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Messages - Sylvain

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Citrus General Discussion / Re: Hybrid Seedling Cotyledons
« on: Today at 05:04:30 AM »
> You can also distinguish seedlings  by the appearance of leaves clockwise or counter clockwise
I too thought about that. I noticed that the sense of rotation is acquired for ever and follows the graft, but among seedlings you can find  clockwise and anticlockwise. So it looks more like  a congenital trait than a hereditary trait.
Indeed it would be fascinating to find a population made of uniquely one sense of rotation or a plant that have changed it's sense of rotation!

Citrus General Discussion / Re: Hybrid Seedling Cotyledons
« on: February 17, 2018, 08:24:34 AM »
The leaves you are talking about are called primordial leaves. In citrus they mostly are opposite but some time alternate.
Just to use the right words.  ;)

Cold Hardy Citrus / Re: Citsuma Prague
« on: February 14, 2018, 06:53:00 AM »
Indeed you can use any of my pictures.
I look for yours but as they were on, they are lost.
The only one I found is this one:

Cold Hardy Citrus / Re: Swamp Lemon Adventure!
« on: February 13, 2018, 06:37:28 AM »
> it seems to be much less cold hardy, I suppose.
No, it is not.

Citrus General Discussion / Re: ID this citrus, please
« on: February 12, 2018, 03:46:14 AM »
It is Assam lemon (Citrus longilimon).

Cold Hardy Citrus / Re: US 80-5 citrumelo
« on: February 11, 2018, 07:11:55 AM »
What more information do you have and where?

Cold Hardy Citrus / Re: Citsuma Prague
« on: January 13, 2018, 05:50:09 AM »
Let's say for Christmas.
This year I picked them the first days of the new year but many people would feel them overripe, very sweet with low acidity.

Cold Hardy Citrus / Re: Citsuma Prague
« on: January 12, 2018, 09:32:04 AM »
> does this mean that seedlings that you showed were from monoembryonic seeds with white cotyledons?
No, not at all. The seedlings I grow all come from one seed, the only one I had in many years. I Think the cotyledons were green but the main thing is that the seed looked like a "normal" citrus seed, like a lemon seed. The ones of this year are very different. They are big and puffy and we can see the green cotyledons through the testa. It makes bumps on the seeds making me think they are polyembryonic but I still didn't open one. They exactly look like yuko seeds that are very polyembryonic.
The 'work' of these days is to eat the fruits and collect the seeds. Later I shall take pictures.

> Hybrid (Unshiu x P. ITSZ Prague“ is the greatest mystery among citruses for me.
It will remain like this as long as you shall consider Prague chimera like a(n) Hybrid.
When you will think of a chimera, everything will become clear and even evident.

> I've seen some of it in very old photos (50's or 60's). And it looked very convincing. E.g. orange, sometimes with trifoliate leaves.
If you know an equivalent chimera with orange please immediately take cuttings ( and send me some ;-) ).

> When cutting the screws, the second genome remained on the original plant. Is it even possible? If so, could it happen to the hybrid (Unshiu X P.T.) ITSZ Praha? If it's a chimera.
I am not sure to understand this sentence but if you mean "is it possible to obtain a pure mandarine fruit from a(n) hybrid of poncirus", the answer is absolutely 'NO' for an hybrid and absolutely 'YES' for a chimera!

It is the same for a pure trifoliate branch, the answer is absolutely 'NO' for an hybrid and absolutely 'YES' for a chimera!

It is the same for monofoliate polyembryonic seedlings and for everything we can see on the prague. It is always NO for a hybrid and always YES for a chimera.

Cold Hardy Citrus / Re: Citsuma Prague
« on: January 11, 2018, 06:34:42 AM »
Last news. In the crop of this year most of the fruits are flatten at the distal end, like satsumas. The fruits of previous years were near-spherical. I find from 0 to 3 seeds per fruit. The seeds are also different. They are big and we can see trough the thin testa the green cotyledons. They look poly embryonic.
The pulpe is still the same: a pure mandarine.

