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Testa

testa

(Science: plant biology) Outer covering of a seed, also called the seed coat, derived from the integument of the ovary.


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coat structure in white bean seeds

Hi, while observing detached white bean testa in optical microscopy, I saw some long helical structures - seemingly included in thiny walled pipes (not sure of this) and roughly 20 ยต large - laying onto the coat plane and assembled in branched ...

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by leosilv
Tue Sep 04, 2012 4:38 pm
 
Forum: Botany Discussion
Topic: coat structure in white bean seeds
Replies: 2
Views: 2866

why is the peach stone sculptured form?

Hmmm, that's sort of interesting question. Walnuts (which are stones in fact) also have carved testa.

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by SU_reptile
Tue Oct 03, 2006 9:02 am
 
Forum: Botany Discussion
Topic: why is the peach stone sculptured form?
Replies: 3
Views: 1932

your answers

... when they reached appropriate size they were examined for visible parts. On the exterior the radicle, hilum, and micropyle were visible. When the testa was removed, and the cotyledons separated, the seed revealed the hypocotyl and two folded plumule leaves which were easily separated with a probe. ...

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by DARKHEDGE
Sat Mar 25, 2006 1:10 pm
 
Forum: Botany Discussion
Topic: Marrowfat Peas
Replies: 51
Views: 41517


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