Lemna lab problems

Eric Ribbens E-Ribbens at wiu.edu
Tue Nov 7 10:55:38 EST 2000

We're trying a new lab here, population growth using Lemna minor. We've 
been cultivating it in the greenhouse (it turns out for 22 + years!), but 
when we set up the growth experiment the thalli promptly all bleached white 
(within two days). The ones left in the dark are the only ones which didn't 
bleach, although they are looking a bit poorly as well. Any idea why? 
Fluorescent light? Increase in light intensity? Water chemistry change? 
Just general stubbornness?


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