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Messages - tedburn

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Citrus General Discussion / Re: Grafting pomello on lemon
« on: Today at 03:00:32 AM »
Hello, I tried this about two weks ago, so I can' t tell you a final result, but up to now the grafts are green.
I grafted Chandler and Satsuma on an elder well growing lemon. Best regards Frank

Cold Hardy Citrus / Re: tetraploid seedlings or plants - how to recognize
« on: February 21, 2021, 02:46:54 AM »
Thanks all for your informations. Read just about Colchicine and as you wrote it can do good and bad depending on dosage, time and usecase.
But when is it used to cause Tetraploidie ? Giving it to plants while building fruits, that then the seeds build tetraploid chromosomes ?
Best regards Frank

Hello Ilya,
how do you go on with your 3 very frost hardy hybrids, do you graft them on a mature plant to get early fruits ?
Have you already done this ?
Sorry for the curiousity, but this is a very interesting project ?
Best regards Frank

Citrus General Discussion / Re: Grafting on 6 week old seedlings possible ?
« on: February 13, 2021, 05:59:26 PM »
Hello Poncirusguy, yes this is is about the same size than mine. I will still add an update picture

50% success, after 10 days the Dunstan/FD graft is growing, as expected the Star ruby/FD graft failed.
But very early grafting is possible though difficult. As it seems there is nearly no lack of growing as if grafting older plants. Regards Frank

nice tree, how frosthardy is this satsuma variety ?
Best regards Frank

Cold Hardy Citrus / Re: New Jersey Yuzu Growers
« on: January 31, 2021, 02:54:25 PM »
very nice and interesting  :)

Til, this was also the thickness of my seedling trunks about 2 mm. If thy take I will post pictures. Good summarize of you to grafting conditions.

Yes Millet I' ve seen on you tube, but this is still more complicated and needs special technics and tools.

I tried it just now in cleft grafting, I took a Star Ruby and a Dunstan seedling on flying dragon each. The size of the seedlings was  between 3 and 4 inches. But it was difficult because the plants have been in trayers with other plants and the trunks are still very smooth. Dunstan was still easier than Star Ruby.
Other difficulty was to fix and get pressure at the grafting point, also with the smoth trunks.
So I have done it and will see the next days if they dry out or stay green. So wether it works or not It was a new experience. The reasons for the grafting have been that the seedlings are in good groth and the hope to have in spring already graftet plants for getting bigger plants in autumn. But in ever case next grafting will be done with older seedlings 😅.

Citrus General Discussion / Grafting on 6 week old seedlings possible ?
« on: January 30, 2021, 02:24:16 AM »
I have a lot of different 4-6 week old citrus seedlings and they are growing nice. So I thought if in this age grafting heals faster. The more difficult handling due to the only 8 to 10 cm high seedlings would be the price. If my theory of faster healing is true.
I will try it the next days. But if everyone has experience, it would be interesting to hear about ?
Best regards Frank

Cold Hardy Citrus / Re: tetraploid seedlings or plants - how to recognize
« on: January 24, 2021, 02:25:18 PM »
Thank you Ooli for your informations. In the first look I didn' t find much in the forum, but so I will still have a more intensive look. For the first I' m still not trying breeding citrus, first I still have to gather more informations. But I think citrus breeding is a very very interesting topic, so I will see which flowering citrus I will get in spring/ summer and then looking if something is possible. But I think the practical doing also
needs some experience, so lets see.

Cold Hardy Citrus / tetraploid seedlings or plants - how to recognize
« on: January 24, 2021, 04:10:54 AM »
I read a few articles about some advantages of tetraploid citrus, but I couldn' t find out yet, how I can recognize if a seedling or a plant has tetraploid genetic.
Are there citrus species which are as default tetraploid or are there exterial signs e.g. as leaveshape, smell or other exterial attributes ?
Very interested to learn more about ;).

