Flood-resistant rice is now spreading as fast as the waters themselves. Five years after the first field trials, 5m farmers across the world are planting more than a dozen varieties of rice with flood-resistant genes, collectively called “Sub 1”. They are proliferating even faster than new rice varieties during the heady early days of the first green revolution in the 1960s. “And Sub 1 is the first of a new generation of seeds,” says Mr Zeigler. If all goes well, over the next few years plants that tolerate drought, salinity and extreme heat will revolutionise the cultivation of mankind’s most important source of calories. But that will depend on the technology working as promised and, in particular, on public policies that support a second green revolution.
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