Can someone identify this grape vine?

Hello,

About two years ago I did a trial planting of a vine here in South-East Madagascar, and it performed quite well.

The issue is that I don’t know exactly which species it is.

Would anyone be able to help identify it if I share some photos?

Thank you in advance for your help.

Looks like a grapevine to me!

Maybe Vitis labrusca, the fox grape, or a hybrid such as Concord grape? Or the common Vitis vinifera? I do not know my different grapes particularly well but have seen a few different kinds.

Yes, not easy to know M Ljin! I thought of a kind of "muscat" grape, but I am amazed by its growth in 2 years, especially in Madagascar!!!
I'll check out the species you mention

Alix,

Have you seen/tasted any grapes yet?
Please provide an image of a leaf, aiming the camera perpendiculary to the leaf. A few such images may help in identification as they will present the average shape.

Hello Cristobal,

Nope, never seen nor tasted,

Here are the pictures I've got.

Alix,

I'm sorry for delayed reply.
The leaf shape does not resemble anything I grow: seven different muscats and few wine varietals.
The leaves resemble Vitis californica and also my St George rootstock, so it's telling me that there is a chance that your grape may be something that got "reverted' to its ancestral gene pool - either a rootstock that took over the scion or a seedling. Most grape rootstock will not produce anything edible. Grapevine this large should already have some fruits. If it does not produce something within a year I would consider chopping it and grafting with a known varietal - easier say than do as I'm 100% unsuccessful in field grafting in my climate.