Citrus Growers Forum

ilyaC · Posted: Sun 16 Dec, 2012 11:51 am

Never saw this on my Prague citsuma ( 7 years in the open ground).

_________________
Best regards,
Ilya

Sylvain · Posted: Sun 16 Dec, 2012 5:18 pm

Go and see now. At this time of the year it is not rare to see it. At least on few leaves.

jm · Posted: Wed 19 Dec, 2012 4:34 am

Mine is like this too, I thought it was because a lack of nutrients. Embarassed

Sanguinello · Gest

Roberto · Posted: Fri 21 Dec, 2012 9:00 pm

There is a rumour that Citsuma "Prague" is in fact a creation of Iwan Wladimirowitsch Mitschurin (have a look at Wikipedia). It seems to be true that this hybrid origins in the Soviet Union.
I do not think that Citsuma "Prague" is a chimera. Otherwise it would not withstand -15°C. All "Satsuma"-parts would die I suppose.

Sylvain · Posted: Sat 22 Dec, 2012 5:47 am

That is exactly what happened last year where we had -15°C.
All the leaves have fallen.

Radoslav · Posted: Sat 22 Dec, 2012 6:03 am

Roberto wrote:

There is a rumour that Citsuma "Prague" is in fact a creation of Iwan Wladimirowitsch Mitschurin (have a look at Wikipedia). It seems to be true that this hybrid origins in the Soviet Union.
.

Can you please, post link from wikipedia? There are lot of nonsense rumours around, for example, rumour written by Ilya on french forum, that russian citruses come to Czech collections massively during the destruction of Soviet union. In fact, many of those citruses were collected personaly by the Czech citrus growers like Mr. Kotoucek or Mr. Urban (author of citrus hybrid SP Urban) within more than 60 years, during their visits in Suchumi, Sotchy, Gagra, Batumi and many other places in former Soviet Union. For example, some where collected in 1956. Also, some where sent directly by famous russian gardener Zorin from Sotchi to Czechoslovakia, because of very good ties with those czech citrus growers.

Radoslav · Posted: Sat 22 Dec, 2012 6:06 am

Sylvain wrote:

That is exactly what happened last year where we had -15°C.
All the leaves have fallen.

I think, that only way how to obtain really hardy citrus is by chimera - You need plant, where tissue responsible for vital functions will be from poncirus and tissue of fruit from some edible species.

citrange · Posted: Sat 22 Dec, 2012 7:54 am

Quote:

You need plant, where tissue responsible for vital functions will be from poncirus and tissue of fruit from some edible species.

Trouble is I don't think that's how chimera's work. All the chimeras I've seen have their tissues so mixed up that you don't get a fruit composed just of one variety.

ilyaC · Posted: Sat 22 Dec, 2012 9:26 am

Radoslav wrote:

There are lot of nonsense rumours around, for exmple, rumour written by Ilya on french forum, that russian citruses come to Czech collections massively during the destruction of Soviet union. In fact, many of those citruses were collected personaly by the Czech citrus growers like Mr. Kotoucek or Mr. Urban (author of citrus hybrid SP Urban) within more than 60 years, during their visits in Suchumi, Sotchy, Gagra, Batumi and many other places in former Soviet Union. For example, some where collected in 1956. Also, some where sent directly by famous russian gardener Zorin from Sotchi to Czechoslovakia, because of very good ties with those czech citrus growers.

Radoslav,
Sorry that you misunderstood what I wrote on Agrumes-Passion forum.
Clearly, there have been and always are the strong links between citrus enthusiasts of the two countries.
I was writing in the context of misidentified citrus Yuko that many of us in France got from Czech and Slovak sources and is traced back to Yuko from Sotchi. The Yuko that is cultivated in Russia is completely different and resembles the almost relict Yuko of Japan.
I wonder if you know that late professor Zorin kept many rare varieties bred during Soviet period in his personal collection during 90th when glass houses of the Institute of subtropical gardening were almost demolished. In this period he sent budwood to a lot of people that helped to save these varieties from the extinction.

_________________
Best regards,
Ilya

Radoslav · Posted: Sat 22 Dec, 2012 10:11 am

Ilya, if you are interested of that part of history (citruses in former USSR), you can contact Mr. Urban directly. I think, he is 82 years old now. He prefers communication by letters - no by Internet.
His postal address is here:
http://www.citrusy-karel.estranky.cz/clanky/kontakt.html

Mr. Urban
author of rootstock variety "SP Urban"

source: http://www.citrusy-karel.estranky.cz/

ilyaC · Posted: Sat 22 Dec, 2012 11:12 am

Radoslav wrote:

Ilya, if you are interested of that part of history (citruses in former USSR), you can contact Mr. Urban directly. I think, he is 82 years old now. He prefers communication by letters - no by Internet.
His postal address is here:
http://www.citrusy-karel.estranky.cz/clanky/kontakt.html

Thank you Radoslav,
He is a great man and does have a great collection, I certainly should write to him. I am surprised that he got Citrus juko (Yuko ?) from Italy.
Does he understand German or Russian? I understand Czech but can not write it.

_________________
Best regards,
Ilya

Radoslav · Posted: Sat 22 Dec, 2012 11:43 am

I do not know, why he mentioned Italy - It is from Sotchi, as far as I know.
I think, you can use russian.
I think, that he sold most of his collection in two previous years - He said, that he is too old, to take care for a such big collection, but all of his cultivars can be found in another collections.

Esmark78 · Posted: Sat 22 Dec, 2012 1:24 pm

what a fantastic guy. Would like to see the collection

Terry · Posted: Sat 22 Dec, 2012 1:32 pm

I thank you for sharing this information. The picture of Mr. Urban is great plus.