Re: HYB: CULT: oops - germination experiment results
- Subject: [iris] Re: HYB: CULT: oops - germination experiment results
- From: Linda Mann l*@volfirst.net
- Date: Mon, 06 Jan 2003 15:55:46 -0500
- List-archive: <http://www.hort.net/lists/iris/> (Web Archive)
Well, drat...I knew that was wrong when I posted it - never trust me with
simple arithmetic....plus, I messed up on the summary of types of crosses.
See corrections below.
Linda Mann wrote:
> Results of this fall's experiments:
>
> Refrigerated for 2 months (fresh seeds soaked in toilet tank for 2
> weeks, seed coats nicked):
> 20 pods with an average of 5 seeds each, total 100 seeds:
> 6 crosses germinated at least 1 seed (total 34 seeds in these 6
> crosses)
> total of 8 seeds germinated =
> 8% of total seeds planted, ~24% [NOT 30%] of seeds from crosses that
> had any
> germination
>
> Refrigerated for 3 months (otherwise same as above):
> 41 pods (including the 20 above) with an average of ~7 seeds each,
> total 296 seeds
> 25 crosses germinated at least 1 seed (total 207 seeds in these 25
> crosses)
> total of 60 seeds germinated =
> ~20% of total seeds planted, ~30% [NOT 70%] of seeds from crosses that
> had any
> germination
[My conclusions were off, but 30% germination is still well above my
'normal' outdoor germination rate]
In my summary of types of crosses, I forgot to leave out the 9 crosses that
haven't been planted yet.
> Of the 41 crosses,
> 1 had two rebloomer parents [3 of 5 seeds germinated]
> 3 had one rebloomer parent, one rebloomer grandparent or parent known
> to carry rebloom [1 cross germinated 1 of 16 seeds; 35 seeds total]
> 14 had one rebloomer parent [5 of 11 crosses germinated 9 of 59 seeds;
> 101 seeds total]
> 12 had one rebloomer grandparent [8 of 12 crosses germinated 18 of 107
> seeds, 151 seeds total]
> 12 did not involve rebloomers, known or suspected rebloom carriers [10
> of 12 crosses germinated 30 of 101 seeds; 129 seeds total]
The non rebloomer crosses involved many parents. 5 rebloomer cultivars were
used. 3 cultivars with a rebloomer parent (my IMMORTALITY seedlings) or
known to carry rebloom (PEACH SPOT) were used.
I was surprised that so many of the once blooming crosses germinated
compared to the rebloomers, but that may just be random since so few
rebloomers were involved.
Apologies for the previous mistakes.
--
Linda Mann east Tennessee USA zone 7/8
American Iris Society web site <http://www.irises.org>
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