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Avatar for Phenolic
Jul 13, 2015 12:08 AM CST
Ontario, Canada (Zone 6a)
Bulbs Native Plants and Wildflowers Seed Starter
Since lilies from distant crosses have a high tendency to produce 2n gametes, have any experienced hybridizers produced viable tetraploid or triploid seeds from any crosses using diploid or tetraploid OT/LO/LA/etc. parents? It is possible to germinate the resulting seeds naturally and without any laboratory techniques like embryo rescue/culture?
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Jul 13, 2015 9:15 AM CST
Name: Øystein Hermansen
Østfold,Norway (Zone 5b)
I have best germination sowing 4n seeds having them in a cup of water for 2-3 days changing water 2 times a day. It's possible to get seeds when crossing 4n OT x 4n trumpets, 2n OT x 2n trumpets, LO x 4n OT, LO x 4n orientals, LA x (4n?) asiatics. The old OTs have poor fertility but newer hybrids can produce many seeds in every pods. My best advice is to use mixed pollen from 10 different lilies.
Ille bra,se.
Avatar for Phenolic
Jul 14, 2015 2:20 PM CST
Ontario, Canada (Zone 6a)
Bulbs Native Plants and Wildflowers Seed Starter
Thanks for the reply, Øystein! Crossing lilies with a goal in mind is rather different from the pollen dabbing I've been doing, I have found.

I've done some literature reading for lily cytogenetics, and most of the authors cultured their embryos. So, I've been confused about distant crosses like OT's, LA's, and LO's.
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Jul 14, 2015 2:58 PM CST
Name: Joe
Long Island, NY (Zone 7a)
Lilies Region: New York Seed Starter Plant and/or Seed Trader Garden Ideas: Level 1
From what I've read, it's best to put 4N pollen on triploids and it may be possible to get seeds. Sometimes I try to think with goals like for instance I have a beautiful LO called Pink Heaven which is supposedly 4N. So I figured that if I put some of that pollen on Easter Morn (trumpet x Longiflorum) I may get something due to a common grandparent. We'll see what happens in the fall.
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Jul 14, 2015 5:06 PM CST
Moderator
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
Lilium genetics are funny like that. But never say never, you never know when you'll get seed. But a good goal to me, would not only come up with something nice to look at but also strong genetically, long lasting and virus resistant and or tolerant. So putting those traits in the so called "mix" is a good thing.
Avatar for Phenolic
Jul 14, 2015 10:36 PM CST
Ontario, Canada (Zone 6a)
Bulbs Native Plants and Wildflowers Seed Starter
Joe, is that what "bridging" is?

Tracey, lily beetle and virus tolerance are on the top of my list of traits to breed for! I'm building up my pool of knowledge and collecting lilies for genetic diversity in the meanwhile.
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