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Sowing is an odd thing

This is a discussion on Sowing is an odd thing within the Breeding & Hybridization forums, part of the Orchid Propagation category; ...

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  1. #11
    theLab is offline Junior Member
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    I would like to reply you right in time but my posts are always checked before published so itīs all a little bit delayed. I could be a spammer

  2. #12
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    Thanks for sharing with us I love to see under microscopic view of this tiny orchids seed very strange but so interesting.

  3. #13
    theLab is offline Junior Member
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    Many orchid-seeds are very different in shape according to their destiny. The Pseudovanilla seed for instance (one of the last pictures) is really able to fly/sail hundred of miles. Vanillae and Pseudovanillae are tree-climbers but it would mean the death of when too many plants are acting in a kind of concurrence. So the seeds have to spread and not to focus on one square meter only. The sailing is only possible when the seed is perfectly shaped.
    Thereīs one Aerangis-species occurring in Kenya and in Sri Lanka – consider 6.000 miles distance between both habitats. Itīs still not worked out how this Aerangis could colonize both areas appearing nowhere else. One claims it is because of the Passat-winds of the Indian Ocean which have carried the seeds to Sri Lanka once. But there are no winds at the Eastcoast of Africa blowing that direction rather the opposite. So maybe this very species has already populated Sri Lanka when this island has still been a part … of Africa.
    The outer-layer of the seeds protect the embryos which consist of 30-40 cells only. The embryos are the essential part, very sensitive never the less they have to stand chemical treatment to prepare them for the in-vitro-germination. This layer prevents the embryos will dry out too soon.
    Epidendrum-seeds are funny as well as they are shaped like a screw, they donīt fly they are screwing down to earth. During their fall the turn around so that the heavier part of the seedcorn will touch the ground at first and should - in the best case - not lay on the floor but keep upright with the heavier part hooked and fixed in the ground. Most Epidendra donīt require a mykorrhiza for germination, getting infected would rather bother them in the process of germination.
    Orchidseeds of species occurring in areas with dry, cold until arctic periods or seasons often carry a very thick layer one calls Carapace. Dismantling this layer takes time, exactly the time for the seedcorn in order to resist a dry-period. The germination couldnīt happen if itīs too dry or winter ahead so the layer cares for the germination takes place to the right time and not too early.

    Ok, I have to go, the Botanical Garden in Munich is waiting. Thanks for your interest, attention and maybe I return here again,
    regards
    Matthias
    --- vendor information removed - see faqs on posting ---

  4. #14
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    TwoStems is offline Senior Member
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    biology is so awesome! thanks for sharing

  5. #15
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    Amazing photos of the seeds and the germinating protocorms !! Are you located somewhere in Germany or Austria??

  6. #16
    Halloamey's Avatar
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    Hehe, I think thats just because you are a new member I think, once you have some minimum no. of posts, it will be rather immediately.
    Quote Originally Posted by theLab View Post
    I would like to reply you right in time but my posts are always checked before published so itīs all a little bit delayed. I could be a spammer

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