Forum area for discussing hybridizing tomatoes in technical terms and information pertinent to trait/variety specific long-term (1+ years) growout projects.
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January 30, 2013 | #46 | |
Tomatovillian™
Join Date: Dec 2007
Location: Espanola, New Mexico
Posts: 606
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That's a good one - I suppose we all follow our noses most of the time! But, to be honest, the linkage is guesswork. We figured Sungold had wild parentage because of the scent, which is unusual, but which wild tomatoes have. Sungold also has unusually high brix levels. There are accessions available (particularly l. chmielewskii) which have that foliage scent and are also known to have the sucr gene. Brix levels in ripe fruit from F2 and subsequent generation Sungold plants with the distinct aroma were found to be significantly higher than those without it. The explanation fits what we have observed, but we can't know for sure without full genetic testing. Makes a great detective story though! Lee |
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January 30, 2013 | #47 |
Tomatovillian™
Join Date: Feb 2006
Location: Alabama
Posts: 2,250
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Either the linkage is partial or else it is easily broken. I've grown several dozen sungold derived lines in the last 3 years and only 1 of the super sweet lines also had the odor of Sungold. These are all F3 or above lines and were specifically selected because flavor was exceptionally good and sweetness was very high.
DarJones Last edited by Fusion_power; January 31, 2013 at 02:00 AM. |
January 30, 2013 | #48 | |
Tomatovillian™
Join Date: Mar 2011
Location: Raleigh, NC
Posts: 1,448
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Ah, this is good to know. I have several crosses with Sungold in the F2 stage and was considering using the unique smell as an early screen.
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January 30, 2013 | #49 | |
Tomatovillian™
Join Date: Nov 2008
Location: Minnesota
Posts: 568
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January 30, 2013 | #50 |
Tomatovillian™
Join Date: Nov 2008
Location: Minnesota
Posts: 568
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February 4, 2013 | #51 |
Tomatovillian™
Join Date: Dec 2007
Location: Espanola, New Mexico
Posts: 606
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My records show a degree of linkage, though I abandoned lines without the scent after F3 because they had, on average, lower brix levels. If I had followed them further, I might have been able to select for high sugar as Dar has done.
I was pretty ruthless in culling the first year's 400 seedlings down to 36 and later to 18 lines and finally 6 lines. They all maintain the peculiar fragrant foliage and the lively sweet bite of the original hybrid. The main difference is some green gel around the seed. All are regular leaf and quite early. For me, SunSugar was a compact plant without the vigor of SunGold, and had a different flavor. It may have been that summer though. We had heat and wildfires throughout the season. Hope everyone's garden plans are on schedule. Lee |
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