The Tropical Fruit Forum

I called it Morton_nucellar because it was one of   nucellar seedlings of my original Morton, not because it was different in this respect ( zygotic/nucellar).
It probably came from somatic cell mutation in nucellus.

Probably, the main reason was the temporal isolation of poncirus from other citrus species (the so-called allochronic isolation). The flowering of poncirus occurs about a month earlier. Although there should have been overlaps from time to time, especially with remontant varieties. There must have been some other human factors.

Under wet and hot conditions poncirus is making several flushes and flower up to three times a season.

As for Bernhard Voß, I think we can all relate. Nothing remains of his cooperation and enthusiasm for citrus. I don't even know if he's still involved in this area. I must also say that some of the things he wrote in literature and online were very optimistic, and there were disappointments because the frost resistance didn't turn out to be as good as claimed, and on top of that, the plants were much smaller than their parent plants. His focus these days is tree care, including everything that goes with it, and it seems that there's a lot more money to be made with that than with citrus, especially since citrus, albeit more standard varieties, are now available in any larger garden center and nursery, and sometimes even in supermarkets, in attractive sizes and at reasonable prices. Unfortunately, he can't or won't say anything more about botanically interesting and important things from his past active years, things he should still know, or things he should still have information about...

Usirius,
I guess you are too tough on him. Bernhardt nursery  played an enormous role in reviving an interest in hardy citruses in Europe.
Personally, I'm very grateful to him for introducing me to this fantastic realm. Met him personally few times, bought my initial collection at the turn of  the century as well as his excellent book on hardy citrus.
Still communicate by messager, he has been very responsive.
His interest now is more in new prune hybrids, probably more pragmatic than citruses at 53N of Hamburg.

Most of the function in plants as well as other living organisms are polygenic, that is that they are determined by cumulative action of several genes. We do not know how many genes of these suppressors  exist and if they are clustered in one region or spread over different chromosomes. Elimination them will require different Fx generations.

New shoots in PTxichangensis cross are colored, the same in some of my 5starxYuzu seedlings

So an F1 hybrid should also be blood?

Moro, Tarocco and Chinese blood oranges are heterozygous, that is they contain only one chromosome with active gene, another is defective like in common oranges.
Half of their F1 hybrids will possess active gene.

It is not the same gene, there are mutations in the regulatory element, that permit the anthocyanin development specifically in  fruits, but not in spring shoots.
link

The data that shown does not give the standard deviation, just one result per sample. It seems to me that this method is not able to determine the difference between genomes of these varieties. It will be very instructive to see if there will be two peaks for the  mixture of Rangpur and Finger Lime samples.

Yellow Ball = HarukaXKiyomi
https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE10668727

Citrus seedlings, even nucellar clones of thornless varieties,  are often have them. Their size and the number are gradually reduced.

It was described in the case of triploid seedlings.
There is also an article pointing to about 30% of triploids among orangeXPT crosses.

@Lauta do you know if herbalistics is on FB or has any other kind of web presence beside Insta?

https://herbalistics.com.au/new-australian-fingerlime-hybrid/