In Italy, the most common Tangelo cultivar is the "Mapo" (Avana mandarin
x Duncan grapefruit).
Do someone of you know it? And do you think it is suitable for container growing?
I planted a seed and it is sprouting right now

Ivan, tangelos are excellent citrus. Growing a seedling to fruit in a container however will take a very long time if it is even possible.

There is a variegated Honeybell here in the states & a variegated Mapo in Europe. I would try to track down a grafted variegated Mapo if I were you.

I'll keep your suggestion into account
For the moment, I'll just have fun watching this little guy grow

Do you have tangelos in ground?

I do, Ivann. I have a Page mandarin, which is really not a mandarin, but a Cementine mandarin x Minneola tangelo cross (which actually makes it 3/4 mandarin, 1/4 grapefruit.) I also have a Wekiwa tangelolo (yes, you read that right, a cross between a Sampson Tangelo and an unspecified grapefruit, which makes it a tangelolo.) The Page is one of my more vigorous trees, and it's on a semi-dwarfing rootstock. The Wekiwa will grow quite tall, again, even on semi-dwarfing rootstock (both are probably on Carrizo trifoliate hybrid rootstock.) Having grapefruit in their backgrounds makes them more vigorous, especially if grown on their own roots

Thanks for your reply Hoosier! lol, Tangelolo sounds really interesting!
As you said, the fact that Tangelo has some genes from grapefruit was one of my worries in trying to grow it in a container. It won't probably be a big success, but let's see what happens - nature has always some surprises for curious people

Wekiwa... looks like an interesting variety! A pink tangelo!

http://users.kymp.net/citruspages/mandarinhybrids.html#wekiwa

If you are worried about the grapefruit parentage there is no need. It is really no problem to grow a 100% grapefruit in a container. I have long grown a Star Ruby grapefruit in a 10 gallon air root pruning container. Due to the fact that the tree's root system is contained with in the limited space of a container keeps the tree at a most reasonable size. It produces fruit fine. - Millet

It is, Marc! The other name for this citrus cultivar here in the USA is Lavender Gem, due to it's lavender tint to the flesh in certain parts of the country. Here on the West coast, it doesn't turn lavender. It is seen more on the East coast. I absolutely love this fruit, it is delicious. To me, it tastes like a sweet orange with a hint of mandarin, then with a grapefruit aftertaste. But, I think its quality can be very different, depending upon its growing conditions, as Dr. Manners really dislikes this fruit. We have a local wholesale grower here in N. San Diego county, Clausen's Nursery, that used to grow them commercially. Since changing their business many years ago from a commercial orchard company, to growing trees commercially, they kept several of their orchard trees for budwood and grafting, and they use their old Wekiwa trees. I really think that they have a slightly different cultivar than Wekiwas sold elswhere. I'm going to make sure I do a taste test at UCR Citrus Variety Collection to see if the Clausen Wekiwa tastes and looks different that what they have growing at UC Riverside. I'm not positive, but I have my suspicions. In any event, my Wekiwa is one of my top 5 favorite citrus in my garden This is my young Wekiwa. It really struggled at first, as it was one of several trees that were affected by Phytophthora, but it is now recovering nicely. I've left a couple of fruit on it, which I should probably pull off, but I love the fruit so much, I've kept just a few. This cultivar tends to be a bit leggy, so I've had to keep it loosely staked. I'm going to have to re-stake a bit better to support the fruit it has, as it sets fruit like a grapefruit, in clusters at the ends of the branches:

Lavender? Must be pink lavender then... otherwise the fruit should have a purple color!

Well, I think it is probably one of those "in the eye of the beholder" thing I think it looks pinkish, too, but someone tagged it as lavender years ago, and hence the name has stuck. We call it "Wikewa", and it is mispronounced out here on the West coast according to Dr. Manners. You'll hear it pronounced here as "WICK-e-wa", which to me makes it sound like it's from Hawaii! Apparently, according to Dr. Manners, it is someone's last name, and is pronounced, "Wi-KEE-va". From what I've been able to determine, it is the name of an area in Florida, and its origin is murky. Some say its a Seminole Indian word for "spring" (as in a pool of water), other historians say no. So, whatever it's called, it is tops in my book.

Good to know, Millet. I have been vacillating about putting a liner-size Bloomsweet grapefruit in a container, since I know it's on Carrizo. I thought my first one was a goner, so I ordered a second one from Rolling River. While waiting for it to arrive, I went back up and took a look at the original one I bought, and shockingly, it was starting to come back from near death. So, now the one in the ground is growing, albeit tiny still, but it's going to make it. So, I have two, now. Just didn't want to go through the angst of watching a rather special and rare variety for us here in California go through the death nells, again, so was opting for a container. It's going in today. Here's the one in the ground. I wished I had taken a "before" photo, but truly, it was just a stick. No leaves, and the top of the last branch was starting to die. I pruned the dead part out, and fertilized it, then gave it up for dead. Boy was I surprised. As much as I kvetched about our very long, hot summer, it was a lifesaver for my citrus affected by Phytophthora, as most fungal diseases can't tolerate really high temps. I wll say, though, this variety is much loved by Citrus Leafminer. Even though this tree was treated, thosed damned moths still got to this tree, and my poor little new Bloomsweet, which I forgot to treat, was completely affected, every single leaf. It looks all gnarled, and twisted. Damn CLM.

Honkeytonkey !!!

A Mandarine in pink or even lavender ???

Wanna get !!!!

Then I looked for pics and found just yellow and orange pulp :
http://www.citrusvariety.ucr.edu/citrus/wekiwa.html

... with the hint, that in ideal conditions it CAN BE also pink ...

Like that Marc posted :

http://users.kymp.net/citruspages/wekiwa-tamu.jpg

I believe this variety is polyembryonic, but Millet, Laaz, can you confirm?

To be honest, I was quite intrigued with this Mapo Tangelo that I bought a couple of seeds. Thought it could useful in making homemade alcoholic drinks. At least that's what the fruit is mostly used for (juicing purposes), if not mistaken. Too bad it was spoiled when it arrived here