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Post by walt on Jun 9, 2019 14:34:31 GMT -5
As I understand it, the outcrossing gene and the dwarf gene is the same gene. All non-dwarf plants from seeds of the dwarf plants are hybrids. In the F2, all dwarf plants will be the more outcrossing type flowers. The outcrossing dwarfs will have some selfing. They do make pollen, but the pollen matures late, increasing the outcrossing rate. So the only difficulty, using this gene, is getting the dwarfs to grow. So far, they seem to have very low vigor. But this shouldn't affect the hybrids or later generations that don't carry the gene.
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Post by walt on Apr 25, 2019 10:30:43 GMT -5
The trigoliate orange mutants that taste "really bad" are still very sour. The juice needs water and sugar to make it drinable. But an amature breeder, Dr. John Brown, MD., had a couple of mandarin hybrids that were 3/16 to 1/8 trifoliate orange which were said to be pretty good. They grew to maturity in Dallas, TX as well as other places. But a worse than usual winter killed those in Dallas. Dr. Brown's selections seem to be extinct now.
I don't know why the different font today.
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Post by walt on Apr 23, 2019 18:31:00 GMT -5
Poncirus trifoliate orange, or hardy orange. Genus Poncirus is a close relative of genus Citrus. They cross readily, and their hybrids have fertile pollen. Unlike citrus, they are hardy to zone 5 and beyond. But except for a couple of mutations, they taste really bad. I started a thread on breeding hardy citrus in the plant breeding section here. But mostly I post about it on tropicalfruitforum.com There are at least 4 other people there working on hardy citrus.
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Post by walt on Apr 23, 2019 0:23:47 GMT -5
Apricots are past. Plums in full bloom or about done, depending on species. Kansas has 4 species native, and hybrid swarms are common where they overlap. I seldom see peaches any more so don't know.
Poncirus are just leafing out. Maybe they will bloom this year? I can't tell yet.
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Post by walt on Apr 23, 2019 0:16:19 GMT -5
The link gives a name I haven't seen before. Thinpyron intermedium is the name used by those breeding it. And Agropyron intermedioum is the formerly accepted name back when I was a pro working with it. I see the link does also give the old name. The taxonomy of the family was messed up, in part, because western scientists were ignoring soviet scientists, who had more species to work with, giving a more complete picture of the family. But when Kay and Asay did a taxonomy based on chromosomes, only then did the taxonomy make sense. There was debate going on about which taxonomy is more useful. Taxonomy based on chromosomes showing actual relationships, or a taxonomy based on morphology that easily identifies plants in the field.
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Post by walt on Apr 22, 2019 18:56:16 GMT -5
I'm sorry to hear that. I have been offered seeds from Poncirus+. I am hoping it is as hardy as regular poncirus.
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Post by walt on Apr 22, 2019 12:01:54 GMT -5
Do you have Ponsirus+? It is said to be better tasting than other pocirus. Since you know Mikkel and Ilya, you probably do. It is also said to have only zygptic seedlings.
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Post by walt on Apr 22, 2019 11:50:52 GMT -5
I wonder too. Do you have time and space for it?
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Post by walt on Apr 15, 2019 20:53:10 GMT -5
Ypu may be able to get US 852. Mikkel in Germany has it. It is a mandarin x P. trifoliata. It is terribly sour, but the juice mixed with water and sugar was ok to drink. More important, Its seedlings are 60% to 70% zygotic, so it is worth breeding with. I have several F2 seedlings growing and I hope for improvement.
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Post by walt on Apr 15, 2019 18:24:33 GMT -5
Kumin ordered seeds that were being to nurseries or farmers for use as root stocks. They were sold by the liter, or maybe quart, since it was in the USA. He bought a variety that has 15$ zygotic seeds. You can read details on tropicalfruitforum.com . Kumin will also answer questions if you ask. Also Mikkel in Germany and Ilva in France report there experiences and answer questions there.
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Post by walt on Apr 7, 2019 13:47:33 GMT -5
I've been posting about my citrus breeding on tropicalfruitforum.com , but today I'll get folks here up to date. I bought 14 fruit of US 852 from Stan Mckennzie, a grower and seller of more cold hardy citrus. US 852 is mandarin x trifoliate orange. It was bred as a root stock for citrus, but has not been used as a root stock because it has 60% to 70% zygotic seedlings. Citrus growers want high percentage nucellar seedlings for uniform root stocks. But as a breeder, I want lots of zygotic seeds. So I have about 50 seedlings from US 852, about 30 of them will be of use in my breeding. Someone who goes by eyeker sold me a box of taitri. Taitri is Taiwan lemon x trifoliate orange. Taiwan lemon is a sour orange that is used as a lemon. Most of the seeds were monoembryonic, which usually means zygotic. So I have about or more 50 F2 sour orange x trifoliate orange. And I got a box of (Clem x tri) x Clem, That is (Clementine x trifoliate orange) x Cementine. These should be all zygotic. Again over 50 seedlings.
And someone who goes by Kumin planted 20,000 seeds of an F1 citrus x trifoliate orange. The variety he used has about 15% zygotic seeds, so they should be 17,000 clones of the seed parent, and 3,000 zygotic seedlings. They seedlings were left outside over the winter in Pensylvania this last winter. 10 seedlings seem to have survived.
Ilya in France has been breeding for cold hardy citrus for some time. He now has some 3/4 trifoliate orange, 1/4 grapefruit. Given Kumin's success, I think Ilya might have a winter hardy tree if it were in my location.
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Post by walt on Mar 19, 2019 15:04:56 GMT -5
Highs around 60F and lows just above freezing for the rest of the week. Life is good.
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Post by walt on Mar 1, 2019 13:28:24 GMT -5
I have only do snow removal twice this winter, 4 or 5 hours each time. Both times twenty-somethings helped, though it wasn't their job. Looks like this weekend will be the third time this winter. Maybe for the last time this winter. Maybe not. Like Steev said. "I do it because I can. And I can because I do it."
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Post by walt on Feb 26, 2019 15:29:59 GMT -5
Kansas had another cold spell last weekend and another is expected this weekend. Last weekend it rained all day, until lowering temps started freezing the rain, then covered the ice with a few inches of snow. Meanwhile wind was blowing hard. Truck blew off the interstate. And part of my job is snow and ice removal at a truck stop. No. I'm not the one in a warm cab on the tractor removing ice and snow. I'm the one working where the tractor can't reach. Sucks.
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Post by walt on Feb 21, 2019 23:29:50 GMT -5
Crop Science magazine used to have a section at the back with all the latest germplasm releases. They included pretty detailed information on them. I think the information is online somewhere, but I don't know where. Iowa Stiff Stalk Synthetic Is a composite of inbreds selected for good lodging resistance. Then it had many generations of selection for strong stalks and yield. It breeds like northern flints, making superior hybrids with southern dents. At one time, and I think still, all commercial hybrid field corn had one parent derived from Iowa Stiff Stalk Synthetic. I think you could find good composites made of southern dents, which would pair well with ISSS.
I'm in central KS, Ellsworth. Glad to have you join.
Several of our members have gone to a new site, opensourceplantbreeding.org/forum/ Obviously some of us still check in here regularly. And there is and "always" will be lots of good information here.
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