Member discussion regarding the methods, varieties and merits of growing tomatoes.
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December 13, 2015 | #16 |
Tomatovillian™
Join Date: Sep 2014
Location: France
Posts: 142
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If i've understood correctly, the dominant B gene will produce orange tomato regardless of alleles at R and Y locus ? If so, it is easy to produce an orange version of any tomatoes by introgressing the B allele in your choosen variety by recurrent backcrossing. It will only take a few plant (at least 4) each year and some hand pollination. Maybe the same is true with Del ?
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December 13, 2015 | #17 | |
Tomatovillian™
Join Date: Jun 2012
Location: Minnesota
Posts: 586
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Quote:
It should be easy to select for the presence of B, because it is dominant. But it being dominant may make it hard to select for the absence of the wild-type version of the gene that it can hide. If you're lucky the heterozygous B/b plants will look slightly more red when compared to the homozygous B/B plants. My impression is that Del (Delta-carotene) produces a red-orange color that is not so distinct, so may take some practice to properly select for.
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December 13, 2015 | #18 |
Tomatovillian™
Join Date: Sep 2014
Location: France
Posts: 142
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Ok so it is better to bred orange B from a red tomato. Should be easy to select homozygous by growing enough plants (at least 4 i guess) for each of the selected orange fruited plants, and keeping groups with all orange fruited plants
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December 13, 2015 | #19 |
Tomatovillian™
Join Date: Jun 2012
Location: Minnesota
Posts: 586
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Sounds like a sound plant. I once read the process of using plant families like that to be called "power breeding", as it gives you more power in the breeding process. It lets you isolate homozygous dominant traits faster than you would just by continuously culling the homozygous recessive plants that would crop up. I don't recall where I came across the term, however.
Edit: Apparently the term was coined by Carol Deppe. I found a blog post talking about using the technique in eggplant breeding. (https://toads.wordpress.com/category/eggplant/)
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http://the-biologist-is-in.blogspot.com Last edited by Darren Abbey; December 13, 2015 at 07:48 PM. |
December 14, 2015 | #20 |
Tomatovillian™
Join Date: Sep 2014
Location: France
Posts: 142
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Yes i think she calls it "power imbreeding"
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January 1, 2016 | #21 | |
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Posts: n/a
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Quote:
Last edited by shule1; January 1, 2016 at 04:39 AM. |
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April 14, 2018 | #22 |
Tomatovillian™
Join Date: Jun 2013
Location: Finland, EU
Posts: 2,550
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I know this is an older thread, it just came up when I was doing a Google search on Orange Pear tomato.
Just sowed a variety of this name this spring, I hope it is worthwhile The vendor I purchased it from called it determinate, while another vendor calls it indet.. Any experiences yet anuone? Andrey..? any reliable knowledge about Grusha Oranzhevaya? |
April 14, 2018 | #23 |
Tomatovillian™
Join Date: Apr 2009
Location: Wichita Falls, Texas
Posts: 4,832
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April 14, 2018 | #24 |
Tomatovillian™
Join Date: Jun 2013
Location: Finland, EU
Posts: 2,550
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Hmmm. I know about Aladdin's Lamp, but the one I have, seems to be smaller, growing in clusters of cherry size fruits..
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April 14, 2018 | #25 | |
Tomatovillian™
Join Date: Apr 2009
Location: Wichita Falls, Texas
Posts: 4,832
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Quote:
That was a convoluted sentence! |
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April 14, 2018 | #26 |
Tomatovillian™
Join Date: Jun 2013
Location: Finland, EU
Posts: 2,550
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Imp: My seeds were purchased from Nikitovkaseeds via ebay last year (a vendor I find quite reliable, all I ever bought from her was as described) and it's described as det...
Another vendor is Tomato Eden, with slightly different info - claiming that it's indet after all. http://tomatoeden.com/?593,orange-pear-cherry |
April 14, 2018 | #27 |
Tomatovillian™
Join Date: Apr 2009
Location: Wichita Falls, Texas
Posts: 4,832
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Thank you!
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Tags |
color , orange , pear tomatoes , tangerine , tomatoes |
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