Re: Re: HYB: rebloom breeding
iris@hort.net
  • Subject: Re: Re: HYB: rebloom breeding
  • From: C* C* <d*@rewrite.hort.net>
  • Date: Mon, 1 Dec 2014 19:52:01 -0500
Spring bloom, then 2 months for plants to mature, bud set and then five months of growth. So beginning of May bloom, so maturity of increases beginning of July . If get bud set temperature right away, then five months later would be January, with good growing weather and no frost.
In California flowering in March. Maturity of increases in May Five months later is November.
If you want to know what type of rebloom genes, then need to know when bud set. Best way for this is to keep temperature records and observe maturity of fans . 

Chuck Chapman

-----Original Message-----
From: Linda Mann <101l@rewrite.hort.net>
To: iris <iris@hort.net>
Sent: Mon, Dec 1, 2014 5:12 pm
Subject: Re: [iris] Re:  HYB: rebloom breeding

If that's the case (I'm assuming that's a hypothesis, not a data driven
conclusion), then what I said before is too conservative, & 'summer'
recessive rebloom would be anything that reblooms less than 5 months
after spring bloom.

On 12/1/2014 10:56 AM, Chuck Chapman wrote:
Preferential vernalization rebloom will be about 5 month, give or 
take

a week, perhaps two.
Peak reliable TB bloom here is usually around last week of April , first week of May. 5 months from then would be end of Sept/early October. (if 
I did that right).
So anything blooming earlier than that (by the 5 month rule) couldn't be 
preferential rebloom.  Right?
If that's not right, then I'm missing something in what you've been saying. 

That timing (end of Sept/early October) coincides with a bunch of
rebloomers here that are normally reblooming earlier than what I think
of as the 'real' fall cycle rebloomers.

There are two crosses in particular that I can't make sense of - IMM X
Matrix.  Imm is recessive summer, but apparently Matrix isn't - Imm X
Matrix gave one out of a decent number of strong seedlings that reblooms 
& it's a reliable cycle rebloomer, starting late Oct/Nov.

Matrix often reblooms starting in September, but not in summer, and I
don't remember anybody reporting summer bloom on it (which, of course,
does'nt mean it doesn't have the genes for it).

But Matrix crossed with Tea Leaves has given at least one reliable
summer (starting as early as August) rebloomer (it's an old cross, only
have that one seedling, haven't tried to dig out notes to see how many
seeds etc).

Tea Leaves can start blooming in August in a good year.

Matrix pollen on one of the Imm X Csong kids gave at least one seedling
that can start blooming in August (pretty sure few seeds from that pod).

And Tea Leaves pollen on a different Imm X Csong kid gave all August
rebloomers.

So either Tea Leaves is a preferential rebloomer that takes less than 5
months to start blooming <or> it's a summer (recessive) rebloomer.

Either way, the phenotype early fall rebloom which it seems to pass to
children.

Imm X (Final Episode x (Tea Leaves x Matrix) has three seedlings old
enough to rebloom this year - two rebloomed - one rebloomed in July,
Sept, Oct; the other in Oct.

The pollen parent has not rebloomed; one sib out of many rhizomes tried
to bloom in Nov this year (first time any have tried to rebloom). So my 
best guess from all this is that
Imm is summer/recessive
the pollen seedling is probably half summer/recessive
Tea Leaves X Matrix is probably summer/recessive
Matrix is probably half summer/recessive

I can hardly wait till next year - will really make an effort to
irrigate & fertilize or find somebody to hire to do it.

Linda Mann




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