Home Forum topic Propagation, Germination Testing, & Horticulture Does your institution have germination data of seeds stored after 1, 5 or 10 years?

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    Joyce MaschinskiCPC Conservation Officer

    CPC is interested in learning about general longevity of rare species after several years in storage.  If enough data exists, then we will be able to do a meta-analysis.



    Meg EngelhardtCPC Conservation Officer

    We’re working on developing a regular viability testing program at MoBot and hope to have this kind if data in future years. Ask us again in 10 years!

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    Tom KayeCPC Conservation Officer

    We have some results for two species that were stored in paper bags or envelopes at room temperature. We had seeds collected each year for ten years from the same population.  Erigeron decumbens and Abronia umbellata ssp. breviflora had very little loss in viability after ten years.  Happy to share the underlying data. –Tom

    Cheryl BirkerCPC Conservation Officer

    RSABG has a lot of follow-up germination data for our rare seed collections. Our germination data is actually available on our website http://www.rsabg.org on the Seed Conservation page as an excel doc download. We would be very interested in seeing an analysis that includes our data! Let me know if there is anything I can do to help with this!

    Sabine WintergerstCPC Conservation Officer

    We just received seeds of Jaquemontia reclinata from NLGRP that have been stored for 12 years. So far only 2 out of 144 seeds germinated but we hope there will be more.

    Anita TillerCPC Conservation Officer

    yes, we submitted info a few years back to CPC about germination tests for Chloris texensis, Hymenoxys texana and Rayjacksonia aurea. The frequency of our germination testing will be increasing with the addition of staff. On this year’s poster, I reported that germination trials conducted in 2018 by doctoral candidate Eric LoPresti at UC Davis produced the Abronia macrocarpa plants shown in the poster. The seeds tested germinated at 76%. The accession used for LoPresti‚Äôs research had been prepared and frozen for long-term storage at Mercer Botanic Gardens in 1974.

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