In our germination studies, we use 1% agar as a medium in petridishes and close them with parafilm. As the agar contains enough moisture and nutrients, it turns out to be a great medium for germination studies.

Hi Aglaia,

In my laboratory we apply the conditions stated by the ISTA Rules (ISTA=International Seed Testing Association) and they are as follows:

Coriandrum sativum

TP=Top Paper;  or BP=Between Paper; (I usually place the seeds between paper for the first few days and then uncover the seeds so that they don't get contaminated with fungi).

2030ªC (alternating Temperature); or 20ºC (constant temperature)

1st count  7 days

Final count 21 days.

Yet in my experience I leave the test up to 45 days as seeds continue to germinate way beyond the suggested 21 days. 

If after 45 days I still have fresh seeds in the test , I perform a viability test with Tetrazolium (1%) on those fresh seeds  in order to be able to assess whether they are viable or not. 

Hope this may prove of help.

Best regards.

Ana

Cold moist stratification at night.  You moisten the seeds, then put in the refrigerator each night and that usually helps break any seed dormancies.  

This a useful Paper about the matter.

We usually sock the coriander fruit overnight in dark condition before sowing on soil medium. It germinates nicely. I hope you can apply this methodology by using sterilized distilled water and then transfer to the sterilized petri dish that contain sterilized filter pepper.