Welcome to OrchidsForum.com. We are a friendly online community for Orchid Growers all over the world. If you haven't joined yet we invite you to register and join our community. Hope to see you on our forums!

Dendrobium cyanocentrum 4N and 2N

Discussion in 'Orchid Species' started by Marni, Sep 20, 2019.

  1. Marni

    Marni Well-Known Member Staff Member Supporting Member

    Messages:
    13,463
    Likes Received:
    3,259
    Location:
    Santa Rosa, CA
    A friend had wanted to see a comparison of a 4N (tetraploid) form of this species compared to a 2N (diploid) form. The 4N was a cross between the white and blue forms that was chemically treated to convert it to a 4N. The other is a blue x blue cross done many years ago.

    Den.cyanocentrum.4N.blue.x.white.jpg
    Den.cyanocentrum.l.4n.bl x w.right. blue.jpg
     
  2. Mikhail kujawa

    Mikhail kujawa Well-Known Member

    Messages:
    1,484
    Likes Received:
    1,168
    Location:
    Golden, CO
    Beautiful Marni and well grown!
     
  3. pacome

    pacome Active Member

    Messages:
    296
    Likes Received:
    101
    Location:
    Belgium
    Do you have a "white x blue" plant, non treated, for comparision?
    Here all my "white x blue" plants, that haven't been treated, are much more vigorous/big than my (late) blue form plant was
     
  4. Marni

    Marni Well-Known Member Staff Member Supporting Member

    Messages:
    13,463
    Likes Received:
    3,259
    Location:
    Santa Rosa, CA
    I don't think so. I lost most, if not all, of them last year. I do remember the extra vigor, but not this much. This clearly stood out from the normal blue x white outcross when I had them. The substance of the flowers is different from any of the other Den cyanocentrum I have had.
     
  5. DPfarr

    DPfarr Well-Known Member

    Messages:
    1,508
    Likes Received:
    520
    Location:
    Sacramento, CA
    Have you noticed the same with tetraploid subuliferum?
     
  6. Marni

    Marni Well-Known Member Staff Member Supporting Member

    Messages:
    13,463
    Likes Received:
    3,259
    Location:
    Santa Rosa, CA
    I don't have any treated subuliferum. I treated a cross in 2012 or 13, but don't have any of that cross surviving. I haven't treated any since then. Next time I will try.