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Author Topic: F2 Seedling Naming  (Read 6282 times)
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graykiwi
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« on: August 09, 2011, 11:56:42 »

Here's something that's been bugging me for a while that I can't seem to find something written on, so I'd be interested in your thoughts to see if we have any differences of opinion...

Time for some algebra !...  Wink

The question is...."How would you write the CORRECT parentage formula (name) for seedlings grown from from "F2 self set" grexes that came from "unnamed" hybrid plants, under the following scenarios ?"...

Scenario 1.  F2 seedling from seed from a plant - 'A x B'

Scenario 2.  F2 seedling from seed from a plant - '(A x B) x C'

Scenario 3.  F2 seedling from seed from a plant - '(A x B) x (C x D)'

To my way of thinking, you must write them like this;

1. '(A x B) F2'

2. '[(A x B) x C] F2'

3. '[(A x B) x (C x D)] F2'

Have I got it right, or completely wrong ?...Why I ask is I've seen seedlings just labelled as; 'A x B F2'...which is misleading, as you then don't know if the pollen parent "B" was an F2 plant... or the seedling is actually an F2 of A x B !!   Huh

Obviously when you add multiples into the mix (like in 2 and 3 above), it gets more complicated, but also more important that the brackets are used CORRECTLY to signify the correct grex name.

Thoughts anyone ?

Cheers, Graeme
 
« Last Edit: August 09, 2011, 11:58:41 by graykiwi » Logged
Rickta66
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« Reply #1 on: August 09, 2011, 13:07:25 »

Graeme,

You have correctly explained the way I understand self set seeds should be written, I have a few plants in my garden that are labelled A x B F2, I always took it to be A cross (B F2) but I can see where the confusion could come from.

BTW the word Filia (F) means daughter in Latin.

Rick
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pinkbroms
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« Reply #2 on: August 09, 2011, 13:28:09 »

Hello Graeme

I'm with your way of thinking.

PB
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Lisa
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« Reply #3 on: August 09, 2011, 20:20:41 »

I agree with both your and Rick's conclusions, Graeme.  That is assuming the person who wrote the tag did it correctly, which is not always the case.  One person I know (who should definitely know better) still writes formulas as A x B x C with no parentheses or brackets.  This drives me absolutely nuts, particularly when I want to use one of those hybrids as a parent. 
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graykiwi
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« Reply #4 on: August 09, 2011, 20:48:30 »

Thanks guys, just wanted to be sure..nice to know I'm not alone in my frustrations too!
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paul_t23
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« Reply #5 on: August 09, 2011, 23:15:18 »

Hi Graeme,

That sure looks good to me too.  Just love Lisa's AxBxC , that would drive me crackers as well  Shocked Shocked

Cheers, Paul
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Lisa
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« Reply #6 on: August 10, 2011, 01:18:37 »

I also get a little crazy when somebody refers to an ABC combination as a "three-way cross".  There's no such thing as a three-way cross!  There can only be two parents.  Either A and B are grandparents, or B and C are.   
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