Re: HYB: REB: counting leaf blades for rebloom
iris@hort.net
  • Subject: Re: HYB: REB: counting leaf blades for rebloom
  • From: L* M* <1*@rewrite.hort.net>
  • Date: Sat, 31 May 2014 07:23:23 -0400
Rats - this isn't as easy as I'd hoped. Most of my seedlings maintain at least two, usually three generations of living rhizome (roots, making new offshoots), and even if they didn't, I can't tell where the new part of the rhizome that produced the current blooming fan starts.
I'm looking at rhizomes of plants I've culled this year while I try to figure out whether this will work.
I pulled a piece of IMM that had a stalk to try to get a reference point, knowing, more or less, how many leaves the mature fan "should" have (based on what you've posted here previously), but that didn't help.
Chuck, when your TB season ends, & you maybe have time to look into this approach for counting leaf blades, I'd appreciate any ideas on how to figure out where the terminal fan's leaf scars start. 

Is it in 'front' of wherever the closest increase is attached?
If a terminal fan was <not> mature enough to get bud set during preceeding bud set conditions, it's often pretty obvious where it stopped, then started growing again, but not in the ones that just matured, then bloomed. The ones that don't mature in time for bud set just make those longer and longer rhizomes, but there's a bit of a constriction where they pause in growth. Some of those dudes must make 30 or 100 leaf blades over a several year period with no bloom and no death of terminal. 

On 5/29/2014 3:47 PM, Chuck Chapman wrote:

Should work.

Chuck Chapman

-----Original Message-----
From: Betty Wilkerson <101n@rewrite.hort.net>
To: iris <iris@hort.net>
Sent: Thu, May 29, 2014 1:38 pm
Subject: Re: [iris] HYB: REB: counting leaf blades for rebloom

I'm not Chuck, but I can see where this would work for you.  Not to predict
future cross but to collect information on things that have rebloomed
for you.







Betty Wilkerson
Zone 6 KY
autmirislvr@aol.com




-----Original Message-----
From: Linda Mann <101l@rewrite.hort.net>
To: iris <iris@hort.net>
Sent: Wed, May 28, 2014 7:57 pm
Subject: [iris] HYB: REB: counting leaf blades for rebloom


Like Betty, I have zero interest in crawling around in the heat and
humidity (or even when weather is more comfortable) to count leaf scars
on rhizomes to figure out how many leaves were on a fan when it was
blooming size.

But it just dawned on me this morning that I can cut off the part of the
rhizome that has a spent bloomstalk, bring it indoors, and photograph,
count scars at leisure.  I could even label them and toss them in a box
to dry & count this winter!

I have my eye on one cross in particular - IMM X pink (Imm x Csong) that
I would really like to increase my odds of guessing which, if any, might
have potential to rebloom (according to Chuck's theory) to try to use
for breeding.

Chuck, when you get time to comment, is there any reason this wouldn't
work?  If the fan produced a bloomstalk, at least I'd know for sure it
was mature.

Linda Mann east TN


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