re: HYB: pod vs pollen traits (very long) (was ??)
- Subject: re: HYB: pod vs pollen traits (very long) (was ??)
- From: "Linda Mann" <firstname.lastname@example.org>
- Date: Sun, 30 Nov 2008 08:20:18 -0500
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(test to see if messages are getting to the archives yet & if this
gmail subscription is working)
This started as another subject line, but I didn't see the post so
don't know what it was....
Thanks Colleen - it didn't make it to the archives, which is where I
and a lot of others read. The last message I was able to get out via
lock-net didn't show up either. And I don't see anything in the
archives in reply to your post.
I sent a note to Chris Lindsey and John J the other day - no response so far...
Only thing I'd comment on is that overall plant vigor seems to be a
crap shoot as far as <both> parents are concerned. So many factors
affecting plant growth, disease resistance, carbon allocation in
general, I guess that's no surprise.
IMM as pod parent has given a lot of seedlings with excellent
health/vigor, but those are the survivors! Some crosses barely any
seeds germinate, others have high germination and few survivors. Some
pollen donors to the IMM crosses have been so poor in my growing
conditions, I can barely keep them alive long enough to give pollen,
but have produced strong seedlings and vice versa.
The only clue I've found to guessing whether or not a weak but fertile
performer here will give strong seedlings is by looking at the
pedigree to see if there is anything in there that has clung to life
here for more than one year out in the "garden" and, for older ones,
seeing what's been
registered from it. If I see that a cultivar (or parents) have been
used a lot in different climates, then I figure <maybe> it will give
strong seedlings here.
As for branching - not as much experience there - IMM does give fairly
good branching to children as pod parent, no experience with her as
pollen parent. I have grown a lot of seedlings from PINK FORMAL both
ways - I'll have to pay closer attention this bloom season, but my
impression is that she passes along her poor branching and tall skinny
stalks when used as pod parent more often than when used as pollen.
But I'm not sure.
Stalk height seems to come from either side - short seems to be full
recessive. But I can't be sure about stalk height here because
everything is consistently shorter than registered, & some cultivars
are erratic in height depending on weather.
I'd be interested in hearing if anybody has gotten noticeably taller
seedlings from two short parents - i.e., distinctly tall from two
border bearded in good growing conditions. I've gotten some seedlings
that have been taller than both parents, but only because they've had
better root systems & were stronger plants than the parents. I think. ;-)
As for color - too few reverse crosses and too few seedlings to have
noticed anything. I have seen (tho not huge numbers, so maybe not
statistically significant) differences in color depending on how many
winters/how long a period chilling seeds require to germinate (i.e.,
pinks seem to need the least). And I <think> I've seen some tendency
for pod parent and <maybe> even weather during bloom/pod development
to affect seed chilling requirements.
Too few surviving seedlings from most crosses here to really say much
of anything for sure.
I wish people would use CULT in the subject line for iris culture and
not for other things!
> I posted a general email in iris talk yesterday, but have had very
> little response, did you not get it? here it is.
> This year I had a lot of new crosses flower and I've also been better
> able to assess the last few years crosses. And I'm finding some notable
> differences between pod and pollen use.
> For eg I've done reciprocal crosses on Brides Blush and Silver City
> several time. When Silver City is the pod parent the seedling show a lot
> more lavender and lace, but also don't show the strong branching that
> seedlings show when Bride's Blush is the pod parent.
> Firebeard seedlings show it's tall thin stems more when used as a pod
> parent but not when used as a pollen parent.
> Regarding form, I've used both Sneezy and Momentous Occasion as form
> wideners and this seems to work both as pod or pollen, similarly they
> both seem shorten the seedling stem height but probably more so when
> used as pod parents. Great for breeding border beardeds.
> Basically it would seem that stem/branching and colour (maybe mostly
> relating to dominant whites) are more pod related than pollen related,
> however rebloom seems unrelated to whether I use pod or pollen. Foliage
> colour and plant vigor seems unrelated also.
> I'd appreciate everyones else's comments also.
> Colleen Modra
> Adelaide Hills
> South Australia
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.DiscoverET.org/etis>
Region 7, Kentucky-Tennessee <http://www.aisregion7.org>
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