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Post by DarJones on Feb 14, 2010 2:18:51 GMT -5
I have a very drought tolerant corn that is selected out of Hickory King from my 1988 garden. We had a severe drought that year and from 3 rows of corn I got exactly 3 ears. It was the worst year I've ever seen for corn. I saved the 3 ears and have grown them out several times over the years. If we have a drought year, I re-select for the biggest and best ears. I now get about 3/4 of the plants producing a decent ear even in the worst dry weather.
I also know exactly why this corn is so drought tolerant. It produces the biggest root system I've ever seen on corn.
DarJones
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Post by blueadzuki on Feb 14, 2010 10:46:06 GMT -5
anyone ever compared Oxacan to any of the other primary green corns. I know of two others "green" and "Green Bay Packers" (which is yellow and green) Both on the sand hill list
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Post by Alan on Feb 15, 2010 19:56:06 GMT -5
I have a very drought tolerant corn that is selected out of Hickory King from my 1988 garden. We had a severe drought that year and from 3 rows of corn I got exactly 3 ears. It was the worst year I've ever seen for corn. I saved the 3 ears and have grown them out several times over the years. If we have a drought year, I re-select for the biggest and best ears. I now get about 3/4 of the plants producing a decent ear even in the worst dry weather. I also know exactly why this corn is so drought tolerant. It produces the biggest root system I've ever seen on corn. DarJones Hey Dar, don't tell anybody, but I'll tell you another secret for selecting drought tolerance as related to me by my friend Jim Culpepper. Tassle and Silk emergence on the same day! Trust me, it works wonders and just a couple of years of selection for this will improve any particular lines drought tolerance. Blue, I haven't compared any of the other greens yet, but there is one other line other than those that you mentioned that I know of called appropriately John Deere. I always figured it was probably just a selection of Oaxacana but I haven't grown it so don't know for sure. If the greens were more productive I'd probably grow some more of them. Earth tones does have some green kernels too, probably wouldn't be hard to segregate for the green color from there either. A few years ago I released an early dent genepool that had earthtones Oaxacan green and a few others in it, but I never heard anybody report back about growing it out? Any of you guys out there ever work with that material by chance?
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Post by blueadzuki on Feb 15, 2010 21:06:17 GMT -5
Blue, I haven't compared any of the other greens yet, but there is one other line other than those that you mentioned that I know of called appropriately John Deere. I always figured it was probably just a selection of Oaxacana but I haven't grown it so don't know for sure. If the greens were more productive I'd probably grow some more of them. Earth tones does have some green kernels too, probably wouldn't be hard to segregate for the green color from there either. A few years ago I released an early dent genepool that had earthtones Oaxacan green and a few others in it, but I never heard anybody report back about growing it out? quote] Actually I'm fairly sure That John Deere and Green Bay Packers are the same corn. Actually, now that I throw my memory back I may have been simply remembering the byline with John Deere, which may have made reference to the Green Bay Packers who after all share the same green and yellow color scheme. Sandhill isn't listing John deere this year or I'd cross check. Wilda's pride can also throw green kernels, which isn't suprising given that. it seem to have pretty much ALL conceivable corn colors (note I said colors, not patterns) in its genepool and (I've had a pet theory for a while that Wilda's pride (which according to what I read was a "found" selection, not the result of a directed breeding may have a lot in common genetically with Earth Tones, either as a cross with Earth tones as one of the parents or a reversion to a flint form while keeping the earth tones pallete.
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Post by Andre on Jul 5, 2013 5:51:35 GMT -5
One day however, I promise you all, I will introduce a green sweet corn, I even planned two names for two lines: Audrey III Kryptonite So Alan, did you succeed in this project ? don't tell anybody, but I'll tell you another secret for selecting drought tolerance as related to me by my friend Jim Culpepper. Tassle and Silk emergence on the same day! Trust me, it works wonders and just a couple of years of selection for this will improve any particular lines drought tolerance. Yes this is definitely true ! A short ASI (Anthesis Silking Interval) is known to be a good characteristics for Corn drought tolerance as you can see in this study : ainfo.cnptia.embrapa.br/digital/bitstream/item/53030/1/Performance-selected.pdf
Does anyone know good populations with short ASI ?
