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Post by samyaza on Sept 17, 2012 6:52:53 GMT -5
Hello. I heard of Orange Corn a few years ago but still never found any source for it. Does anyone already did, or have some more info on genes involved in beta-carotene enhancement ? |
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Post by mayz on Sept 17, 2012 7:02:35 GMT -5
Orange color could be obtained with an allele of pericarp color gene (P1o). This allele is present in the OP Astronomy Domine. But this gene doesn't affect carotene content of the endosperm.
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Post by mayz on Sept 17, 2012 8:00:55 GMT -5
Some informations in the introduction of this article www.plantphysiol.org/content/147/3/1334.full.pdfregulation of phytoene synthase expression seems very complex. Rare Genetic Variation at Zea Mays crtRB1 Increases ß-Carotene in Maize Grain Jianbing Yan, Catherine Bermudez Kandianis, Carlos E. Harjes, Ling Bai, Eun-Ha Kim, Xiaohong Yang, Debra J. Skinner, Zhiyuan Fu, Sharon Mitchell, Qing Li, Maria G. Salas Fernandez, Maria Zaharieva, Raman Babu, Yang Fu, Natalia Palacios, Jiansheng Li, Dean DellaPenna, Thomas Brutnell, Edward S. Buckler, Marilyn L. Warburton & Torbert Rocheford Breeding to increase ß-carotene levels in cereal grains, termed provitamin A biofortification, is an economical approach to address dietary vitamin A deficiency in the developing world. Experimental evidence from association and linkage populations in maize (Zea mays) demonstrate that the gene encoding ß-carotene hydroxylase 1 (crtRB1) underlies a principal quantitative trait locus associated with ß-carotene concentration and conversion in maize kernels. crtRB1 alleles associated with reduced transcript expression correlate with higher ß-carotene concentrations. Genetic variation at crtRB1 also affects hydroxylation efficiency among encoded allozymes, as observed by resultant carotenoid profiles in recombinant expression assays. The most favorable crtRB1 alleles, rare in frequency and unique to temperate germplasm, are being introgressed via inexpensive PCR marker-assisted selection into tropical maize germplasm adapted to developing countries, where it is most needed for human health. |
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Post by Deleted on Sept 17, 2012 14:14:22 GMT -5
Look for a breed of maize called "Cateto" ("Cateto Sulino", in particular). I grew it this year, and some kernels were orange almost to the point of being red. The pericarp was completely colorless, and the orange pigment came from the starch. I'll try to get up a picture in the next few days.
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Post by johninfla on Sept 19, 2012 8:49:52 GMT -5
Some of the morado I grew this year turned out orange-ish. I have three ears I am planning to plant to see if they will stay that color or revert back to purple. I have read somewhere that the canteño variety of morado has that color in its background. If you would like, I'd be pleased to send you some of the seed I saved. (To be honest, I have far more varieties of corn in my freezer than I can possibly hope to plant and I would love for someone to plant this and see how it comes out.) PM me with your info, if you would like the seed. It is a pretty color!
John
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Post by RpR on Sept 20, 2012 16:49:59 GMT -5
Sandhill Preservation
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Post by frmaiz on Nov 10, 2017 9:57:51 GMT -5
I breed orange flint hybrids, in Argentina.
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Post by richardw on Nov 10, 2017 16:20:33 GMT -5
That one on the right looks amazing
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Post by keen101 (Biolumo / Andrew B.) on Nov 10, 2017 18:11:36 GMT -5
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Post by prairiegardens on Nov 11, 2017 0:10:09 GMT -5
Wow. I've never seen corn even close to the colour of that orange one. It looks wonderful.
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Post by grano on Nov 11, 2017 10:00:03 GMT -5
frmaiz,
What climate, soil, and latitude is your orange maize adapted to?
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Post by RpR on Nov 12, 2017 15:35:12 GMT -5
Strubbes Blue - 98 days - Beautiful colored blue
shades from pale turquoise to deep blue in color. 2 oz.
Pkt. $2.00; 2 Pkts. $3.50 Certified Organic Seed
Strubbes Blue Grey - 100 days - One of Mr. Strubbes
more subtle creations. Kernel color is a pale grey to
dark purple. This was one of the colors Mr. Strubbe
used to enhance the corn paintings he would make
using the ends of the kernels. Words cannot begin to
describe the realistic look he was able to obtain by
using only the ends of the kernels to make fabulous
“paintings”. While this particular color is not the most
outstanding, it was essential to get the proper color in
the necks of male turkeys. 2 oz. Pkt $2.50 Certified
Organic Seed
Strubbes Brown- 105 days- 7 foot stalks of plants
with beautiful shades of brown for color. Occasional
off colors will appear. 2 oz. Pkt. $2.00; 2 Pkts. $3.50
Certified Organic Seed
Strubbes Green- 105 days - 6 foot stalks, 10 to 14
rows of green shades on 6 inch ears. Off-colors can be
expected. (UNAVAILABLE FOR 2017)
Strubbes Orange- 97 days- A gorgeous shade of
bright orange. When dealing with this color, please
expect as a result of the genetics to have a few ears that
are red and a few that are yellow as well as shades of
orange. 2 oz. Pkt. $2.00; 4 Pkts. $6.00 Certified
Organic Seed
Strubbes Pink - 100 days - Beautiful, bright,
carnation pink kernels on 8 inch ears on 7 foot stalks.
2 oz. Pkt. $2.00; 2 Pkts. $3.50 Certified Organic Seed
Strubbes Purple- 107 days- Another of Mr. Strubbes
creations, except the kernels are a nice shade of purple.
2 oz. Pkt. $2.00; 2 Pkts. $3.50; 4 Pkts. $6.00
Certified Organic Seed
Strubbes Red - 100 days - One of the more interesting
of Mr. Strubbes corns. It has also been a puzzle as to
how he selected and maintained it. We will only send
the red seed, but it has consistently produced about
25% blue and white ears. Plants are around 6 to 7 feet
tall with 6 to 8 inch ears. 2 oz. Pkt. $2.00 Certified
Organic Seed
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Here are some .colors if you wish to have a colorful corn patch
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