This is the fast flowering Trifoliata. It has flowered from the first year & stayed small compared to all my other trifoliata. This is one Ned gave me a few years back.

This one looks great.

It still have no name?
From the origin and the title of this thread why not "Ned's fast PT"?
Sylvain.

That would be up to Ned. Rahn's trifoliata?

So it flowers in one year from seed and is naturally dwarfing? Awesome!

Sounds like a good rootstock and hybrid parent.

Yes, and Ned said all the offspring have done the same.

A great plant! Is there a way to get it to Europe, even to Mainz ?

Seed when they are ready.

Oh, that would be great.

Laaz kindly sent me some seeds a year ago, to test in my slow-growing climate.
No sign of any flowers yet.

Is it flowering several times in the season?
A similar mutation has been isolated in 1976 in China.
http://treephys.oxfordjournals.org/content/28/10/1449.full.pdf+html

I found some info related to Ilya's post above about early flowering Poncirus.

Here's an excerpt from an article on developing HLB resistant citrus that mentions the early flowering gene in the context of their research:

Quote:

Several approaches are being studied to reduce the time between generations in citrus breeding to as little as one to two years, permitting rapid introgression of traits from distant relatives into commercial citrus types. This may be critical for conventional breeding to produce high levels of HLB resistance in the next 20 years. An early flowering gene (FT) has been identified and sequenced in several plant genera, including Citrus (Endo et al., 2005). Based on studies with other woody perennials, over-expression of the FT gene should result in citrus plants that flower within a year of seed germination. An early flowering P. trifoliata has been reported in China, with enhanced expression of FT and alterations in several other flowering genes (Zhang et al., 2009), and efforts are being made to identify similar mutants at USHRL. Purely horticultural manipulations also show promise in producing citrus hybrids which flower just a few years after initial seed germination (Gmitter and Grosser, personal com.).

Could Laaz's fast Poncirus trifloiata tree have this gene? Also, I wonder if this tree could be of use to the research at the USDA/ARS in Fort Pierce, Florida? It sounds like they are (or were) looking for mutants with this trait.
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Here is the full article:
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&ved=0CFcQFjAG&url=http%3A%2F%2Fwww.calcitrusquality.org%2Fwp-content%2Fuploads%2F2009%2F05%2FStover-Breeding-for-HLB-resistance.pdf&ei=dkqfUaavGua-0gGKxYH4DQ&usg=AFQjCNGWZsS-MtP0qJPC2NxrvXe27s-7Kg[/quote]

I got one seedling from Sylavain this spring, but it was very weak to grow, developed a strange rot just above the roots and died.
Never seen this in my ponciruses, but could be due to particularly wet and cold spring this year.