Cold Hardy Citrus / Re: keraji mandarin
« on: December 23, 2017, 05:04:58 AM »
> From what I know precocious flowering gene in poncirus is recessive
> I agree with you about those recessive genes, Walt.
I received them as seeds and all the seedling flowered  one and half year later.
But it doesn't prove it is not recessive because all the seeds could be nucellare.

Cold Hardy Citrus / Re: Growing rare cold-hardy hybrid
« on: December 20, 2017, 06:54:12 AM »
>  So far this cold-hardy hybrid doesn't really have an official name.
It is MIC. Not so rare...  :)

Citrus General Discussion / Re: Cleaned Up Cara Cara
« on: December 02, 2017, 07:58:02 AM »
Is your cat low biuret guaranteed?  ;D

Well, I don't think it is very accurate but it doesn't matter much.

Any way it is not a question of copyrights but of fairplay and courtoisy to ask him before we release the back up.

Millet, I think the "" proposal is just a teasing joke.

Citrus General Discussion / Re: Lights????
« on: November 28, 2017, 07:50:15 AM »
> I've also found, that in actual practice, the type of light source doesn't seem to make much difference.

> But blue light, especially the light from a CFL, is more prone to cause leaf burn at higher light intensities.
I use a 300W CFL and the plants grow until they touch the tube without any burn.

The fan club of the Citrus Growers forum succeeded to gather six static backups of the forum. We intend to publish one on the internet. It is a very hard work and before we start we want the permission from Laaz.
Laaz, please just say yes. We shall take care of everything and not bother you.

All the people who want to save all that accumulated knowledge must say it now and help in our fight!.

Sylvain, for the CG fan club. ;-)

Cold Hardy Citrus / Re: Yuzu... my new obsession!
« on: November 24, 2017, 04:34:34 AM »
Your yuzus have less seeds?
What do you mean? The pictures are from a yuko (I corrected the typo), not from a yuzu.
My yuzus are hon yuzus (the common yuzu) and have many seeds but I don't care because the main interest of yuzus is the zest.

Cold Hardy Citrus / Re: Yuzu... my new obsession!
« on: November 22, 2017, 10:02:28 AM »
> The seedless Yuzu or Nishiki (tada) is extremely hard to find outside of Japan - as are the true Yuko.
In France, in private collections,  you can find everything you want.
A yuko in my garden:

> Thanks for the pictures. What excatly is the Sitsuma?

> It is a kind of citrandarin ( poncirus x satsuma hybrid).
It seems on the picture that it is trifoliate. So it might be the US poncirus x satsuma hybrid.
No relation with the Czech poncirus x satsuma chimera.

Citrus General Discussion / Re: What can it be?
« on: November 18, 2017, 12:55:22 PM »
Yes, Botrytis cinerea.

They are not on the web.
I shall publish mine as soon Laaz permits.

The old forum is completely gone even the archives.  Nothing left at all.
No, it is not true. There are several backup. We are waiting for Laaz to give us the permission to publish them.

Citrus General Discussion / Re: ID of a citrus tree grown from seed
« on: October 08, 2017, 04:48:00 AM »
> That does not look like grapefruit or pomelo. Looks like some sort of Citron???
Not at all. The leaves of citrons are not articulated!

Citrus General Discussion / Re: Limon Rosso
« on: September 05, 2017, 06:02:49 AM »
Limon rosso is a nice fruit to look at but this is its only use. You cannot eat any part of that fruit, it is very bad.
Mine was very nice but (as Millet would say) it finished on the compost pile.  ;)

Citrus General Discussion / Re: ID of a citrus tree grown from seed
« on: September 02, 2017, 05:23:40 PM »
You are right the petiole has very large wings, that's why I wrote 'make me think of'. I meant I was not sure...

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