The Tropical Fruit Forum

I guess most clementines are totally zygotic.

Ilya11,  How soon do your Thomasville seedlings start blooming for their first time?  Also how tall at that point?

I have done it several times, the strongest seedlings managed to flower in three years, they were approximately 2 m tall.

At least theoretically,  the inbreeding depression would manifest  less if you  cross F1 with another citrus type ( e.g. Citrange Xgrapefruit or Xmandarin)

Do you have many snails/slugs? I have seen something similar on my citrumelo two years ago.

Skandiberg,
I am not sure that is is easy to produce polyploids with gibberillic acid.
There is another substance that is widely used to this : herbicide oryzalin.

Winged petioles are quite unusual for lemon seedlings, but pigmented new growth is their characteristic pattern

Nucellar seeds in satsumas are induced by foreign pollen. In Japan many early ripening varieties were produced by pollinating satsumas with poncirus.
They, like tetraploids arise from somatic mutations in nucellus cells.
Poncirus pollen was used in order to be able to discard  the hybrids by leaf morphology.
You can get a corresponding pdf by search with "CITRUS BREEDING AND BUD SELECTION IN JAPAN"  and getting it from Florida Oneline journals. For some reasons it can not be accesed  by a direct link.

If they were kind enough to take the trouble to answer you, why not to ask for polyembryonic seeds of this tetraploid arising from crosspollinating?

"Moreover, seeds of the tetraploid Satsuma mandarin were polyembryonic."

Another possibility is that someone else will obtain fruits of these citrumquats faster, growing them in a warmer zone or in a greenhouse. Then I'd be interested in getting the seeds.

Hello Marcin,
It would be a shame to lose  this Maroon surviver.
If you send me its budwood at the end of February, I'll be able to graft it onto the vigorous citrumelo rootstock in my garden in the South of France.
With some luck it would flower in in 2-3 years.

This autumn I was also surprised  to find that the fruits that I forgot to harvest last year were still hanging on the tree. They increased in size, lost all the bitterness and were quite sweet and puffy. They survived several nights with -9C last winter.
Potentially a good variety for 9a-8b zones in the regions with cool  summers.

Chandler pomelo has a triploid set of chromosomes (that's what makes it "seedless").

Entirely false. Chandler is diploid and give many seeds when cross pollinated with compatible pollen.



Image from https://citrusvariety.ucr.edu/crc3244

My Z82 flowered for the first time this year. It refused to flower for years , the budwood was from Mikkel.






Probably the best citrumelo that I tasted, juicy, early ripening ( beginning of November), some bitterness, but not exceeding, good balance sour/sugar 13°Brix, outside some poncirus smell, but no smell at all in juice, no internal sticky oils.
Interestingly, on Eisenhut nursery description it mentioned that "according to an old list it could be cv. Sacaton R.W. Hudson"

1. Kinga (but it was overripe)
2. Poncirus2Plus
3.PoncirusPlus
4. FD
5.SwampLemon
6. Hodonin
7. Voss