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Author Topic: Citsuma Prague  (Read 22924 times)

Jloup27

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Re: Citsuma Prague
« Reply #100 on: November 26, 2018, 03:53:16 AM »
I saw a similar leaf on mine too yesterday

mikkel

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Re: Citsuma Prague
« Reply #101 on: November 26, 2018, 05:11:28 AM »
mine too.

Ilya11

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Re: Citsuma Prague
« Reply #102 on: November 26, 2018, 10:03:26 AM »
No variegation on my Prague, leaves stay green like this up to the spring.


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                       Ilya

Sylvain

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Re: Citsuma Prague
« Reply #103 on: November 27, 2018, 07:01:03 AM »
> The satsuma tissue is killed earlier than the Pt-tissue in the leave, I suppose.
The tissue is not killed and will regreen in spring.
And we think that the parts that change its color are PT parts. It gets the same color than the PT and exactly at the same time.

mikkel

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Re: Citsuma Prague
« Reply #104 on: November 27, 2018, 10:16:22 AM »
@Sylvain I think that is what he meant ;)
leaves on my plant

Ilya11

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Re: Citsuma Prague
« Reply #105 on: November 27, 2018, 10:49:59 AM »
Poncirus trifoliata leaves have similar autumn induced coloration :

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                       Ilya

Florian

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Re: Citsuma Prague
« Reply #106 on: November 30, 2018, 01:44:15 PM »
Some leaves on mine show it too. Interestingly enough, a graft that I made this year does not show it on any of its leaves.


Btw. how is your crop looking this year, Sylvain?

Sylvain

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Re: Citsuma Prague
« Reply #107 on: December 01, 2018, 05:54:23 AM »
On one tree many small fruits , on the other one few very big fruits and the first fruits appearing on the third one.

Honza P

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Re: Citsuma Prague
« Reply #108 on: December 05, 2018, 12:18:39 PM »
 I can ask the citrus growers from university of Prague if they still have some plants. They dig out lots of old subtropical trees, old citrus trees are ok, but radically pruned.

Florian

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Re: Citsuma Prague
« Reply #109 on: December 06, 2018, 03:43:18 AM »
I can ask the citrus growers from university of Prague if they still have some plants. They dig out lots of old subtropical trees, old citrus trees are ok, but radically pruned.

It would certainly be interesting to see what gems they still have hidden somewhere.

Sylvain

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Re: Citsuma Prague
« Reply #110 on: December 11, 2018, 11:23:00 AM »
Snek,
> I've seen some of it in very old photos (50's or 60's). And it looked very convincing. E.g. orange, sometimes with trifoliate leaves.
If you know an equivalent chimera with orange please immediately take cuttings ( and send me some ;-) ).
Sorry, you probably meant Slva Mičurina, a chimera of PT and navel orange. I have it but I completely forgot. I found it to day, bearing an unripe fruit.  :)

Ilya11

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Re: Citsuma Prague
« Reply #111 on: December 11, 2018, 02:48:47 PM »
Slava Michurinu is pretty hardy, one year grafted plant kept some of its leaves after -9C.
The fruits look like that of the typical navel, but flavedo and  albedo have some very strange additional odor component.
In early December they are rather sour, sugars are of 9 Brix , taste is something between orange and lemon.
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                       Ilya

Honza P

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Re: Citsuma Prague
« Reply #112 on: January 28, 2019, 08:21:44 AM »




They have new greenhouse. This is in Prague, the origin place of this variety (ITSZ - ČZU)
« Last Edit: January 28, 2019, 01:48:55 PM by Honza P »

mikkel

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Re: Citsuma Prague
« Reply #113 on: January 28, 2019, 10:41:50 AM »
My Citsuma Prague took its first frost this winter. We had several nights with -6C at night and at daytime around 0C or slightly below.
The pot was partially frozen. Now there is no frost since some days.
the plant shows no damage. No leave loss so far.

Citradia

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Re: Citsuma Prague
« Reply #114 on: January 28, 2019, 07:27:26 PM »
Mikkel, do citranges tend to be hardy in pots there?  Id be afraid of the roots freezing too much in a pot especially if below freezing for three days.

Eclissato

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Re: Citsuma Prague
« Reply #115 on: January 29, 2019, 05:06:55 AM »
I have a question: the cold resistance of satsuma is -8C, so if the chimera goes to -12C what could happen? The sastuma cells wil dead and the next year the plant will become a poncirus?

Sylvain

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Re: Citsuma Prague
« Reply #116 on: January 29, 2019, 05:44:43 AM »
@Honza P,
On your pictures I see a pure Poncirus spout. Is it on the Prague or on the Citrange.

@mikkel,
> We had several nights with -6C at night.
-6C is just nothing for a Prague.  :D


> the cold resistance of satsuma is -8C, so if the chimera goes to -12C what could happen?
Nothing happens at -15C. This is my experience. Others have tested even lower without problems.

Citradia

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Re: Citsuma Prague
« Reply #117 on: January 29, 2019, 06:53:29 AM »
Ilya11, on your pic from 11/26/18, is that oleander behind your citsuma?

Ilya11

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Re: Citsuma Prague
« Reply #118 on: January 29, 2019, 09:41:01 AM »
I have a question: the cold resistance of satsuma is -8C, so if the chimera goes to -12C what could happen? The sastuma cells wil dead and the next year the plant will become a poncirus?
Winter resistance is a property of entire multicellular  plant organism, it only partially depends on component cells due to the  interaction between them and presence of common biochemical compounds in circulating sap.
That is why the periclinal chimeras are quite stable.
Best regards,
                       Ilya

Ilya11

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Re: Citsuma Prague
« Reply #119 on: January 29, 2019, 09:54:48 AM »
Ilya11, on your pic from 11/26/18, is that oleander behind your citsuma?
Yes, it is a cold resistant oleander, it is in ground for four years, some twigs were damaged last two seasons when we had arctic blasts for two weeks with night temperatures around -9C, but plants were  flowering in a summer and even gave some seeds.
Best regards,
                       Ilya

Citradia

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Re: Citsuma Prague
« Reply #120 on: January 29, 2019, 08:25:06 PM »
Thats amazing that you can grow oleander in France, Ilya!  I always thought France had very cold snowy winters. Im used to oleander only growing in coastal regions of the southeastern US, and know its too cold for them in our mountains. Ive learned that the Mediterranean coast of France is rather tropical and am amazed by that too since France is so much further north of North Carolina. Our different continental weather conditions, the effects of the gulf stream, etc, are truly amazing. The posts of the palms and citrus growing in Switzerland blow my mind too. Thanks for your informative posts and pics!

Ilya11

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Re: Citsuma Prague
« Reply #121 on: January 30, 2019, 04:09:21 AM »
The climate in Paris region  is very close to that of Seattle, but a little bit drier and more sunny. My garden has 30 years average of minimals of -9C, exactly in the middle of USDA  z8, while downtown Paris is now zone 9 due to the urban heat.
I have a dozen of palm species including 20 year old Jubea.
Best regards,
                       Ilya

mikkel

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Re: Citsuma Prague
« Reply #122 on: January 30, 2019, 12:48:17 PM »
Do you protect the palms escpecially the Jubaea?

Ilya11

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Re: Citsuma Prague
« Reply #123 on: January 30, 2019, 05:56:07 PM »
I protected Jubea from moist during its first 8 years, not now because it is too large. Occasionally the tip of a new spear is frozen, but the plant recovers rapidly. My Butia odorata was nearly destroyed in 2012 and 2017 but recovered last summer.
Best regards,
                       Ilya

 

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