Check out this thread, Nhut. Maybe it will help: http://www.rv-orchidworks.com/orchid...they-mean.html
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This is a discussion on Polyploid orchids - is this a 3n orchid ? within the New Growers: Ask the Senior Members forums, part of the New Growers category; anyone know about Polyploid ? I crossed my Rhynchovanda colmarie Merlot, but the pods turn ...
anyone know about Polyploid ? I crossed my Rhynchovanda colmarie Merlot, but the pods turn brown and fall down? My orchid is tetraploid ? How i can recognize 3n orchids ? Help me please....
In addition to the VERY interesting thread of 2009 this is some additional information.
If the cross from which Rhynchovanda colmarie Merlot was selected was between a 2n x 4n this plant will be a triploid. These are most of the times sterile. Although nature is quite flexible, and we are lucky that orchids make such huge amounts of gametes, sometimes these gametes are unreduced which mean that they are ready to mate with with another unreduced gamete. This is just a matter of luck and a well developed embryo rescue system, otherwise these low fertile seed pods will turn brown and take the few fertile embryos down with it. So try to set seedpods on many plants and find somebody that can sow your pods which need to be sowed very early.
Good luck with it,
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