Author Topic: Salt-loving wheat could help ease food crisis  (Read 638 times)

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Salt-loving wheat could help ease food crisis
« on: March 12, 2012, 02:50:57 PM »
Quote
Salt-loving wheat could help ease food crisis
AFP


Plant scientists on Sunday said they had bred a strain of wheat that thrives in saline soils, boosting the quest to feed Earth's growing population at a time of water stress and climate change.
 
Durum wheat with a salt-loving gene had yields which were up to 25 percent greater than ordinary counterparts, according to trials carried out in highly saline fields.
 
The gene, called TmHKT1;5-A, helps remove sodium from water that is transported from the plant's roots to the leaves, said a research team led by Matthew Gilliham of the University of Adelaide, southern Australia.
 
Spotted in a scan of ancestral wheat strains, TmHKT1;5-A was inserted into a commercial strain by traditional cross-breeding, not through genetic engineering, which is contested in many countries.
 
Durum wheat -- Latin name Triticum turgidum -- is used for making pasta, bulgur and couscous. It is more salt-sensitive than bread wheat (Triticum aestivum).
 
By some estimates, world food requirements will soar by 70 percent by 2050 as the planet's population rises from seven billion today to nine billion.
 
The challenge will be made even tougher by the impact of climate change on rainfall patterns.
 
Salinity is already a bad problem in arid and semi-arid developing countries where soils are naturally salty or irrigation water has a high level of salt.
 
Publication of the study in the journal Nature Biotechnology coincided with the eve of the World Water Forum, in Marseille, France, where water scarcity and agricultural needs for water will be major issues.
 
In January, scientists in Britain and Japan unveiled a fast-track way to spot promising genes and splice them, using classical methods, into rice plants to make them salt-tolerant.
 
The first beneficiaries of this could be Japanese farmers whose fields were submerged by last year's tsunami.
 
Around 20,000 hectares (50,000 acres) of paddy fields in northeastern Japan were flooded by seawater, wrecking their ability to produce crops with conventional rice cultivars.
http://news.yahoo.com/salt-loving-wheat-could-help-ease-food-crisis-183056351.html

 

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