Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Ilya11

Pages: [1] 2 3 ... 38
Cold Hardy Citrus / Re: F2 Citrandarin (X-639) winter hardiness trial
« on: February 28, 2024, 05:18:13 PM »
You do not need many heating mats if you pre germinate seeds in Zip locked plastic bags with barely moist perlite.
After first signs of germination you can transfer them in trays at ambient temperature.

Cold Hardy Citrus / Re: F2 Citrandarin (X-639) winter hardiness trial
« on: February 21, 2024, 02:29:52 PM »
Kumin, have you seen the grafs of the roots or just the difficulty in seedligs separation?

Citrus General Discussion / Re: Leaf cuttings citrus propagation
« on: February 18, 2024, 09:52:12 AM »
Since citrus root cuttings  are able to give new plants, I do not see a reason why rooted leaf cuttings are not able to do it.

A little bit surprising to see a bifoliate seedling in this cross.

It was shown here (corrected):


Citrus General Discussion / Re: Kumquat x Buddha's Hand
« on: January 31, 2024, 10:31:51 AM »
> You probably know that there are no hybrids with citrons as a seed parent.
You mean in the wild... Because it is easy  to do for humans.  :)
This is to prouve  and confirm. I actually tried it with Corsican and failed up to now.
Moreover, we are talking about plants made by humans,  although maybe  inadvertently.

Citrus General Discussion / Re: Kumquat x Buddha's Hand
« on: January 30, 2024, 12:58:00 PM »

Citrus General Discussion / Re: Kumquat x Buddha's Hand
« on: January 30, 2024, 03:32:07 AM »
I have already made several Buddha's hand hybrids: pollinating: rampurg lime, Genoa lemon, eutis limequat and this year I am forming fruit with Nagami kumquat, meiwa and ninpo Orangequat.  We'll see what I get.  I have the hypothesis that C. medica flower quickly (I made etrog from seed, several seedlings and they flowered in 4 years).  So maybe I'll have a surprise in a while.  photos: 1st etrog flowering, 2nd and 3rd limequat x buddha's hand.

You probably know that there are no hybrids with citrons as a seed parent.
They are shedding  pollen long before the flower opening.

Citrus General Discussion / Re: Growing Sour Orange Tree in Florida
« on: January 26, 2024, 03:47:20 AM »
May be it is not true soar orange, but Poncirus trifoliata or some of its hybrids. They are tolerant to greening.

Cold Hardy Citrus / Re: Heterozygosity and zygotic breeding lines
« on: January 23, 2024, 11:29:55 AM »
There is a paper on quantitative trait hardiness where they used PoncirusXpomelo population with some seedlings able to withstand -15C. So it is worth to test outside PTXSucrena

I wonder why in the balmy zone 9b climate of Buenos Aires you care for producing hybrids with poncirus?

Citrus General Discussion / Re: Amoa 8 Blood Mandarin…woah!
« on: January 22, 2024, 03:55:10 AM »
Could be because  other regulator genes (bHLH) from poncirus required for anthocyane synthesis do not functionally match MYB factors from blood orange.

"It has been observed that there is
a requirement for the presence of a suitable bHLH partner to
achieve full functionality in the heterologous system"


Cold Hardy Citrus / Re: Heterozygosity and zygotic breeding lines
« on: January 20, 2024, 04:44:33 AM »
Till, I do not see a reason why green embryos in your YuzuXDunstan come from Dunstan.
Both its parents have white embryos, while Yuzu is supposed to be an ancient hybrid of some kind of ichangensis (white embryos)  and mandarine (green embryos).
In self pollinated  Yuzu I have occasionally seen the seeds with salad color.

Cold Hardy Citrus / Re: First fruits of Citrumelo 5star x Morton cross
« on: January 14, 2024, 04:32:47 AM »
For me its origin  is still a little bit confusing.
After looking in my archive and exchanges with Bernhard it is most probably Voss1 hybrid of ChandlerXPT.
He still has its other sibling - ChandlerTri, it is now monofoliate and has fruited for the first time last year.

Welcome to the forum, do you already have the fruits of these hybrids?

Cold Hardy Citrus / Re: My citrus collection [EU - Antwerp]
« on: January 02, 2024, 04:09:04 AM »
For me, in this video the color is rather yellow, not orange.
I had this variety in the past, lost it in the winter with  -10C low. When tasted  in December, fruits were partly green, small, rather acid, some slight bitterness.
In the video  they taste fruits in Vessieres nursery situated in 9B zone close to Perpignan, that could explain the difference.

