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HYB MTB Persona's children

  • Subject: HYB MTB Persona's children
  • From: thomas silvers <tesilvers@yahoo.com>
  • Date: Wed, 8 Oct 2008 04:18:03 -0700 (PDT)

Hello Loïc,
Fascinating work! (And pretty flowers too!)
I still would think that Astrachanica Kalmikij and Bangles are diploids. Several months ago I had a discussion with Harald Mathes about mixed ploidy crosses, and he mentioned that he had much more success using the tetraploid as seed parent and diploid as pollen parent. Until that conversation, I'd been trying all of my mixed ploidy crosses the other way around (based on what I'd read about iris history in "The World of Irises") -- and I haven't had much luck at all. I didn't get a chance to more fully explore the possibilities, since the season was coming to an end. But next season, I'll certainly be trying at least a few of these kinds of crosses. By accident, I did get a seed from Lowell Baumunk's INTROSPECTION (tetraploid TB) from pollen of Iris purpureobractea -- I was test-crossing for ploidy of Iris purpureobractea and have decided that it must be diploid (from the multitude of seeds I got using it with other diploids). Now that I have another
strategy for combining tetraploid and diploid lines, I sure hope that INTROSPECTION x purpureobractea seed grows.

If I remember Haralds descriptions correctly... he said that he usually got lots of seeds from diploid as seed parent (tetraploid pollen), but all of them were small, shriveled and inviable... when the tetraploid was used as seed parent (diploid pollen) he got only a few seeds, but those few seeds were much better quality.

I'll bet you can't guess what diploid pollen I'm going to be trying next season ;0)

Good luck and keep up the good work!

Loïc wrote:

(Colette Thurillet X Persona) bloomed this spring and gave 2 pods, with Impulsive Imp and Miss Nellie
(Earl of Essex X Persona) bloomed this summer and gave 3 pods, with DD05-20bRE = S(mell the Rose x What Again), Lake Reprise and Claire Doodle.

They seem to mix well with tetraploides.
They don't look diploide at all. Neither the flower nor the plant.


(Keith Keppel, R. 2004) Sdlg. 99-3A. MTB, 18" (46 cm), M
S. mauve-toned taupe (M&P 5-H-7 aging 5-D-8); style arms same, flushed lavender; F. white ground sharply veined mulberry (45-K-10), lower part flushed heather (42-H-8), narrow edge matching S.; beards light chrome yellow (10-L-4) at end, spanish yellow (10-L-7) in throat. SIGNA seed, Astrachanica Kalmikij (open pollinated) X Bangles. Keppel 2005

i assumed Astrachanica Kalmikij and Bangles were diploids, but, according to my experience, they don't seem to be.

What do you think?

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