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Post by Andre on Sept 4, 2013 4:17:02 GMT -5
The green coloration is the result of yellow and purple expressing in the same place so the green is actually an illusion, but very hard to come by any other way than by using this corn. One of my friend grew true green Oaxacan corn this year (without any intercrossing). It was deep green kernels but the ears are more yellow brownish than green. Oaxacan green cornHow can we keep the deep green in the off spring ?
Does anyone know if the the green is a mix of yellow endosperm with purple pericarp or some other combination ?
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Post by blueadzuki on Sept 4, 2013 5:49:08 GMT -5
As far as I can tell green is the result of blue-bluish purple aleurone over yellow endosperm. That's why you tend to get a few kernels with yellowish tops (blue weak to turned off) and some with bluish purpilish tops (blue so strong it's covering up the yellow completely, or the yellow being weak to turned off) Pericarp doesn't really come into it (from what I've seen the pericarp of Oxacan is pale brown). As for upping the dark green, the best advice I can think of would be to simply select for dark green kernels. Getting the corn 100% of any shade is probably nearly impossible (since there will always be kernels that will revert) but if you pick for the shade you want you might be able to skew things towards the desired result.
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te
gopher
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Post by te on Sept 28, 2013 23:39:04 GMT -5
This spring, my wife ordered Oaxacan Green corn and planted about 100 seeds, which grew well. We picked it today but had a surprise. We had two ears of red corn with a seed more like popcorn than a flat dent kernel. Is this a known occurance with OG, or a case of contaminated seed? We purchased the seed from seed savers. The rest of the ears looked really good. We set aside the best ears from the best plants for the next generation. But is the odd-ball ear a known receive trait or just an oops? Thanks!
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Post by DarJones on Sept 29, 2013 0:44:43 GMT -5
It is a common recessive that Oaxacan Green picked up over the years. It would take some serious breeding effort for about 4 generations to eliminate it.
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te
gopher
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Post by te on Sept 29, 2013 14:17:28 GMT -5
Thanks for the quick reply. Is there any clue as to if a plant is going to produce a red ear, so as to de-tassel that plant and remove it from the genetic pool? By the time you see the developed ear, it is a bit late to do much selection against it, isn't it?
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Post by Joseph Lofthouse on Sept 29, 2013 16:43:21 GMT -5
Thanks for the quick reply. Is there any clue as to if a plant is going to produce a red ear, so as to de-tassel that plant and remove it from the genetic pool? By the time you see the developed ear, it is a bit late to do much selection against it, isn't it? I don't grow Oaxacan Green, but often times in other varieties of corn a red pericarp is associated with some degree or other of red coloration in other parts of the plant: For example in the stalks, leaves, or tassels. Even if you were only able to select against red ears when they appear, the constant selection against red cobs would tend to diminish how frequently they occur. Ear-to-row planting could help identify sibling groups that have a higher concentration of the red-cob gene so that those family groups could be eliminated from future plantings. (If one plant in a sibling group has a red cob, then the siblings can be suspected of carrying a hidden gene for red cobs.)
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Post by blueadzuki on Sept 29, 2013 17:00:12 GMT -5
The one problem I can see in that is that NORMAL Oxacan green has a somewhat reddish pericarp (not so red it covers anything, but the cobs and the edges often have a reddish cast. So it think there is a bit of red in the parts of ALL of them. Rouge out anything with a touch of red, and you'd probably end up rouging out the whole population.
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Post by steev on Sept 29, 2013 19:52:38 GMT -5
You could black out red, but you can't "rouge" it out; coal to Newcastle.
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Post by DarJones on Sept 29, 2013 22:39:35 GMT -5
Methinks Steev is a bit of a "rogue" at times.
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Post by steev on Sept 29, 2013 23:24:58 GMT -5
No; just one of the language police; so many of us have our areas of compulsive nerditude.
I like Oaxacan Green pretty much, though I've never gotten a rogue red ear (nor a rouge one, for that matter). I need to plant a (for me) sizeable area this year, for seed renewal/increase and personal satisfaction. I sure hope the coming year isn't the drizzles this year was. Of course, one can hope in one hand and (whatever) in the other and see which fills up first. Still, if I weren't an optimist, I'd not be growing stuff.
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