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Messages - Zitrusgaertner

Pages: [1] 2
1
Cold Hardy Citrus / Re: Citsuma Prague
« on: April 28, 2018, 05:48:05 PM »
You have to feed the Prague very well if you are eager to get fruits  ;)

2
Cold Hardy Citrus / Re: Citsuma Prague
« on: April 26, 2018, 01:28:46 PM »
Snek, your Prague has kept ists leaves. Very interesting. Mine gets rid of them in autumn.

3
Cold Hardy Citrus / Report on winter 2017/18
« on: April 25, 2018, 06:22:30 PM »
Location Vienna/Austria Zone 7b
After a very mild period of tempertures mostly above 0C we had one week with minimum down to -15 and daytime temperatures below zero. During this week I protected my Citrumelo 5*, Ichangquat and PTXSunki with thick fleece. C. ichangensis IVIA got only some sunprotection and Chimera "Prague" stayed unprotected. Prague does not show any damage. It is now full of flowers. Citrus ichangensis lost 50% of its leaves but  nu further damage. Citrumelo 5* which is high crafted, has heavy cracks on the bark of the rootstock (PT!) and has lost all its leaves. It will lose wood aswell. Ichangquat is nearly dead, but PTXSunki has no damages. It lost all its leaves as it does nearly every year. I was a little bit frustrated because I thought high crafting would prevent frost-cracks on the bark but t oviously does not. Any ideas why not?

4
Cold Hardy Citrus / Re: Clemyuz 3-3, ten degree tangerine
« on: April 25, 2018, 06:01:23 PM »
Isn't there a second variety of the Clemyuz called 2-2?

5
Cold Hardy Citrus / Eremolemon
« on: April 04, 2018, 09:13:52 AM »
Dear Citrus-Connaisseurs, what is known about the cold hardiness of Eremocitrus glaucaXMeyer-Lemon? Fruit quality seems to be good and if it could withstand -10 or less it would be a candidate for my citrus project.

6
Cold Hardy Citrus / Re: Cold Hardry Grapefuit/Pommelos
« on: March 29, 2018, 03:51:47 AM »
SoCal2warm du you have Kunenbo? What about its hardiness? And do they come true from seed?

7
Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 27, 2018, 09:45:43 AM »
Interesting: "Swingle and Reece (1967) additionally noted that: "Citrandarins are much like citranges except that the mandarin orange parent greatly reduces the amount of bitter oil found in droplets inside the pulp-vesicles. In citranges this oil usually makes the fruit too bitter to eat." Thus Citrandarins should be preferred to Citranges?

8
Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 27, 2018, 02:35:22 AM »
Okay, we stick with PTXSunki  ;)

9
Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 26, 2018, 01:21:15 PM »
Thank you Samodelkin, your picture resembels very much my plant. Narrow, serrated leaves and thorny twigs. But there is also a differenve: Mine does not have trifoliate leaves at all. Somtimes bifoliate but no more trifoliate. No poncirin sounds very good. Bitter is not a problem if it tastes good.

10
Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 26, 2018, 09:58:40 AM »
I will ask Bernhard when we meet again in May. He sent me seeds and I grafted the seedling on PT 10 years ago I suppose. This winter it has lost all leaves at -14C but the wood is totally undamaged. Unprotected "Prag" aswell. And C. ichangensis IVIA lost 50% of its leaves and maybe some tips. It seems to be harder than Citrumelo 5* which lost every single leave. Ichangquat has a crack in its bark near ground and does not look very happy. I will have to high-craft it on PT. In your post, Ilya, the fruits of Ichangquat lookes very nice -do they taste as nice?

Best Regards
Robert

11
Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 26, 2018, 05:46:15 AM »
Okay, I try to find some pics. The leaves are the size of the ones of finger lime. Narrow (1cm) mostly monofoliate and max 4cm long. I am not quite sure if it war really PTXNin-Kat or maybe PTXSunki. For a long time I thought it was Sunki, but then I found an old note that said: Nin-Kat. I gave a scion to Ilya named "PTXSunki" but I am in doubt now.

12
Cold Hardy Citrus / Hybrid Nin-Kat-MandarinXPoncirus
« on: March 25, 2018, 02:32:07 PM »
Is there anybody out there who owns the Citrandarin PoncirusXNin-Kat-Mandarin? I keep it outdoors in ground and it is hardy at least down to -15C
It has not bloomed yet.

