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Post by templeton on Oct 26, 2012 20:18:55 GMT -5
I want to do some back crosses on the first flowers of the season -I'm impatient, and want to get the fruits for a second gen growout this season. The first of the flowers on the pollen donor are open, but the other parent are only just in bud. Any advice on how I might collect and preserve the pollen for a week or two until the other parent opens? I've vibrated some of the pollen onto some aluminium foil, folded it and put in the freezer. Sound sound? T
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Post by steev on Oct 27, 2012 1:13:00 GMT -5
Interesting question; haven't got a clue. Heat seems to kill tomato pollen, but cold? Well, nothing ventured...
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Post by raymondo on Oct 27, 2012 5:47:18 GMT -5
Freezing is reported to work. Didn't for me though.
Won't there be more flowers on the donor? At what stage do you want the seed parent flower to be? I emasculate and pollinate as soon as the petals emerge, well before the flower actually opens.
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Post by templeton on Oct 27, 2012 5:57:05 GMT -5
I was in part thinking ahead to the forthcoming season when i might have parents in different locations... And yes, the parents should have enough flowers for me not to get too carried away with it all. But I've got 11 F2 Jaune FlammeeXDwarfs that I want to back cross as pollen donors to JF. I would rather have the back crosses growing out as fruit on JF before waiting around to see if the F2s produce a dwarf JF for me - insurance, I suppose. Having pollen to hand as the JF flowers open would just be convenient. If i wait for the F2s to colour up before i do the backcross, i might be struggling to get an F1 back cross fruiting this season. If you get me drift.
As it turned out, after posting, I went out to the hothouse to water, and found I'd left my alfoil pockets sitting in the sun all day - could have sworn i put them in the freezer... T
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Post by raymondo on Oct 28, 2012 3:49:12 GMT -5
Why not do a backross using JF as pollen parent and one of the dwarf F2s as seed parent. Then, next season, if you grow a plant over winter, you'll have plenty of BCF2 that will be 3/4 JF. I'm doing that with ny cross from last season. Dwarf x Ropreco Paste. Grew the F1 over winter. Now have lots of F2 dwarves. Will backcross one, doesn't matter which, with Ropreco Paste pollen and repeat.
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Post by templeton on Oct 28, 2012 17:28:18 GMT -5
Of course. Not thinking straight - got my donors and seeds mixed up. As for choosing a first cross parent, wouldn't it make sense to choose the one closest to the desired final result? So, in my case that would mean picking a dwarf F2 parent that was at least the right size and colour fruit to fit the Jaune Flammee template? T
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Post by raymondo on Oct 28, 2012 23:09:12 GMT -5
Of course. Not thinking straight - got my donors and seeds mixed up. As for choosing a first cross parent, wouldn't it make sense to choose the one closest to the desired final result? So, in my case that would mean picking a dwarf F2 parent that was at least the right size and colour fruit to fit the Jaune Flammee template? T One could, but it doesn't matter that much to me. I figure if it's 3/4 Ropreco Paste, it's going to be very easy to find what I want the following season. In any case, I find late season pollinations less successful, so waiting for a good match fruitwise might be futile, in my garden at any rate.
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Post by PapaVic on Oct 29, 2012 15:42:56 GMT -5
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Post by templeton on Oct 29, 2012 19:03:58 GMT -5
Thanks PV T
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