Hope you will get many tetraploids next year.
One of the possible problems with chromosome doubling is that not all three meristematic layers may be doubled.
http://www.springerlink.com/content/v57055q8535x7527/
http://www.rosebreeders.org/forum/read.php?2,40438,40438#msg-40438
Kim its sort of like that Alister Stella Grey seedling which I treated with trifluralin, its gone dwarf on me LOL.
Henry I am aware there may be a possibilty that not all layers have been doubled, again I can send it to Melbourne for testing.
A “dwarf” Mutabilis could be a good thing!
The more I look at this mutabilis seedling the more it has grown on me irrespective of its true ploidy.
Those flowers as pictured have a glowing character to them, they are very eye catching actually.
looks even better in real life George
It was a seedling you applied trifluralin to… it might be genetically small and have nothing to do with the trifluralin. I have seedlings (OP) from ‘Indica Major’ that have stayed under 30cm tall over that last three years without chemical intervention.
I can already see a marriage between this mutabilis baby and some gorgeous hulthemia !
:O)
Two great minds running down the same gutter!
It would make a snazzy match up Kim and George.
LOL… DO IT !!
:O)
This Mutabilis X Mutabilis treated with Trifluralin has never stoped flowering since spring, here it is in our Ozzie 2nd month of summer. It has experienced very high temperatures and still it does not seem to mind. Height is stable at 2ft.
[attachment 1392 mutabilisjanb.jpg]
[attachment 1393 mutabilisjan.jpg]
Warren,
What a happy, cheerful, pick-me-up rose. LOVE IT!!!
Jim P
Thanks Jim, shes a real little darllin.
Too bad the name, “Pick Me Up” has been used.
I transplanted the Hulthemia persica seedlings without to much trouble. A friend of mine thought I may have had a bit of difficulty in the post transplanting shock due to the extraordinary long tap root they develop, but everything looks honky dory. They were transplanted into 2" tubes and 0.013% Trifluralin applied to the growth tips, all are placed in a high humidity chamber for 24hrs. I am hoping it might make it easier to hybridize.
Here is the Mutabilis X Mutabilis (treated with Trifluralin) still flowering non stop in March, this little rose never seems to stop blooming or lacking blooms.
[attachment 1470 mutabilismarch.jpg]
That’s a lovely one.
Warren, that is one very fine looking specimen! You have me curious to attempt the Trifluralin treatment for myself.
Terry
I only apply it to diploids which are to be used in breeding programmes containing tetraploids. I am not 100% sure that these have doubled as they are yet to be tested for ploidy level.