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old Utricularia seeds

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Nov 4, 2012
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Utricularia longifolia “multi-flowered scape” Araponga, Minas Gerais state, Brazil

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When Fernando-san was studying abroad at the University of Tokyo, he kindly gave me a lot of Brazilian cp seeds. The seeds are 20+ years old now. I sowed one of them on February 19, 2021. I confirmed the germination of a couple of seeds on April 20th. The photo was taken on April 25th. The final germination rate may not be very good. But I can see some other seeds that the insides of them have turned green color, I expect them to germinate. I will post this progress here. Maybe I will sow other Utricularia species seeds he gave me as well. I will post about them here if they germinate. The seeds were stored in the refrigerator, so this may not be a rare case, though it is very interesting to me.

Kind regards from the Far East

P.S. I soaked the seeds in 1000ppm GA3 (gibberellic acid) solution for 24hrs.
 

bluemax

Lotsa blue
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I have wondered about old seeds in the refrigerator and whether they can still be sprouted. I can see that the current germination rate is probably not as high as one would get with fresh seeds but it is impressive knowing that they are 20 years old!
 
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Update: Utricularia longifolia “multi-flowered scape” Araponga, Minas Gerais state, Brazil

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The photos were taken on May 25th.
There are seeds that are likely to germinate from now on, but they will not be able to be separated, so I would transplant them.
In the first place I didn't count how many seeds I had sown, so it's not appropriate to mention germination rates. But to put it bluntly, I'm satisfied.
There are still a lot of seeds because I just sown a part of the packet. Then I would like to pick up seeds that look decent appearance and examine the germination rate.
 

collin

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Thanks for sharing this, I have some U. praetermissa seeds coming; I will try soaking half of them in gibberellic acid to see if it impacts germination rates. I don't really expect the seeds to sprout (as I don't know how well they've been kept or how old they are) - we'll see. :)
 
Joined
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Thanks for sharing this, I have some U. praetermissa seeds coming; I will try soaking half of them in gibberellic acid to see if it impacts germination rates. I don't really expect the seeds to sprout (as I don't know how well they've been kept or how old they are) - we'll see. :)
Interesting!
I'm keeping my fingers crossed for you.
 
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