jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Dec 7, 2022 11:33:02 GMT -5
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Post by ilya11 on Dec 7, 2022 12:37:07 GMT -5
Hope it will improuve with time. Here is mine harvested today.
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Florian
Junior Member
Solothurn, Switzerland
Posts: 83
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Post by Florian on Dec 8, 2022 2:06:50 GMT -5
I see the albedo is thinner on Ilya's fruit. Could that improve over time too?
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Post by ilya11 on Dec 8, 2022 4:03:13 GMT -5
Could be also due to the fact that my mother plant is in open ground, while Jiří has it still in pot.
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Dec 28, 2023 5:06:20 GMT -5
My Ichangstar 60 had no fruit this year, but Ichangstar 61 had its first fruit this year. There were only a few flowers on the plant in late June because it was not placed in the greenhouse in the spring, but transferred from the over-wintering room to the outside in late April. Ichangstar 61 flowers The fruit was still rather green on November 8...
The fruit was picked on November 27 when it was almost fully yellow. Ichangstar 61 has nice large leaves with attractive autumn colour.
The fruit was stored for a month in cold storage and tested on December 27. The fruit weighed 40 grams and was 5x4 cm in size, containing only a few undeveloped small seeds.
No juice could be squeezed out, the taste was a little bitter, but acceptable and reminiscent of grapefruit. No sticky oils or disgusting aftertaste.
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Post by tedburn on Dec 29, 2023 16:29:37 GMT -5
Interesting report Jibro. Also I was astonished about the Ichang x Orange, I only knew Ichangensis x sinensis, but with fruits with no seeds and good orange taste. Whi did make the cross of the Ichang x Orange and how is the taste ?
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Dec 30, 2023 0:57:28 GMT -5
Ichang papeda x Orange was the most sour of the 4 varieties in the photo and had the least amount of pulp, after removing the seeds there was not much pulp left to taste. But it had a lot of juice and some orange aroma, Brix 12°, maybe could be used for juice or making jam.
I obtained the budwood from the Czech grower Karel Mundl as Ichangensis x sinensis, but unfortunately I did not find any information about the origin of this variety...
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Post by ilya11 on Jan 2, 2024 4:57:00 GMT -5
Hello Jiry, Have you been able to test the hardiness of Ichangstars without protection ? This year I had another sibling from this cross Ichangstar70 that flowered for the first time; I posted a report on another forum
Also, sometime ago I got a genuine ichangesnsisXsinensis from B.Voss. Fruits were completely ripe already in November, yellow and soft. A lot of juice at this stage, ~30 seeds per fruit, nice orange fragrance, very sour, no bitterness, albedo was slightly bitter and astringent.
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Jan 2, 2024 10:02:41 GMT -5
Hi Ilya, are you sure you got Ichangensis x sinensis from Bernhard Voss? I think I sent this to you with other varieties from Karel Mundl when we exchanged Budsticks 3 years ago. I am testing Ichangstar 60 on a small multi grafted tree with other varieties on Flying Dragon rootstock, there was no damage inside an unheated greenhouse in winter 2021. I tested this tree outside without protection last winter and you can see results bellow, Ichangstar lost almost all leaves and some twigs most likely from late growth, your cicitrumelo lost two soft unhardened branches from late growth but even poncirus seedlings losing these too during winter, so it's not important for determining hardiness.
Citrumelo from Adavo and Ichangquat from Adavo have preserved more leaves, Dragon lime didn't survive the winter, most cold was one week in February with 5 consecutive days around -10°C, minimum -12 °C, but there was probably around 40 nights with temperatures bellow 0°C during winter... Photo from June 2023: Survived varieties fully recovered and I am testing this tree right now outside without protection, Ichangstar is keeping leaves for now, Citrumelo and Ichangquat already have more damaged leaves after -11°C night but they were completly covered under snow...
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Post by ilya11 on Jan 2, 2024 12:28:57 GMT -5
Thank you Jiry , your test is very important, not only for the minimal temperatures, but also for the frozen soil duration and shorter vegetative period than in my location. I lost IchXSin from Karel Mundl, it was grafted in pot and got some rot. The bud from B.Voss was grafted in ground to 5star root and now is a quite big bush with spreading horizontal growth.
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Jan 2, 2024 12:45:20 GMT -5
Does Bernhard Voss know the origin of this Ichangensis x sinensis cross? It seems to be the same variety as Karel Mundl has, he bought it in Adavo. I don't think it originated in former Czechoslovakia, there is no mention of it in Czech citrus literature or forums, the "usual suspects" Petr Broža and Karel Urban didn't have it...
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Post by ilya11 on Jan 3, 2024 3:52:55 GMT -5
I shall ask him
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Post by ilya11 on Jan 3, 2024 6:26:49 GMT -5
That is what he replied:
"Hello, it came from Bot. Institute Prague! May be of Russian origin"
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Jan 7, 2024 13:09:57 GMT -5
Thanks for info from Bernhardt, I agree it is most likely that Prague Institute of Tropical and Subtropical Agriculture ITSZ get it from former Soviet Union...
I found on an old Czech citrus forum a list of one grower's varieties, which lists: This grower really got it from ITSZ Prague University in 2001 and the orange parent of this cross was the Washington navel variety.
In my area the weather forecast is for frosts down to -10°C (14F) for the next 7 days so this will be a good test of hardiness, all the outdoor citrus already have visible leaf damage, I guess they will lose most of their leaves within a week. The multi-grafted tree with Ichangstar 60 looks like this after December when it was briefly completely covered with snow 2 times:
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Jan 17, 2024 12:58:19 GMT -5
This is what Ichangstar 60 looks like after 10 days of continuous frost, minimum temperatures of 4 coldest nights was: -9.4°C, -11.3°C (11,6F), -10.9°C, -9.4°C. The leaves are starting to turn brown and will probably drop by spring.
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