Jul 27, 2016 11:37 PM CST
Name: Dave
Southern wisconsin (Zone 5b)
Japanese Maples Plant and/or Seed Trader Seed Starter Pollen collector Peonies Lilies
Irises Hybridizer Hummingbirder Dog Lover Daylilies Clematis
How can you tell if a specimen is tetra or triploid?
Jul 27, 2016 11:58 PM CST
Name: Joshua
Melbourne, Victoria, Australia (Zone 10b)
Köppen Climate Zone Cfb
Plant Database Moderator Forum moderator Region: Australia Cat Lover Bookworm Hybridizer
Orchids Lilies Irises Seed Starter Container Gardener Garden Photography
In short, not easily if you don't have the equipment to count chromosomes, I think. Tetraploids are supposed to be bigger plants (noticeably the stomata), but as for triploid, nobody's mentioned any discernable differences between a diploid and triploid, so I'm not sure there is any way to tell short of counting the chromosomes.

I asked the same question a few months back and there was a bit of a discussion on it here, just in case you hadn't seen it: The thread "Ploidy" in Lilies forum
Plant Authorities: Catalogue of Life (Species) --- International Cultivar Registration Authorities (Cultivars) --- RHS Orchid Register --- RHS Lilium Register
My Notes: Orchid Genera HTML PDF Excel --- Lilium Traits HTML PDF --- Lilium Species Crosses HTML PDF Excel --- Lilium Species Diagram
The current profile image is that of Iris 'Volcanic Glow'.
Last edited by Australis Jul 28, 2016 4:35 PM Icon for preview
Jul 28, 2016 7:11 AM CST
Name: Tracey
Midwest (Zone 5a)
Garden Photography Tomato Heads Hosted a Not-A-Raffle-Raffle Pollen collector Forum moderator Hybridizer
Plant Database Moderator Cat Lover I was one of the first 300 contributors to the plant database! Charter ATP Member Garden Ideas: Master Level Seed Starter
Some information of that type can be found in the lily register or RHS.
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