The Tropical Fruit Forum

At one point I thought he is a bot, compiling, mixing and pasting all information possible.
But now I know he is real, just trying to be greater than he is.

Quote from: Ilya11 on September 20, 2019, 03:35:08 AM

Ichang lemon is Pomelo x Yuzu hybrid

As far as I am aware, it has not been determined with certainty whether it's a Pomelo x ichangensis, or Pomelo x Yuzu hybrid.

At least in the DNA marker studies I have looked at, Yuzu shares a close enough DNA marker profile to ichangensis that it was not possible for them to determine or differentiate in this case.
I'm not saying it would be impossible to determine, I'm just saying I'm not aware of a specific study that revealed which of those two the parent was, and was more specific.

I guess you are aware of such a data obtained with most up to date methods, but prefer to live in your pseudo scientific prophetic beliefs  I posted the link to this publication many times in connection with your fake statements. Here it is one time more:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0166969

"Swingle considered Ichang lemon (C. wilsonii Tanaka) to be a hybrid of C. ichangensis and C. maxima [11]. In contrast, Tanaka regarded it
as an indigenous variety related to yuzu, and classified both C. ichangensis and C. wilsonii to
subgenus Eucitrus [12]. Their inferred parentage in this study confirm that C. wilsonii is an offspring of yuzu as Tanaka stated [12]. However, there is no evidence to suggest kinship of C.
ichangensis and yuzu, and direct parentage of C. ichangensis and C. wilsonii are consequently
refuted. Their cytotypes also suggest no direct kinship between them (Table 15, Fig ."

I agree, peat moss is not very good in semi dry conditions.
In Europe we have a cheep compost made by industrial processing of pine bark, it is excellent for improvement of water retention in sandy soils.

Robert,

My plant is in the ground, no protection.  It  starts to grow rather late in a season.

Yes, it has a pleasant smell  and very good balance of sugar/acidity, not at all "Japan acid citrus"

Kikaijima is in zone 11b where keraji is found.

I wonder how far north it is found in Japan.

Keraji is very resistant, in my garden it has not dropped a single leaf in two winters with -9C nights and snow.

This paper has a Summary in English

Interestingly, you citation on cpDNA parentage is exactly what is written in DNA marker paper. No contradiction at all.
Old morphological classification of Japanese varieties was made by T.Tanaka who already  pointed on the difference between Keraji and Kabuchi:

"The typical Keraji was found in two places in Okinawa, the first from Izumi,
Motobu-chO, and the other from Nago. Since they are handled as Kabuchii, it seems
probable that Okinawa peple are not familia rwith the mainland Keraji, neglecting
its presence in Okinawa. True Keraji should be segregated out from Kabuchii as
they are quite distinct"

Further Revision of Ryukyu Citrus : Revisio Aurantiacearum XIV
Tyozaburo TANAKA Bull.Univ.Osaka Pref. Ser.B. Vol.11 1961

It has been my experience that Thomasville does not come true from seed. There are too many factors in the parentage. You get a mixture of different leaves, fruit and cold hardiness from seed. You might get close but an exact clone of Thomasville is hard to come by.

My experience is very different.  I germinated several hundreds  Thomasville seeds, not a single one gave a plant with different appearance/hardiness, although some, as many kumquats have root problems.
Even these seedlings, when grafted on hardy rootstock are non distinguishable from Thomasville parent.

Looks like Thomasville.

Viruses like citrus tristeza could also be a problem, more grafts you add , higher is a chance that one of the buds is infected and bring a disease to the whole tree.

I do not think that such deep conclusion can be drawn by 7 seedlings mentioned by Socal2warm.
I have some extremely rapidly growing both F2 as well as F1 poncirus hybrids. One such seedling reached 2 meters high in two years and was not damaged by -9C freeze.