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Old September 9, 2015   #92
Fusion_power
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Join Date: Feb 2006
Location: Alabama
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There are two separate genes involved. One is Tangerine on chromosome 10 in Jaune Flamme.

http://tgrc.ucdavis.edu/Data/Acc/GenDetail.aspx?Gene=t

The other is Beta Carotene on chromosome 6 in 97L97.

http://tgrc.ucdavis.edu/Data/Acc/GenDetail.aspx?Gene=B

The key difference is that Tangerine is from interrupting the lycopene biopath. The tangerine color is from accumulation of prolycopene which gives a rich orange color. When heterozygous with a normal lycopene gene, prolycopene is converted into lycopene which is red. Therefore a cross of Tangerine X Lycopene always produces a red Lycopene fruit.

Beta Carotene is different in that it is a parallel biopath to lycopene. You can get both lycopene and beta carotene into the same plant. Caro Red is just such a plant with both beta carotene and lycopene in the same fruit. The result can vary from pale reddish orange to rich orangish red. Caro Red!

Last edited by Fusion_power; September 9, 2015 at 09:31 PM.
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