Thank you millet, so I hope my seedlngs will be safe 😀

Hello from Germany, I' m just storing and eating a few star ruby grapefruits from Florida. They are quite good and I enjoy them. Due to loving citrus plants I also germinated some seeds of them and have a few nice sprouts. But I also asked me the question if I could get HLB over the fruits or over the seeds. I treated the seeds a while in Chinosol and peeled them before planting them, but I don' t know if this would help if there would be a potential risk of infection with HLB or would it either be a too cold climate in Germany for HLB in zone 7 ( 8 in few regions) ? Does everyone know ?
best regards Frank

Cold Hardy Citrus / Re: Changsha mandarin opinions
« on: January 18, 2021, 02:42:53 PM »
@Kumin, thank you very much for the two links, they are very much what I looked for 👍👍

Cold Hardy Citrus / Re: Changsha mandarin opinions
« on: January 18, 2021, 03:06:20 AM »
Hello Kumin,
nice post which expresses a lot of the difficult but interesting and complex sides of hybridization work. I'm in regard to citrus cultivation at beginner stage but enjoy it very much, so next spring/ summer I expect some more of my citrus varieties flowering and I will also try some small hybridizations with the plants in my citrus yard. What I don' t really know is which citrus varieties are mono-/ polyembryonic, nucellar or zygotic or steril/pollensteril.
All attributes one should know before thinking of doing hybridization. Could you or other experts in the forum show me a link, where the citrus varieties are described concerning their relevant attributes concerning hybridazation ?
This would be very interesting and helpful if such a description exists.
Thanks and best regards Frank

Cold Hardy Citrus / Re: F2 citrange winter hardiness trial
« on: January 01, 2021, 12:17:44 PM »
Hello Kumin, wish you a very good and healthy 2021 and further very good progress and success in your ambitioned breeding program.
I always like to read your interesting reports and view your pics.Best regards Frank 👍

Thank you Ilya, seems to be a very good quick selection program 👍👍. Next interesting step will be fruit quality and fruit size, but think this will need still some years.
Thanks for sharing your very interesting breeding results.

that sounds already promising Ilya, did you as Reference to the stress level also pack some Dunstan or other citrumelo seedlings in the fridge to see how they managed in comparison on this stress level ? I guess you did  ;).
I think citrus breeding is realy super interesting due to its complexity 😅

Cold Hardy Citrus / Re: 17-11 pummelo x citrumelo hybride
« on: December 29, 2020, 04:41:37 AM »
Very interesting, thank you Socal and Ilya.
Does anyone know, what has happened with this 17-11 pummelo x citrumelo hybride, due to the fact that this article is wrutten 1998, is this cultivar bred further are the further characteristica like fruit quality good !

thanks for your interesting post SoCal, you try already, what I thought could be done, but yes it is also in this combination still a long way. I whish you very good success.
For me also if I couldn' t perhaps plant such a cross without protection in ground in z7, it also could be charming, to leave the plant for example 50 weeks a year on the veranda of the house with small protection ind if there is 1 or 2 week cold spell, bring it only for this time in the greenhouse or garage.
How big/old are your bloomsweet and Dunstan ?

Do we know what happened to this interesting hybrid?
I has not be able to find any further information on it.
In  leaf freeze resistance tests it was shown to have a similiar or even better hardiness than US119.

I think this is an interesting question, if it should be possible to cross a quite cold hardy pomelo like e.g.bloomsweet with an very coldhardy citrumelo/Citrange like 5*, Dunstan or  Morton, to get better and bigger fruit than Citrange/citrumelo and perhaps little less cold hardiness - did you meanwhile get an answer Ilya ? Anyone else or is someone already working at this subject ?
best regards Frank

Found an article that dogs if trained are capable to detect HLB, whatever this can help to early detect the disease. Sorry, its in german, but google or other translator should help 😉

Cold Hardy Citrus / Re: Kabosu
« on: December 22, 2020, 02:31:17 PM »
Thanks, very interesting topic and very good explanation. So Kaboshu, if similar cold hardy to yuzu could also be a good choice for middle Europe. But I'm currently not sure if Kaboshu is sold in Europe. At least it is not widespread.

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