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Re: HYB: seed germination

  • Subject: Re: HYB: seed germination
  • From: christian foster <flatnflashy@yahoo.com>
  • Date: Mon, 16 Feb 2009 19:26:31 -0800 (PST)


I continue to have a steady number of active pods though nothing like
that one week.  My husband announced that he had fixed the refrigerator a
couple days after I potted up the last one.  I guess he thought the fridge was
a little warm that week.  

Yes, I am still seeing the pattern you describe, a
few germinants to start the pod followed by a gap of about four calendar weeks
with no activity in that pod, followed by a bit of a spurt.   No pods have
"finished" either.

Still 5 pods that have not yet Germinated 1 (G1) out of
126.   If memory serves those pods are also just now showing the coffee
colored stain on the paper towel, which may be significant.  

Come first of
March I'm going to have to cull soft seeds and see what I have left.  I may go
ahead and allow all seeds to come to room temp for a week or so, haven't
decided.  I'm in school now, so I may not want to actually germinate all my
seeds.  Plus, it might be fun to carry out the experiment.  I'll also have to
start lining out at that time.  Some of my older sprouts are holding on by a
thread, so I'll have to risk the frost.

From: Linda Mann <lmann@lock-net.com>
Sent: Monday, February 16, 2009 10:52:02 AM
Subject: [iris] HYB:
seed germination

Christian, how are your seeds that you are leaving in the
fridge forever doing?

I was surprised to find ~50 more germinants this week
in the one cross that I've left in the fridge, just to see what happened.  ~50
had germinated off and on, half a dozen every few days for about a month, then
a pause for several weeks, then all of a sudden, a huge flush of another 50

I think that's sort of the pattern of germination you have seen too?
The cross is HARVEST OF MEMORIES X ABBONDANZA, 3 pods, 225 seeds. Unshelled
pods went into baggies in the fridge in mid July, as pods were just barely
starting to split.  Seeds shelled & counted & rinsed & wrapped in damp paper
towels rolled into burritos in Sept, first germinants... I'll have to dig out
my notes, but I think the first ones were in November (4 months chilling),
this most recent big flush of germinants in mid-Feb were chilled for 7

Which makes me think (as maybe you have already suggested?) that the
second year germinants I see here where winters don't always last very long
(certainly not 7 months) may not need two cycles of chilling, just more total
time chilling.

That's still only about 50% germination, but that's sometimes
about all that comes from some of the IMM & HoM crosses.

-- Linda Mann east
Tennessee USA zone 7/8
East Tennessee Iris Society
Region 7, Kentucky-Tennessee
American Iris Society web site
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