Citrus > Cold Hardy Citrus
Long term cold hardy citrus breeding project
sc4001992:
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Ilya11:
Eventually these branches will die, but if the rootstock is vigorous and still growing you will probably have this curiosity for some time.
sc4001992:
Ok, I'll see how long it lasts before it drys up and die. My lemon tree has similar branches and it has survived on the same tree for over 5yrs.
bussone:
Interesting articles in combo:
https://pubmed.ncbi.nlm.nih.gov/36905139/
https://www.researchgate.net/figure/Pedigrees-of-Citrus-and-hybrids-including-P-trifoliata-in-their-pedigree-Those-having_fig1_347769166
https://irrec.ifas.ufl.edu/media/irrecifasufledu/docs/pdf/citrus-show/Progress-in-the-USDA-Scion-Breeding-Program.pdf
If I chain these together, I think my takeaway is that poncirus x duncan descendants have potential if crossed with Ambersweet. (I think 1-7-38 has duncan x poncirus in its ancestry)
The surprise may be crossing poncirus with nakon pomelo.
Florida tests, so no idea of cold tolerance.
mikkel:
SunDragon which has US119 in its pedigree is supposed to be HLB tolerant. It is fully edible.
just an idea about US119 if (only if) Duncan is heterozygotic for the acidless genes like in Siamese Sweet (although it isn`t offspring of Siamese Sweet) it would be likely to think that the combination of this Citrumelo hybrid with the acidless Succari Orange can led to a sweet US119.
(I know that the acid-free genes in pomelos are different from the acid-free genes in oranges, but as an abstract (simplified sweet / non sweet), it's a good idea of how backcrossing could lead to better hybrids).
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