Les chercheurs de l’université de Californie font état d’une surprenante découverte: un gène qui «étanchéifie» les plants de riz les protège également de la sécheresse. Le gène Sub1a, naturellement présent dans certaines variétés à faible rendement, en Inde, a été découvert dans les années 1990 à l’Institut international de recherche sur le riz, aux Philippines.
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Showing items 1 through 9 of 11.-
Library ResourceJournal Articles & BooksJune, 2011Philippines
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Library ResourceJournal Articles & BooksJune, 2011Fiji
Une algue rouge vivant dans la mer qui baigne les îles Fidji pourrait contribuer à lutter contre le paludisme. Une équipe de chercheurs américains a découvert que l’algue Callophycus serratus contient des composés chimiques capables de détruire le parasite responsable du paludisme, le Plasmodium falciparum. Cette algue produit diverses substances antimicrobiennes qui semblent agir essentiellement contre les champignons microscopiques.
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Library ResourceJournal Articles & BooksJune, 2011Global
Une équipe de scientifiques de l’International Livestock Research Institute (ILRI) a identifié toutes les zones à haut risque du monde dans lesquelles la famine et les conséquences négatives du changement climatique s’exacerberont particulièrement violemment. Ces régions sont principalement situées en Afrique et en Asie du Sud, mais la Chine et l’Amérique latine pourraient également être concernées. Dans moins de 40 ans, la saison agricole de ces régions sera plus courte, plus chaude et plus sèche, mettant en danger des centaines de millions de personnes déjà très démunies.
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Library ResourceJournal Articles & BooksJuly, 2009South Africa
Poverty in rural households have deepened in the past two years through world events: unprecedented rises in food and fuel prices were followed by global economic meltdown, all amidst growing climate uncertainty. Balancing water availability within and across growing seasons, water harvesting helps to buffer households against drought. Research on water harvesting in South Africa has focused on rural household livelihoods. Innovative results on appropriate water harvesting technologies and food security facilitation techniques are now being implemented in villages across South Africa.
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Library ResourceJournal Articles & BooksJuly, 2009Global
A team of German and Spanish scientists has genetically modified a maize plant in a way that markedly increases the level of three vitamins in the maize kernels. The level of betacarotene, the precursor to vitamin A, was raised by a factor of 169, the level of vitamin C increased six-fold and the level of folic acid, a vitamin of the B group, doubled.
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Library ResourceJournal Articles & BooksJanuary, 2008Global
Since 1996, the Centres for Agriculture in the Tropics and Subtropics of the Universities of Hohenheim and Göttingen and of Berlin's Humboldt University have organised a conference, the ''Tropentag'', once a year to present and discuss recent findings in research on agriculture and rural development. Other universities, like Kassel-Witzenhausen, have joined in, and the number of participants, papers and posters presented has more than doubled.
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Library ResourceJournal Articles & BooksDecember, 2013Global
Recent studies have shown that modern breeding for high yield, visual appearance and long shelf life led to an unintentional decline in taste and the content of essential nutrients in vegetables. AVRDC – The World Vegetable Center is studying whether traditional vegetables are more nutritious than modern varieties and whether early growth stages of these vegetables offer consumers a higher content of phytonutrients.
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Library ResourceJournal Articles & BooksJune, 2014Global, Switzerland
Family farms are often associated with greater sustainability. But the definition of sustainability is a highly disputable topic. The School of Agricultural, Forest and Food Sciences (HAFL) in Switzerland has developed a method enabling a more objective evaluation of sustainability in agriculture. Response-Inducing Sustainability Evaluation (RISE) covers ten sustainability indicators and supplies the foundation for agricultural advice.
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Library ResourceJournal Articles & BooksAugust, 2015Global
Experts agree that the rising demand for fish for human consumption cannot be met without a major expansion and sustainable intensification of aquaculture. Our WorldFish authors describe the areas in which research plays a particularly important role in this context.
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Library ResourceJournal Articles & BooksMarch, 2014Global
Providing extension and advisory services is expensive. There are salaries to be paid, transportation and operational funds to be provided, buildings to be rented or built, demonstration plots to maintain, and continued education to be offered to the extension staff. And then there is the need to continually invest in an overall functioning agricultural innovation system with strong research and teaching institutions, enabling policies, as well as to make capital investments in rural infrastructure that will not only benefit the farming population.
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