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bower · March 31, 2014

Those colors are amazing, Darren. I don't think anyone could resist a taste.

A little more about Delta:
The mutant is an introgression from S. Penelli, according to the section on color genetics in this excellent article:

http://jxb.oxfordjournals.org/content/58/14/3841.full

There's reference to "high delta tomato seeds" in this article from the '50's. So the allele may be out there in commercial cultivars developed since then.
http://www.jstor.org/discover/10.230...21103767063047

There's another picture of the phenotype here:

http://www.esalq.usp.br/tomato/Del.pdf

Delta is on chromosome 12 and is not allelic to Beta nor tangerine.

Since Delta and Beta are dominant, shouldn't we expect to see orange fruit in the F1? If so, that would immediately distinguish them from fruit with the tangerine t allele. I made several crosses with Zolotoe Serdtse last fall and the F1 seedlings are up. If those F1's are red, can I conclude that the orange color came from tangerine?

March 31, 2014	#11
bower Tomatovillian™ Join Date: Feb 2012 Location: Newfoundland, Canada Posts: 6,793	Those colors are amazing, Darren. I don't think anyone could resist a taste. A little more about Delta: The mutant is an introgression from S. Penelli, according to the section on color genetics in this excellent article: http://jxb.oxfordjournals.org/content/58/14/3841.full There's reference to "high delta tomato seeds" in this article from the '50's. So the allele may be out there in commercial cultivars developed since then. http://www.jstor.org/discover/10.230...21103767063047 There's another picture of the phenotype here: http://www.esalq.usp.br/tomato/Del.pdf Delta is on chromosome 12 and is not allelic to Beta nor tangerine. Since Delta and Beta are dominant, shouldn't we expect to see orange fruit in the F1? If so, that would immediately distinguish them from fruit with the tangerine t allele. I made several crosses with Zolotoe Serdtse last fall and the F1 seedlings are up. If those F1's are red, can I conclude that the orange color came from tangerine?