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Messages - Ilya11

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Cold Hardy Citrus / Re: Hamlin x Flying Dragon
« on: May 27, 2018, 03:52:56 AM »
It is probably another variety, since tetraploid somatic hybrid has only  trifoliate leaves

Cold Hardy Citrus / Re: Hamlin x Flying Dragon
« on: May 26, 2018, 12:48:13 PM »
I really do not know, most probably actual budwood is from Andi Voss plant.
In a literature there is description of tetraploid hybrid obtained by somatic cell hybridization.

Cold Hardy Citrus / Re: Hamlin x Flying Dragon
« on: May 26, 2018, 03:39:43 AM »
I have it, got the wood from Robert (Zitrusgaertner) in 2012. On own roots it is not enough resistant and grows rather slowly.
In 2013 I low grafted it on poncirus, it is in ground without protection since 2014, no winter  damage up to  now.
It comes probably from a free  pollinated immature seedling of initial hybrid , since only a small number of  leaves are trifoliate.

Approximately 1.5m high, but has not flowered yet.

I lost Ichangensis from B.Voss several years ago when winter was mild, followed by one night  of  -6C  in the beginning of April.
Another ichangensis (SRA241) in open ground, without protection; had some branch damage last two winters.
You should probably plant it in a shadow to minimize temperature fluctuations. 

It is certainly very hardy when fully resting.
The problem is that its threshold temperature for vegetation start is less than that for poncirus and its hybrids.
In climates with large  winter temperature variations it is damaged even before citranges.

Cold Hardy Citrus / Re: Poncirus Seedlings
« on: May 17, 2018, 05:50:52 PM »
Look more like  citrange.

The moment for the optimal pollination corresponds to appereance of sticky moisture on stigma.  It depends on variety and environmental conditions, but pollen  can be placed before the optimal time, actually  to achieve good fertilization it is better to pollinate the flower several times.

Cold Hardy Citrus / Re: moving and blocking
« on: May 02, 2018, 03:20:16 AM »
Thank you

Cold Hardy Citrus / Re: moving and blocking
« on: May 01, 2018, 02:26:47 PM »
Thank you, it is not for the first time that some posts are blocked

Cold Hardy Citrus / moving and blocking
« on: May 01, 2018, 10:33:55 AM »
I do not understand why you are blocking some posts or moving them elsewhere?
What is an idea behind moving a report on this year hardy citrus survival to the main Tropical Fruit Form?

Cold Hardy Citrus / Re: Report on winter 2017/18
« on: April 26, 2018, 05:45:12 AM »
And I forgot to mention the biggest surprise: unprotected Keraji (low poncirus graft, budwood from Tintori plant)-  no damage at all :o

Cold Hardy Citrus / Re: Report on winter 2017/18
« on: April 26, 2018, 05:31:52 AM »
Very unusual combination of weather conditions this winter. Two verymild periods interrupted by episode of heavy snow with -5C nights and another  week with -9C nights without daytime defrost (20 cm frozen ground)  with strong winds of 85 km/h.

Unprotected plants:
Thomasville- strong damage, most of leaves gone, small twigs are dead.
Citremon Voss- upper  late summer growth is dead, but plant is OK and pushing new growth
Morton- some leaf loss, but will flower soon
5* citrumelo- lost some  leaves on North Eastern side but heavily flowering now
Three meter high Yuzu ( low graft on poncirus)- no damage( it got severe stem cracks last winter)
Ichang Lemon Shangyuan- heavy bark cracks, most probably will die
Ichanquat- no damage
899J-  loss of upper branches, but is pushing a new growth
FDxHamlin (from Roberto) no damage
PTxSunki ( same source) no damage
High  grafted Prague- lost all its leaves, but strongly growing now
ichangensisxsinensis (Tintori via Mikkel)- last summer high stem poncirus graft, lost all leaves, but no twig damage, is growing now
Very big surprise- same age small graft of Slava Michurina (Orange/PT chimera?) undamaged old leaves, actively growing now. I got mother plant from Z.Cernoch in 2010, very  slow development in a pot
Hanayuzu- stem cracks, probably will die
Early St.Ann satsuma seedling -initially no damage, but probably will die because of stem cracks
Taichang seedling ( 2 meters high, no damage in past 6 years) all  small twigs are dead, no growth, probably most of the trunk will be lost
C.ichangensis SRA241- some twig damage, no growth yet
N2tri("Neuezuchtung" PTxichangensis hybrid of B.Voss)  no damage

One layer fleece cover on a surrounded cage frame:
Yubileiny (AsahikanxGrapefruitPernambuko)- dead
Taiwanika- no damage
Bloomsweet ( low stem poncirus graft, budwood from Sylvain- different from Voss plant)- no damage, but not yet growing
Another surprise- "Pseudo Yuko" from Z.Cernoch- plastic cone with open top protection, some twig loss, but one leaf is still green. This plant was desperately dwarf in a pot, I planted it in ground last spring, in November it gave three small yellow fruits  that look and tasted like real lemons.
Among my hybrids- lost many seedlings that were perfectly robust during past winters, but still have some  that are not damaged at all.

