The Tropical Fruit Forum

After one day of research, in "Breeding For Ornamentals: Classical and Molecular Approaches" I found:

Fruit juice is L1.

Could you give your sources. Please.

In "The citrus  industry" I found few lines going in that way, but it's old (1968):

In Japan, two citrus forms considered to be synthetic periclinal chimeras have been in existence for some fifty years (Samura and Nakahara, 1928; Takahashi, 1962).   The Kobayashi Mikan is recorded as having arisen at the junction where a satsuma scion was grafted onto Natsudaidai.   This scion was accidently [sic] broken off at its base, after which two adventitious buds emerged, one of which grew into the original chimeral tree.   This chimera produces fruit with rind like Natsudaidai, but with flesh like satsuma.   It is seedy, and seedlings from one fruit were reported to be Natsudaidai (Dr. Yuishiro Tanaka, unpublished).   In this chimera, histogenic Layer II appears to be genetically Natsudaidai, while Layer I should be satsuma.

and

It appears that a mutant color factor is present in the Thompson in histogenic Layer I; this layer provides at least part of the cells of the juice vesicles

If it is confirmed we could be in presence of MMP as you say.

It means that among the roots adventices we might find many PMP and few MMP. Just the same as if the origin is PMP, because the L1 is dropped off.
In the first hypothesis (PMP) the majority should be identical to the origin and in the second  hypothesis (MMP) the majority should be different from the origin.

The suspense is unbearable!... 

And indeed if the truth is "It seems that the shoots are made of L2 or L3." we shall obtain many poncirus and few mandarines...

+1

Tomorrow I shall start rooting many  cuttings...

Done.

If I am right we might obtain a copy PMP or a very near form MMP (without thorns!).
The MMP could be less cold hardy than PMP.
I don't know from which layer the new L1 is created...

From https://www.ncbi.nlm.nih.gov/pmc/articles/PMC160199/pdf/041089.pdf It seems that the shoots are made of L2 or L3.
It means we should obtain MMM and PPP.
No MMP without thorns. 

Prague is a chimera of a large flowers poncirus (because I saw it) and a mandarin. The kind of mandarin is not known. We speculate that it is a satsuma because it was found in Prague and the fruits are seedless but the rind doesn't easily separate from the pulp (at least it is not so easy as for satsuma).

We can go farther. It is a periclinal chimera because of the leaves patern and a high stability.
The tree is thorny when poncirus are and mandarins are not. This character is carried by the first layer L1. It means the first layer is from Poncirus L1=P.
The fruit is pure mandarin and the leave margin is evergreen, it means the second layer is mandarin: L2=M.
The leaves center changes in autumn which means L3 is poncirus: L3=P.
So it seems that the periclinal chimerism is of the PMP type.

> Is oryzaline less dangerous?
Yes much less dangerous but don't drink it. ;-)

> It seems the thing to look for in the leaf is not more, but less stomata per area and larger guard cells, when compared to normal diploid leaves...
Yes, that's right.

You can find flowers all over the warm seasons but main flowers times are spring (one month after poncirus) and now.
Fruits of the first bloom will be ripe before the first freezes but the ones of the second bloom will have to be protected.

At this time of the year, the fruits of the first bloom are marble size.

But first take out the grass at the bottom of the plant!
It takes all the nitrogen  of your fertilizer.

> I don`t want to overestimate this but I feel a bit offended. Do I get you wrong
Yes completely wrong.

Where did you ask me? On a forum or by mail?
I cannot speak freely on this forum. I have already been censored.
It's why my answers are so short and abstruse.
It is better if you contact me by mail.

Quote from: Sylvain on May 30, 2017, 05:16:56 PM

Mikkel,

> He suggested the use of C.wintersii/M.papuana as a substitute for C.wakonai even if it is of hybrid offspring. With selfing/inbreeding one could stabilize the precocious trait and go then for hybrids with other Citrus.
What arguments Malcom S. gave to prefer C. wintersi to C. wakonai?

Simply. It is not available.

It depends for who.

The theory of nodes count is just a fake news. 

Radoslav, the one we have is not the Chimere no.19. On our plants the leaves are smaller than the fruits and the fruits are spherical not depressed at the apex.
And yes, it looks like flying dragon. For years mine behaved like this. It is only since two years that it started to grow upright.
Voss, Brosa, Snek, Ilya and I have the same plant. On the pictures there is no doubt.

Could you take a picture of the one witch still remains in the greenhouse in university of Prague? This way I could tell you if it's the same plant than the one we have.