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Post by dld on Feb 19, 2010 8:39:03 GMT -5
Could someone explain this epidermis skin color thing? Why is it important?  |
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Post by darthslater on Feb 19, 2010 10:14:20 GMT -5
Could someone explain this epidermis skin color thing? Why is it important? Epidrmis is the thin skin memrane thet you pull off of the very outside of the tomato,when held up to the light it is clear or yellow etc. This is a sore subject to me. I am not going to call a tomato yellow when it is clearly ,visually ORANGE. I can see where the confusion would arise on this subject, Good example: Dr.Wyches "Yellow".even one that doesnt color up fully is a washed orange. Another is Brandy wine "Yellow". I have yet to pick a yellow one. This is another instance of science over common sense! Darth |
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jcm05
Administrator
Posts: 1,685
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Post by jcm05 on Feb 19, 2010 10:23:30 GMT -5
There are two epidermis colors...yellow(dominant) and clear(recessive). I wouldn't call them important, but they play a large role in the fruit appearance color. On dark fruit, yellow epidermis will make the fruit appear "brown" and clear skin will make it appear "purple". Take a look at this pic which clearly shows the yellow epidermis present on Cherokee Green...  |
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Post by gardenfrog on Feb 19, 2010 22:08:49 GMT -5
The good folks at OSU are developing a "Blue" tomato that is supposed to have many of the nutrition values as blueberries. This isn't "Frankenfood", but years of crosses of many diffferent varieties. I understand that the extra nutritional "punch" is in the blue skin. Does anyone have any wisdom on this one?
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Post by darthslater on Feb 19, 2010 22:13:40 GMT -5
The good folks at OSU are developing a "Blue" tomato that is supposed to have many of the nutrition values as blueberries. This isn't "Frankenfood", but years of crosses of many diffferent varieties. I understand that the extra nutritional "punch" is in the blue skin. Does anyone have any wisdom on this one? Yes!!  |
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Post by frogsleapfarm on Feb 19, 2010 22:59:55 GMT -5
At the risk of taking this a different direction .... gs (green stripe) is another epidermal trait. It is reported to be a recessive trait, but also to be weakly expressed in the heterozygous mode. I found this to be the case in growing out a striped x non-striped F1 this winter. Any other experience here?
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Post by frogsleapfarm on Feb 19, 2010 23:08:28 GMT -5
OK, couldn't resist. OSU Blue = P20 = SunBlack. OSU Blue and P20 are different names for the same OSU germplasm, though perhaps different generations. SunBlack is the Italian version, with the same combination of 3 genes controlling anthocyanin accumulation in the pericarp. There's now a handful of folks working with P20 and related F1, F2 and F3 populations - trying to get a tasty black fruited type. Everyone is probably a few years off.
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Post by frogsleapfarm on Feb 19, 2010 23:15:45 GMT -5
Here's a P20 fruit Attachments:
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Post by darthslater on Feb 20, 2010 0:40:24 GMT -5
I didnt want to type all that, hehe!! And see!
Darth
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Post by blane on Feb 20, 2010 7:05:03 GMT -5
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Post by frogsleapfarm on Feb 20, 2010 20:57:21 GMT -5
thanks mulio
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