Cold Hardy Citrus / Re: Citsuma Prague
« on: April 26, 2018, 03:43:22 AM »
It looks like stamens are yellow and probably contain fertile pollen :o
Very uncommon for satsumas.

Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: April 25, 2018, 01:46:19 PM »
I guess you are right, hybrids  with poncirus and fortunella are more difficult to obtain than crosses between classic citruses.
The first barrier is the time of flowering: early for poncirus or late for kumquats. This of course can be overcome by pollen storage.
I also observed the influence of climatic conditions, with hot weather during flowering favoring  fecundation. I am doing hybridization under open ground conditions, most likely doing it in protected environment would help.
On a top of this, I believe that due to evolution distance these hybrids are more difficult to obtain. I read an article showing a high frequency of aneuploids ( chromosome number  abnormalities) in hybrids between Fortunella and citruses.
Use the bridging varieties like hybrid kumquats, citranges or citrumelos  could be a way to overcome this type of incompatibility. I found that Kucle kumquat hybrid is very easily pollinated by 5* citrumelo to produce interesting zygotic seedlings.       

Citrus General Discussion / Re: Pigmented hybrids from Italy.
« on: April 21, 2018, 04:42:07 AM »
Renamed because it is not really red?

A very misleading post, do not understand why you are mixing real scientific results with your unbased  prophetic revelations.

Cold Hardy Citrus / Re: Clemyuz 3-3, ten degree tangerine
« on: April 19, 2018, 07:56:33 AM »
No, it was a 5 years old seedling.

Cold Hardy Citrus / Re: Clemyuz 3-3, ten degree tangerine
« on: April 19, 2018, 03:09:33 AM »
Very slow growing plant, dead after -9C this winter.

Citrus General Discussion / Re: The Fragrance of Citrus in Bloom
« on: April 19, 2018, 03:07:32 AM »
Pollination  of Miaygawa by poncirus  in this case was used in order to identify and discard possible zygotic hybrids (trifoliates).

Citrus General Discussion / Re: The Fragrance of Citrus in Bloom
« on: April 18, 2018, 02:50:26 PM »
Okitsu comes from spontaneous  mutation event in Miaygawa genome. Mutated   nucellar seedlings is the quickest way to produce new satsuma  cultivars

Cold Hardy Citrus / Re: Eremolemon
« on: April 04, 2018, 01:10:20 PM »
Sebastien( Alias)  tested it in a pot and reported -14C as a limit:
Coachella eremoleon R-14°c maturité:oct-dec qualité: XXXX
For eremorange in the ground he reports a similiar limit:
Eremocitrus sinensis T R-15°c maturité: qualité: XXXXX

My grafted eremorange in pot culture in Paris region has occasional branch damage due to wet conditions in autumn.
No fruits up to now.

Cold Hardy Citrus / Re: Cold Hardry Grapefuit/Pommelos
« on: March 30, 2018, 02:38:25 PM »
DNA marker analysis identified four different types of Kunenbo.
It is Kunenbo-A that is ubiquitous parent of hardy Japanese citruses.

Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 26, 2018, 01:34:08 PM »
Actually 5* flowers even after  loosing all leaves. This winter we had only two nights of minus 9 but with violent winds up to 80 km/hour, also  periods with snow and abrupt changes of temperature. No damage on Ichangquat, but 5* lost leaves on North Eastern side of a tree.
Fruits of Ichangquat  are rather special, but I like them, they are not particularly soar, grapefruit like bitterness and if eaten fully ripe with a skin, the taste resembles fejoa with some pine note.

Alexander (Samodelkin), leaves on your PTxSunki look exactly like on my plant

Cold Hardy Citrus / Re: Hybrid Nin-Kat-MandarinXPoncirus
« on: March 26, 2018, 08:02:38 AM »
Yes, I got it from you under the name PTxSunki😊
Grafted on poncirus, it is very resistant,  not so on its own roots. It is now 2m tall,hope will flower soon. The leaves of the spring growth are narrow and fall in the autumn, while those of the second,summer flush are wider and keep green during the winter. Both are mostly monofoliate.

Cold Hardy Citrus / Re: keraji mandarin
« on: March 21, 2018, 01:23:09 PM »
In the same DNA marker  paper it is shown that Kabuchi and Unzoki are hybrids of Kunenbo-A  and unknown citrus with cytoplasm coming from sweet orange, while Keraji is a back cross of Kabuchi to Kunenbo-A

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