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[Plant-education] red light sensitive lettuce germination experiments

Helen J Michaels via plant-ed%40net.bio.net (by hmichae from bgsu.edu)
Tue Mar 25 10:32:08 EST 2014


Hello all,

I've been running the classic germination experiments in my Botany class lab in which we expose lettuce seed to different light quality treatments (red vs blue vs green filters). In the past few years we have had really variable results in this experiment, but no problem with light vs dark comparisons. We've ordered special seed, exposed seed to far-red first, and tried elevating the temperature on a heat mat with no improvement. I am suspecting there is some change in the seed that breeders have generated. Anyone have any insights into how to get this to work? We usually check them after a week, but I am wondering if the response needs to be scored sooner and the "anomalous" results are due to the extended time frame. I've checked the archives and found a 1998 posting, but nothing more recent.
 Thanks for any advice!

Helen Michaels


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