceae images:

Apiaceae, Apocynaceae, Araliaceae, and Asparagaceae images:

Berberidaceae, Bignoniaceae, Boraginaceae, and Brassicaceae images:

Caryophyllaceae, Chenopodiaceae, Cleomaceae,  Comandraceae , and Commelinaceae images:

Convolvulaceae, Cucurbitaceae, Cupressaceae, and Cyperaceae images:

Ericaceae, Euphorbiaceae, and Iridaceae images:

Thank you,
The Tetrazolium Uniformity Working Group


Association of Official Seed Analysts (AOSA)
8918 W. 21st St N.
Suite 200, #246
Wichita, KS 67205
(202) 870-2412

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