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coat structure in white bean seeds

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coat structure in white bean seeds

Postby leosilv » Tue Sep 04, 2012 4:38 pm

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 µ large - laying onto the coat plane and assembled in branched bundles (jpeg attached). They stain blue in 0.2% toluidine bue. Some information on such strutures will be greatly acknowledged. Thanks You all
012BF.jpg
012BF.jpg (16.29 KiB) Viewed 2626 times
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Postby JackBean » Tue Sep 04, 2012 8:58 pm

That seems like xylem to me. But you saw it on(?) the seeds?
http://www.biolib.cz/en/main/

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Re: coat structure in white bean seeds

Postby leosilv » Wed Sep 05, 2012 2:38 am

Unexpectedly , I saw such branched bundles planarly embedded in the thin leaflet just below the external seed surface. Why there? May be they have a role during imbibition. Thanks
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