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lettuce seed germination

Grant R. Cramer cramer at MED.UNR.EDU
Tue Feb 3 11:04:08 EST 1998

>At 6:46 PM -0500 2/2/98, wise at vaxa.cis.uwosh.edu wrote:
>>Dear Plant Edders,
>>        I am hoping to do the classic lettuce seed germination experiment
>>in plant phys lab next week.  The standard procedure is to use the Grand
>>Rapids variety.  However, all I can get locally and quickly are Romaine and
>>Summertime.  Does anyone know if these latter two varieties will work?
>The best way is to try them...In my hands the lettuce
>germinates in red/white light within two days time.
>Under continuous far-red they fail to germinate above
>4% and in darkness the results vary among seed batches
>in my experience.
>I routinely use 'Salad Bowl' because it is cheap and
>abundant at our local AGWAY.  I can get several ounces
>of the same seed lot.
>I guess my point is that if you simply test one packet
>(note the seed lot printed on the envelope), you can then
>buy the bulk you need of the lot you have available that
>I have had 'Grand Rapids' that was great...I have had
>lots that were miserable (98% germination in the dark!).

I believe most of today's lettuce varieties will germinate in the dark.


Grant R. Cramer
Associate Professor
Department of Biochemistry, Mail Stop 200
University of Nevada,
Reno, NV 89557
Phone (702) 784-4204
Fax (702) 784-1650
email: cramer at med.unr.edu
web page: http://BIOCHEM.MED.UNR.EDU/faculty/grant_c/

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