Rescuing the American chestnut

You know, these Nibbles (the short, soundbite-type things which appear at the top of the right sidebar of this page) are fun to do, but sometimes you end up downplaying, or over-simplifying, an important, interesting — and interestingly complex — story. Take what I said about the American chestnut a few days ago. The recent history of Castanea dentata is proud and tragic ((Looking further back, it also played an important role in native America agroforestry.)), and efforts to bring it back from the brink of annihilation well-nigh heroic. To imply, as I did, that these efforts were confined to hybridizing the American with the Chinese chestnut was justified only by the necessity for extreme brevity. In fact, of course, it is not just hybridization but repeated back-crossing. And not just interspecific crossing but also painstaking crossing among the few remaining pure American chestnuts, as reported in the article that prompted me to revisit the original story and hopefully make amends for my earlier flippancy.

Summer-grass winter-worm

We went to the opening of a new exhibit at the Bioparco di Roma called Bioversitalia last night. The exhibit was fine, although as usual agricultural biodiversity got short-changed a bit, and so was the food on offer. The introductory talk, however, was a thorough disappointment. Not at all inspiring. What the boffins on display should have talked about, perhaps, is things like Cordyceps sinensis, aka དབྱར་རྩྭ་དགུན་འབུ་, aka the “summer-grass winter-worm.”

The summer-grass winter-worm is a parasitic fungus from Tibet which attacks and takes over the bodies of moth larvae living in the soil. Livestock really like to eat the resulting worm-like mummies, which are also used in traditional medicine. They’re a really valuable commodity: what alerted me to their existence was a newspaper piece today about a fatal gun battle that exploded when neighbouring villages clashed over access to this resource.

Now, it is stories such as this one of the medicinal moth-mummifying fungus of Tibet that would really have got people excited in the Bioparco last night about the wonder and importance of biodiversity!

Kava makeover

Kava (a drink made from the roots of Piper methysticum) has a bad rep in some quarters. When I was in the South Pacific I blogged about it several times, and even did a little photo essay about it. It is an important part of traditional life in places live Vanuatu, Tonga and Fiji, as well as a source of income to many smallholders, and can make for a relaxing evening with friends. It does have a definite downside if you overindulge. But then so do most things, I guess. There have been health scares about it in Europe, but they are pretty much unfounded. Anyway, there’s a piece on the BBC today (and thanks to Hannes for pointing it out to me) which tells of efforts in Vanuatu to defend the drink. It quotes Vincent Lebot, kava expert, and friend.

No GMOs in AGRA

Kofi Annan has said, very firmly, that A Green Revolution for Africa will not use genetically modified organisms. In his inaugural speech in Capetown, Annan said:

We in the alliance will not incorporate GMOs in our programmes. We shall work with farmers using traditional seeds known to them.

There are some interesting nuances there in just what will comprise “traditional seeds known to them”. It’s perfectly possible to promote destructive monoculture without resorting to genetic engineering. I’m happy to wait and see.