From these last series, they've received a long warm period and will now go into cold storage. Here the two…
I just got a notice that not everything runs as it is supposed to when trying to register for the site. Several people were in the ‘pending’ membership list. The ones that seemed legit and familiar to me I’ve just activated manually and they should be able to log in. There’s a spam filter that blocks many (a few thousand actually) and probably the…Read More
1 CommentThe Peony Society posted in the group Species Peonies International Network (SPIN)
Paeonia tomentosa ssp archibaldii
https://www.instagram.com/p/DF8Ahi0KnV1/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==The Peony Society posted in the group Species Peonies International Network (SPIN)
A short update one temperature treatments for germination of peony seeds. As was noted a constant temperature was better than fluctuating temperatures. The seeds which went into the warm treatment later did show a difference in that the one that were left in my house at some 22-23°C had hardly made any progress and showed as good as no…Read More
khurtekant wrote a new post
5 CommentsThanks Koen, I have also better results when I placed my seeds in constant temprature in my ‘home made’ climate chamber. In the past I did some trials with gibberellin treatments, do you have experience with this treatments?
Yes. But I’ll have to admit that I haven’t done a decent trial comparing seeds treated with GA3 and a control group. When soaking the seeds 24-48 hours prior to the warm treatment in vermiculite, the water has a concentration of 200 ppm (parts per million) GA3. Given the standard weight and concentration of GA3 tablets (10 gr tablets, 10% active ingredient), there is normally 1 gram of pure GA3 in them each time. Thus you need 1 tablet for 5 litres of water. (5 litres = 5 kg = 5,000 grammes and 1 gram GA3 is thus a concentration of 1/5000 or 200/1.000.000 if you convert, thus 200 ppm or mg). I can see you’re a member in the hybridizer’s corner, have a look at the paper: Diversity of Treatments in Overcoming Morphophysiological Dormancy of Paeonia peregrina Mill. Seeds. In it several treatments with differing concentrations of GA3 have been tried and 200 ppm (=mg) seemed to give the best result. Given those results I simply used that concentration and then forgot to make a control to see if it also the best solution for other species/crosses than P. peregrina, but I reckon there won’t be too much of a difference.
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