Cold Hardy Citrus / Re: My citrus collection [EU - Antwerp]
« on: January 01, 2024, 05:04:59 AM »
Hi peep, hi all

Peep, I think that what you are doing with your citrus collection (gathering infos, images and now scanning leaves) is really great. It will surely be very helpfull. 

About yuzu n°30 here is what I've heard:

A couple planted about 250 yuzu seeds in France in a field.
They selected the more cold résistant years after years.
A few are now famous : n° 1, 3 and 30...

It is explained in a youtube video (in french) called "ils cultivent des agrumes résistants au froid "

In the same vidéo they also said that yuzu n30, is called "yuzu"30 because it is from a yuzu seed but that is actually not a "real" yuzu taste. It is more like a mandarin and yuzu mix. They still say it is a very good fruit.

Hope that helps! Cheeers

I add the link of the video (if it worked)
explenation on yuzu n°30 around 19'30seconds.

Actually this video is rather misleading, N30 has nothing to do with Yuzu clonal selection by Sebastian (alias) and Bernard,
Alias presented this hybrid on AgrumesPassion forum some time ago:
Google translation:
"This new hybrid would be the cross between a juno citrus and a mandarin, obtained in Montenegro (Bar).
Mandarin may be a satsuma (for taste) or a mandarin geleking (for the shape of the fruit).
The skin is lumpy and ribbed orange-coloured. The fruit is about 6 to 7 cm in diameter.
The pulp is orange, acidic and sweet reminiscent of mandarin satsuma a little but with a very pronounced acidity.
This citrus is given as cold-resistant, but to date no tests below -10 degrees Celsius have been carried out. "

Cold Hardy Citrus / Re: PT-plusXValentine cross
« on: December 30, 2023, 10:51:17 AM »
As an acclimatation step I  expose pots to outside conditions for two weeks during February and March. Usually average temperatures in this period  change from 8 to 12°C. 
In temperature  controlled freezer the pots with seedlings are kept at 0°C overnight, -4.5°C for 3 hours and -8°C for four hours. Then the are left with power off overnight. In 6 hours the soil temperature of pots  reaches 0°C. 

For me the bigest problem is the persistent bitter taste. It seems that for hybrids that still have internal oils, just keeping the juice in the freezer is able to get rid of it. Probably these compounds are more soluble in the oil and concentrate in the bottom layer. This is not a case for fruits without oils.

Cold Hardy Citrus / Re: PT-plusXValentine cross
« on: December 30, 2023, 08:52:33 AM »
I shall probably select by forced freezing of -8C at the 15 cm stem stage, like I do for the rest of my hybrids.

Cold Hardy Citrus / Re: PT-plusXValentine cross
« on: December 29, 2023, 05:01:42 AM »
Sorry for the mistake.
Valentine contains only the gene of anthocyanine pigmentation coming from Ruby orange ancestor.
The other type of pigmentation due to the presence of lycopene is absent.

Citrus General Discussion / Re: Seedless clementine seeds
« on: December 10, 2023, 10:50:22 AM »
As far as I know it is Clemenrubi

Citrus General Discussion / Re: Uga Changsha fruit already in stores...
« on: December 10, 2023, 04:02:50 AM »
Is it completely seedless?

Cold Hardy Citrus / Re: F2 citrange winter hardiness trial
« on: December 10, 2023, 03:56:35 AM »
If its flower buds are formed in the autumn and  protected by scales like those of poncirus it could nevertheless flower in the spring.

are Dunstan friuts better than 5 Star-fruits? And do you know #82 from Eisenhut aswell?

Best Regards

I have 82, but it has not flowered yet.
I am able to compare 5star and Dunstan because I have both of them on own roots growing close together. 5star was also harvested  last week but some of its fruits still had some green specks.

Fruit smells good but different from that of Dunstan. The proportion of juice is also less and you need more pressure  to extract it.

It is more sour, less bitter with 12°Brix. No poncirus aftertaste at this stage.
In the past I noticed that fruits of 5star can be kept for several months in the basement at ~12C and improuve their quality without drying. At the end of March there is almost no bitterness.
Fruits of Dunstan are drying more rapidly and start to rot by the Christmas time. I also noticed that 5star juice bitter taste is due to the presence of small pieces of  membranes, it can be totally eliminated by keeping  in refrigerator for  a few days. These pieces form a bitter bottom layer.

Pages: [1] 2 3 ... 38