1
Cold Hardy Citrus / Re: IchangensisXSinensis from B.Voss
« on: April 02, 2024, 05:26:55 PM »
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2
Cold Hardy Citrus / Re: Southern Frost navel orange
« on: April 02, 2024, 01:28:49 PM »
Thank you. Are they completely seedless?
3
Cold Hardy Citrus / Re: Fall harvest sour orange ?
« on: April 02, 2024, 01:26:28 PM »
Many streets of Spanish town Seville are planted with sour orange, mostly seedlings. Some time ago I was there in November and collected the seeds. I have now two trees that give colored fruits in the beginning of December. They are planted in the zone 9b garden in the South of France.
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Cold Hardy Citrus / Re: Fall harvest sour orange ?
« on: April 02, 2024, 03:25:20 AM »Just to be clear, I think K-Early is actually classed as a tangelo. However, a friend who tried some described the flavor more like sour orange. I've never eaten one.
that's not my neighbor
If you're specifically looking for a sour orange variety that reliably matures before fall, you might consider trying different varieties or cultivars that are known for their earlier fruiting and ripening habits.
Another GPT bot suggestion
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Cold Hardy Citrus / Re: Southern Frost navel orange
« on: April 02, 2024, 03:20:32 AM »Does anyone know more about this plant's background?What do you think of their other Frosts? Do you have them?
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/
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Cold Hardy Citrus / Re: IchangensisXSinensis from B.Voss
« on: April 01, 2024, 11:57:10 AM »
They are monoebryonic and since the seedlings are very different in appearance are also zygotic.
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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.
After first signs of germination you can transfer them in trays at ambient temperature.
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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?
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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.
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Cold Hardy Citrus / Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« on: February 16, 2024, 05:09:33 PM »
A little bit surprising to see a bifoliate seedling in this cross.
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Cold Hardy Citrus / Re: Origin of Yuzu, ichang lemon, sudachi and where does its resistance to cold come
« on: February 09, 2024, 10:55:36 AM »12
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.Sylvain,
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.
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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.
15
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.
16
Cold Hardy Citrus / Re: Heterozygosity and zygotic breeding lines
« on: January 23, 2024, 11:29:55 AM »
Till,
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
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
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Cold Hardy Citrus / Re: Let's create a new cold-resistant citrus tree!! "Steps and path to take"
« on: January 23, 2024, 11:21:45 AM »
Lauta_hibrid,
I wonder why in the balmy zone 9b climate of Buenos Aires you care for producing hybrids with poncirus?
I wonder why in the balmy zone 9b climate of Buenos Aires you care for producing hybrids with poncirus?
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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"
link
"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"
link
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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.
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.
20
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.
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.
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Cold Hardy Citrus / Re: How to create a new fruit? - My hybridization project in Argentina.
« on: January 09, 2024, 07:39:12 AM »
Welcome to the forum, do you already have the fruits of these hybrids?
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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.
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.
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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)
https://www.youtube.com/watch?v=OmvSheROGS4
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:
https://www.agrumes-passion.com/viewtopic.php?t=5027&sid=0bc24ca43b1fb9d69352b3f0b6d9e2f0
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. "
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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.
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.
25
Cold Hardy Citrus / Re: US-1279 and SuperSour 2, new and better zygotic parents for cold hardy breeding?
« on: December 30, 2023, 09:01:27 AM »
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.