- Lots of Indian rice in the IRRI genebank. Any of it being used to develop drought-tolerant varieties?
- Lots of journalists in the Tunisian genebank.
- How they make coffee in Ethiopia.
- How they make popcorn the world over. You sometimes get popcorn (or popped sorghum) with coffee in Ethiopia, now I think of it. And since we’re on an Ethiopian kick, fancy some enjera? Gary Nabhan did.
- “Productivity vs. sustainability is a ‘false choice.’” Well I never. And probably not news to these people either, or these. But to these guys?
- A Twitter roundup from Embrapa.
- Ugly hybrid of two wild strawberries may cause allergies.
- Explanation of evolution of doubled genes in wild and cultivated sunflowers certainly causes pain in brain.
- Some good climate change news for the Atlantic croaker. Being a glass-totally-empty kinda guy I predict it tastes like shit.
Measuring diversity in Tibetan walnuts
You collect leaves from 220 walnut trees of two morphologically very distinct species (Juglans regia and J. sigillata) from two unrelated groups of families of villagers in each of six different villages in Tibet. You get the gene-jockeys to do their microsatellite stuff on the leaves. You calculate the contribution of species, of the kin relationship of the growers and of village to genetic diversity. You expect the biggest genetic differences to be between species.
You are wrong.
Yes, the “species,” which look totally different, are in fact indistinguishable genetically. But there were significant differences among villages, and smaller but still significant differences between unrelated families of farmers within villages. So, you might be particularly interested in certain traits, for improvement say (and so are the farmers: walnut landraces in this part of Tibet are often named after fruit phenotypes). But — in this case — morphology is not a great guide to the totality of the underlying genetic diversity. So you can’t use it alone for conservation.
Which is also the conclusion researchers in Benin arrived at in their study of another tree, akee (Blighia sapida), also just out. A conservation and use (domestication, in this case) strategy “should target not only the morphotypes recognized by local populations but should also integrate the population genetics information.”
Does this amount to a general rule?
Nibbles: Fungi, Dogs, Protected areas, Banana, Ethiopia, Haiti
- Chromosomes can hop from one pathogenic fungus to another. Probably not a good thing.
- Dogs originated in the Middle East after all. Decide, already, will ya?
- IUCN also has a Protected Area of the Day. Genebank of the day, anyone?
- Problems with bananas in Uganda surprisingly mainly abiotic. Live and learn.
- Vaviblog celebrates Gary Nabhan’s birthday. Kinda. Which is also St Patrick’s Day? How cool is that?
- Report on Haiti’s seed security. Needs digesting.
Documenting the farming transition around the world
Two recent papers shed light on that grey area where hunter-gatherers become farmers. From northern China, archaeological evidence is showing that 8,000 years ago it was highly mobile foraging bands interested in feeding not only themselves but also, interestingly, their hunting dogs, who in effect invented millet — that’s broomcorn millet (Panicum miliaceum) and foxtail millet (Setaria italica) — cultivation. This was later taken up and intensified by what are known as the Late Banpo Phase millet agriculturalists.
A thousand years previously, and half a world away, archaeological, paleoecological, linguistic and genetic data from the SW United States seems to suggest that “maize moved northward from central Mexico to [the] Southwest by being passed from one hunter-gatherer band to the next, who incorporated the crop into their subsistence economies and eventually became farmers themselves.” Not, that is, as a result of the movement of Mexican agriculturalists, which was the alternative scenario. Nothing to do with feeding their livestock in this case, though. Turkeys seem to have been domesticated much later.
Fair deal for rooibos
Before fair trade, small-scale farmers like Hendrik lived close to the breadline as prices for rooibos were squeezed by the market. But fair trade has tripled the farmers’ income. Plus, with the extra money they now get for the tea, Hendrik and his friends can invest in their future, buying their own farming equipment and their own tea court where the raw rooibos leaves are chopped and dried.
“Hendrik” is Hendrik Hesselman, from the Cedarberg region of South Africa. He’s one of 5,000 farmers from Cedarberg who produce the world’s supply of rooibos (or redbush) tea.
Mr Hesselman is a founding member of the 50-plus strong Heiveld Cooperative, which was established in 2003 — with backing from UKaid from the Department for International Development — “to get their tea recognised as Fairtrade, and to get a fair price for it.”
There are also photos, and a video on the community’s attempts to adapt to climate change. One of the things they’re doing is evaluating different “wild types” of rooibos for tolerance of drought conditions. I can’t find any reference to ex situ conservation activities, alas.