Eucalypts decoded and hybridized.
Long-crowing chicken origins
You may have noticed a neat new feature on the blog. There’s a “Show on map” link after some of the latest postings which whisks you off to a pointer to the geographic location of the story. Jeremy will say a bit more about how he did it and why later on. I bring it up now because it was the reason why I stumbled on an interesting paper.
You remember that video of the long-crowing chicken from a few days back? Well, how do you geo-tag that? Where does the weird creature come from? The caption on MySapceTV says that it is a pure-bred Totenko cockerel. If you google that, one of the things you get pointed to is a DNA study that suggests that this and a couple of other long-crowers were bred on Okinawa from fighting cocks from southern China or Indochina. Want to see exactly where Okinawa is? Click below…
Nigerian President has rice initiative
I found a story in today’s Vanguard, a Nigerian news site, that could serve as a case study to illustrate the complexities of the interaction between conservation and use of plant genetic resources. Government imposes levy on rice imports, and launches a Presidential Initiative, no less, on Rice Production, Processing and Export. High-yielding varieties — including the famous NERICA — are multiplied and made available to farmers. A “rice value chain” linking farmers, parboilers, millers, traders etc. is facilitated. A project called Promoting Pro-Poor Opportunities in Commodity and Service Markets (PropCom) is launched, funded by Britain’s DFID, “a market-driven intervention programme that facilitates initiatives which enable the production of quality local rice in sufficient quantities that can compete with imported rice and benefit the poor stakeholders.”
I have two questions for the students who will no doubt be given this case study to ponder in years to come. Is all this good or bad for rice genetic diversity? And will it be good or bad for rice farmers in the long run?
IITA cores its yams
A core collection has been identified for West African yams.
European corn borer not so boring
Jeremy had a post recently on how to keep track of emerging pests and diseases. Certainly services like ProMED-mail and HealthMap are incredibly valuable. But perhaps even better would be a way to predict what a disease might do before it actually does it, for example as a result of climate change. That’s what some Czech researchers have done for the European corn borer, a pest of maize. ((There’s also an assessment of the risk of spread to new areas in a recent study of the root-parasite Orobanche crenata, but that paper did not specifically consider climate change in any detail.)) They modelled its life cycle on the basis of daily weather data, both current, to see if the model fit reality, and possible future, to predict what the pest might do under different climate change scenarios. The result was that the corn borer will cover the entire agricultural area of the country by 2040-2075, by which time “maize is expected to partly replace traditional cereals (e.g. winter wheat, rye, etc.).” That’s a frightening prospect. Better start planning – and breeding – for it now. ((A recent paper on wheat spot blotch in the East Gangetic Plains of India, Bangladesh and Nepal describes how breeding has made good resistant varieties available, but adds that climate change is tilting the playing field in favour of the disease, which means that breeders can’t afford to rest on their laurels.))