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Post by cornhusker007 on Jan 30, 2015 20:22:00 GMT -5
I am going to start my project of creating a multi eared hybrid dent corn. I have found quite a few varieties from sandhills preservation. Does anyone know of any more caches of seedstock that may have have the trait im looking for? Besides G.R.i.n. that is.
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Post by grano on Jan 31, 2015 12:37:35 GMT -5
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Post by DarJones on Jan 31, 2015 12:45:03 GMT -5
Describe a little better exactly what you are trying to achieve and where it will be grown. If I were attempting to grow a high quality dent corn, I would start with Cherokee Squaw. It is a soft dent that I provided to Sandhill after getting a start from George Mclaughlin. The traits it brings are high production, relatively short strong stalks at 8 to 10 feet tall, with large primary and secondary ears. You might also look at Wapsie Valley corn. There are several suppliers this year, but I recall that fedcoseeds carries it. www.fedcoseeds.com/ogs/search?item=8071
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Post by cornhusker007 on Jan 31, 2015 19:22:30 GMT -5
Well I'm mostly focused on a variety that can consistently produce multiple ears per stalk. For the most part it will be for animal feed i.e earledge where only the ears are picked and ensiled. So having another cob per plant would help with tonnage.
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Post by DarJones on Feb 1, 2015 19:54:31 GMT -5
Are you planning on making your own F1 hybrid? Or a multi-variety composite? The Wapsie X Cherokee Squaw should be an interesting F1 hybrid in terms of increasing production while maintaining significant feed production potential. If you are looking for varieties to make a composite, check out:
Boone County White: 135 days. WOW what a corn!!! Final plant height was just over 16 feet with the average ear height at 10 feet off the ground. Ears average about 11 inches in length with 16 to 20 rows of white kernels per cob.
Cherokee Squaw: 135 days. Excellant stalk standability, 8 to 10 foot stalks with 8 to 10 inch ears of basically white and purple kernels. Great for cornmeal.
Neals Paymaster: 110 days. A high yielding white seeded field corn with 12 foot stalks. Plants are very productive with 2 to 3 ears per stalk. Ears are 8 inches long with an average of 16 rows per cob.
Silver King: 130 days. A great silage corn as well as feed corn. Plants average 12 to 13 feet tall with 12 inch ears, usually 2 per stalk. Ears average 12 to 14 rows per cob.
Warners: 135 days. 10 foot stalks, huge stalks and the largest ears of any corn I've grown. Do not plant thickly. Grows slowly but is massive. Give it plenty of space. Yellow on red cobs.
Note that these should all freely crosspollinate with the possible exception of Neal's Paymaster. You might have to delay planting it by 2 weeks to get tasseling to align.
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Post by cornhusker007 on Feb 2, 2015 13:07:56 GMT -5
Golden glow 100 day, Holcomb prolific 110, peru 120, silvermine 110, Warner's 135.
Yes I plan on inbreeding these open pollinated varieties this year and and then crossing for hybrids next year.
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Post by oxbowfarm on Feb 25, 2015 9:42:09 GMT -5
Why not just cross them this year? The inbreeding isn't going to do a darn thing but waste a year. You can't make an inbred line in one cycle of inbreeding. Just crossing the OPs will tell you if you get a jump from heterosis.
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Post by cornhusker007 on Mar 4, 2015 14:16:49 GMT -5
I realize that I cant exactly make a stable inbred in just one year. It should help homogenize the genes somewhat right?
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Post by Joseph Lofthouse on Mar 4, 2015 14:26:41 GMT -5
I am going to start my project of creating a multi eared hybrid dent corn. In my experience, the number of ears that a corn plant produces is highly dependent on how much space the plant has to grow in. It averages about 1 cob per square foot. The same variety that produces 15 ears per plant if planted as a specimen might not produce any cobs if overcrowded, or only 2-3 cobs if planted at typical density.
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Post by oxbowfarm on Mar 5, 2015 7:52:34 GMT -5
I realize that I cant exactly make a stable inbred in just one year. It should help homogenize the genes somewhat right? You don't need the parent lines to be inbred to see hybrid vigor in the offspring of the cross. You need a good amount of heterosis in the offspring. But that doesn't require the parents lines to be inbred lines. Having the parent lines as inbreds is much more about uniformity and predictability than hybrid vigor. Commercial hybrid corns use very sophisticated inbred lines that have been in development for a very long time. The hybrid corn industry is almost a century old at this point, and many of the inbred lines have hundreds of generations of development behind them to make them what they are. Creating an inbred line from scratch as a one man project is IMO pretty difficult. It is entirely possible that you will get a jump in hybrid vigor by crossing some of those varieties, but you don't need them to be inbred to test that. Just cross them this year and see. You can still inbreed them too, you just are going to need to be doing a lot of hand pollination, but that's a given for a project like this. It is impossible to create an inbred line without hand pollinating anyway. Next season you can grow out your hybrids and see which ones take you towards your goals. Then keep working with those lines, and inbreeding if you want too.
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Post by samyaza on May 19, 2016 12:14:38 GMT -5
Hello all.
I learnt about advance in hybrid corn yesterday. I'd always thought inbred lines were all equally depressed and that kind of breeding was a genetic dead-end.
In fact, I learned about the more than viable inbred lines used nowadays and the way they were selected. To me, it meets the problem when inbreeding a new race of animal. Constant outbreeding accumulated plenty of depressing recessive alleles, but nothing a fairly strong selection pressure can overcome. Moreover, new techniques such as doubled haploids can greatly accelerate the process.
I'm not surprised that the best inbred lines give the best hybrid lines. I'd be curious to compare the yields of the inbreds with those of a corn population.
I suppose selecting an inbred line from a commercial hybrid would be easier as the detrimental alleles have already been blown away in the original, inbred parents. And I suppose the same is true for other outbreeding crops such as rye, onions...
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