>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
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/