Author: Luigi Guarino

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Grapes of concord

Grape breeders in the US are making hybrids between Vitis labrusca, a species native to the eastern US best known for the Concord variety, and Vitis vinifera, the European grape, in an effort to get the best of both worlds:

By putting in up to 28,000 seedlings yearly, however, Mr. Cain said he hopes to find marketable varieties, maybe from vines planted last year. He also wants varieties that look distinctive, like elongated grapes, to let consumers know they’re something special. “Combining Eastern and Western grapes in California is like bringing some of the best musicians in the world together on the stage,” Mr. Clark said. “Now let’s see what they’re going to play.”

Offhand, I can’t think of another example of an important crop with easily crossable congeneric species endemic to the Old and New Worlds, as is the case with Vitis. But I could be wrong…

LATER: What an idiot, there’s cotton, strawberry, lupins…

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Enclavism

This has very little to do with agrobiodiversity, but I couldn’t resist mentioning it. I got an email from my friend Robert Hijmans at IRRI pointing me to this little-known fact:

West Bengal has many small exclaves within the Rajshahi division of Bangladesh, and vice versa. According to Brendan Whyte’s thesis, there are 106 of them. For the height of complexity, a part of Dahala Khagrabari, India is surrounded by Bangladeshi territory (part of Upanchowki Bhajni, Bangladesh), which is itself surrounded by Balapara Khagrabari, India, which in turn is surrounded by Bangladesh. This is the world’s only counter-counter-enclave.

Robert and his team are trying to map this in GADM, not without a little difficulty. GADM is part of the BioGeoMancer project, about which I blogged way back.

GADM is a database of the location of the world’s administrative areas (boundaries). Administrative areas in this database are countries and lower level subdivisions such as provinces, departments, bibhag, bundeslander, daerah istimewa, fivondronana, krong, landsvæðun, opština, sous-préfectures, counties, and thana. GADM describes where these administrative areas are (the “spatial features”), and for each area it provides some attributes, foremost being the name and variant names.