13
in some cases I have made the same observations: crafted C. ichangensis (marked as very hard, crafted on PT) died in its first winter surrounded by C. ichangensis IVIA seedlings that survived. And this winter a PT crafted on PT died because of frost-cracked bark. I need not say that all PT on their roots (even the ones in pots) survived. On the other hand I did not have any problems with scions high crafted on PT. The ones that died were young crafts or crafts just above ground.

14
Citrus General Discussion / Re: Kachai Lemon
« on: March 23, 2018, 02:13:30 PM »
Millet, these fruits don't look like lemons, they seem to be some kind of mandarins?

15
I think whatever you find in supermarkets is not worth cultivating. The most sought after Citrus in Europe is Yuzu and Fingerlime also Cedro and Buddha's Hand  ;)

16
Cold Hardy Citrus / Re: keraji mandarin
« on: March 20, 2018, 05:21:54 AM »
Moro, to which register does "245" refer? USDA-List? Is your plant in opern ground? Or is it potted?

Best Regards Robert

17
Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: March 16, 2018, 09:26:42 AM »
Ilya, are the genes identified that cause bitterness and resin in normal poncirus? If not, would it be possibel to find out if you compared the genome of normal poncirus and swamp lemon? Or do I think too simple? Do you plan to make crosses with swamp lemon?
Questions over questions -sorry. Maybe I am a little too enthusiastic about the possibilities.  ;)

Best Regards

18
Cold Hardy Citrus / Re: keraji mandarin
« on: March 16, 2018, 09:18:57 AM »
Moro, my Ichangquat has a quite big crack in its bark right above the craft union. The Ichangquat is the only one of my outdoor-citri that is not high-crafted.

19
Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: March 14, 2018, 04:28:25 PM »
Ilya, are there any crosses with swamp lemon? Is there a chance to get rid of bitterness and resin in F1-hybrids? And: do swamp lemon flowers smell?

Best Regards
Robert

20
Cold Hardy Citrus / Re: Flowers of Poncirus
« on: March 07, 2018, 05:04:52 AM »
Thank you! I read about this false infomation that often...  ;)

21
Cold Hardy Citrus / Flowers of Poncirus
« on: March 06, 2018, 04:57:07 PM »
Just one question to the experts: One can often read about the fragrance of PT-flowers but I have never come across sweet smelling flowers. What are your experiences? And one more question to the few that know or own Swamp Lemon: How about its flowers?

22
Cold Hardy Citrus / Re: Accuracy of cold hardiness temperatures?
« on: February 25, 2018, 09:45:03 AM »
Thank you, Ilya, you are a great source of knowledge   ;)

Best Regars
Robert

PS: my outdoor citri are gouin to be frost-tested these days  :-[

23
Cold Hardy Citrus / Re: Accuracy of cold hardiness temperatures?
« on: February 24, 2018, 04:18:04 PM »
Great informations, thank you Ilya. Very interesting. What do you know about origin (parentage) of PT? I found a remark that it may be a intergeneric hybrid between some Citrus and something else -but what would be likely? Another statement says it is within Citrus closest to C. reticulata and Fortunella. I collect information for a presentation about cold hardy citrus and citrus origin.

Regards Robert

24
Cold Hardy Citrus / Re: Accuracy of cold hardiness temperatures?
« on: February 23, 2018, 03:14:10 PM »
Thank you, Ilya. But monoembryonic seedlings does not necessarily mean aswell zygotic. Monoembryonic seed might aswell be nucellar too. As far as I know.

RR

25
Cold Hardy Citrus / Re: Accuracy of cold hardiness temperatures?
« on: February 23, 2018, 07:05:27 AM »
Ilya wrote,
"It is very common for the young seedlings of PT to keep green  leaves over the winter.
Moreover, in poncirus  nucellar seed formation  is not obligate. It depends on the season and variety, many of  seedlings are zygotic, giving plants different from the mother."

I am bewildered about this statement. How could PT build up a stable and quite homogenous population if there were a lot of zygotic upcome? I recently read in a scientific report that PT is likely to be an intergeneric hybrid not a genus of its own. That is why I assumed apomixis was the reason of its stability. Maybe I am totally wrong.

Regards Robert

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