The Tropical Fruit Forum

Till,
Sac vesicles of my  C.ichangensis IVIA358 fruit are elongated and are softer compare to those of fingerlime.
 

My Dunstan (from Andy Voss seed) is probably  100 % nucellar ( seedlings look like identical).
Till, the first leaves on the stem of your F1 seedlings, are they arranged in alternate ( like those of poncirus)  or opposite way?

Was 5 star or Keraji the female parent for that cross?

5star

Excellent, Ilya clear difference in appearance, are you going to test for Zygotic embryony?

Yes, I will for new hybrids, 123260 is zygotic.

This autumn I am able to compare fruits from four siblings of my 5starXC.Ichangensis cross of 2012 (Ichangstars)
First flowers of 123270:

This plant has the largest leaves , grow upright and is particularly strong.

123252 has been abundantly flowering already to three years,

 but only now was able to keep one fruit till maturity.
The plant has a spreading growth and is only partly evergreen, most leaves disappear late December.

Another variety: 123202 had first flower and one  fruit last year. Now it is bearing few dozens of fully ripe fruits.

My first hybrid of this series 123260 (Ichangstar60)  bear the  fruits every season since 2019, I have chosen the largest of its fruits for comparison:


The fruit of 123270 was fully ripe by the middle of October, it dropped to ground today, that of 123252 has still some green taint, the rest are fully colored but still are attached to the branches.


All fruits do not have any poncirus aftertaste nor internal oils, the most aromatic is 123202, followed by 123252 and 123260, they have different fragrance notes. But 123270 has only a very weak scent. Its taste is the best, very juicy soft fruit, almost no bitterness, acid like lemon, 10°Brix, weight 80g.
Fruit of 123202 is also soft and contains a lot of juice, but it is rather bitter and very acidic.
All these plants were in ground since 2012, non protected and never had any winter damage.

I wonder if you tried to grow pure  poncirus seedlings as a control for your general agricultural capacities?

Do you think that monofoliates have a better chance to bring edible progeny, even if they are less hardy?
I have some monofoliates in 5SxDunstan and 5Sx(AfricanShaddokXPT) populations and their leaves are less bitter and more aromatic than for the rest.

Yes, it was a pollen source. Young 20 cm seedling resisted -8C 6 hours artificial freezing without leaf damage.

Probably also abundant fruit set, lack of  bitter taste, early ripening.
And most important is the combination of all this in one variety.
It seems that all these features are polygenic and not dominant.
I have a hardy population of about a hundred seedlings from 5starXDunstan cross.
Only two of them have non bitter taste in their leaves.

For crossing purposes does it behave like a diploidor tetraploid?

Probably as a tetraploid, as the juice sacs are of the same layer as embryos.

With sufficient protection you can probably cultivate mango at your place.

Yes, these flowers have plenty of pollen , also some are fully developed with pistil that is rather unusual for the first flowering of FFPT. Out of 6 seedlings 4 has flowers and possibly one fruit has been formed.
In the past I failed to produce hybrids with this strain that are also  fast flowering.
Even FDXFFPT with  straight thorns that should be definitely  zygotic are not flowering early.

9 month old FF PT
Sidlings are ~10 cm high .