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Author Topic: Kumquat x Poncirus  (Read 465 times)

Marcin

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Kumquat x Poncirus
« on: September 16, 2018, 08:41:36 AM »
Hi. I'd like to share my experiences on crossing kumquat with trifoliate orange.

I've heard many times that it's a really difficult cross to make, but I still wanted to try. So last year I've been making some pollinations.

Nagami kumquat x Flying dragon Poncirus
I used two different Nagami cultivars as the mother plants. Pollinated flowers set fruit easily, and seed set proved not bad. The seedlings germinated quickly, but soon some of them refused growing. Still, the rest is growing fine up till now and I hope they will stay like that. ;)


For comparison - standard Poncirus seedling on the left, Nagami x Poncirus on the right:


Reale mandarinquat x Flying dragon Poncirus
In this cross, fruit and seed set were also not bad, but most of the seedlings proved weak and generally aberrant. Some had strange, narrow leaves, and some were even monofoliate. Maybe these abnormalities are connected with the fact that Reale is triploid. Still, I think that with a bit of luck this cross is worth a try.


So to sum up, I think that crossing kumquat with the trifoliate orange is not such a bad idea. There's a good chance of getting a really cold hardy citrus with quite edible fruits.

What do you think? Have you tried making similar crosses? If yes, have you met any obstacles?

Florian

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Re: Kumquat x Poncirus
« Reply #1 on: September 16, 2018, 03:21:40 PM »
I have never tried this cross but I will follow your work with great interest! Thanks for sharing.

mikkel

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Re: Kumquat x Poncirus
« Reply #2 on: September 16, 2018, 04:33:00 PM »
Thanks for your report! Very interesting.
Could you please explain the other pictures on your photo account. There are many interesting pictures.

hardyvermont

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Re: Kumquat x Poncirus
« Reply #3 on: September 17, 2018, 09:28:31 AM »
It is good to hear that you have made these crosses successfully.  I crossed Meiwa with Poncirus without fruit set.  Meiwa has hundreds of tiny flowers, almost all of them never set fruit even under normal circumstances. 

SoCal2warm

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Re: Kumquat x Poncirus
« Reply #4 on: September 17, 2018, 09:35:31 AM »
You might get something even cold hardier on the second cross, that is, if you try to grow a seedling of the poncirus x kumquat hybrid. That would be due to possibility of recessive genes or weeding out a dominant gene that may be detrimental.
Unfortunately I would expect a poncirus x kumquat hybrid to be highly nucellar. You'd have to go through a lot of seeds to find a nucellar one, if there were any.

I've heard that kumquat x Satsuma can be pretty cold hardy, down 14 degrees F.

Kumquat is usually always zygotic, so you could always perform a second generation cross by using it as the fruit parent.
That is kumquat x (kumquat x poncirus)

Ilya11

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Re: Kumquat x Poncirus
« Reply #5 on: September 17, 2018, 11:51:38 AM »
Very interesting Marcin, please keep us updated on the growth of these seedlings.
Do you remember what was the embryo color of hybrid seeds- green or white?
Have you castrated the Nagami flowers? I noticed that when it is flowering alone there are virtually no seeds formed. That is why this summer I pollinated non-castrated Nagami with Swamp Lemon, we shall see if there will be some hybrids.
Best regards,
                       Ilya

Citradia

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Re: Kumquat x Poncirus
« Reply #6 on: September 17, 2018, 10:09:20 PM »
Maybe it will be similar to a citrangequat but with more poncyrus traits. 

Marcin

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Re: Kumquat x Poncirus
« Reply #7 on: September 18, 2018, 04:40:24 AM »
Thanks for all your answers.

Mikkel, I've added descriptions to the photos.

Hardyvermont, this could also mean cross incompatibility. I'll try to check that when my Meiwa flowers. Thanks for sharing your observation.

Ilya11, I think the seeds looked more white than typical kumquat seeds, but I haven't removed the seed coats so can't be sure. Yes, I have castrated the flowers.
Nagami - Swamp lemon hybrid sounds good! I hope the cross will succeed.


Ilya11

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Re: Kumquat x Poncirus
« Reply #8 on: September 18, 2018, 05:10:45 AM »
Thank you
Best regards,
                       Ilya

 

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