Wold's top cassava experts gather in Nigeria
The world’s top
cassava experts will gather in Nigeria to report progress on
developing new varieties of cassava with higher yield and nutritional
content. The meeting will take place on March 14-16, at the
International Institute of Tropical Agriculture (IITA), in Ibadan.
“Africa produces more than half of
the world’s cassava — about 86 million tons from over 10 million
hectares,” said Chiedozie Egesi, IITA-based project manager of the
Next Generation Cassava Breeding (NextGen Cassava) project, who also
works to biofortify cassava with essential micronutrients. “But
disease pathogens and climate change threaten cassava production and
jeopardize the income and food security of smallholder farmers. Since
2012, scientists on the NextGen Cassava project have been working to
significantly increase the rate of genetic improvement in cassava
breeding and unlock cassava’s full potential.”
Cassava is a clonally propagated crop
and seed set is difficult. New varieties with enhanced productivity
and nutritional traits typically take up to 10 years to develop.
Scientists on the NextGen project are
focused on giving breeders in Africa access to the most advanced
plant breeding technologies to deliver improved varieties to farmers
more rapidly.
“Partners of NextGen Cassava are
using a state-of-the-art plant breeding approach known as genomic
selection to improve cassava productivity for the 21st century,”
said Ronnie Coffman, Cornell professor of plant breeding and
genetics, director of International Programs, who is the principal
investigator on the multi-partner grant.
Genomic selection shortens breeding
cycles, provides more accurate evaluation at the seedling stage, and
gives plant breeders the ability to evaluate a much larger number of
clones without the need to plant them in the target environment.
Using genomic selection, new releases of cassava are ready in as
little as six years.
“The best clones from NextGen Cassava
genomic selection efforts are in Uniform Yield Trials this year and
are due to be released to farmers in the next two years,” said
Egesi.
Cassava is predicted to be one of the
few crops that will benefit from climate change because it requires
few inputs and can withstand drought, marginal soils and long-term
underground storage. A cash and subsistence crop, the storage roots
of this perennial woody shrub are processed, consumed freshly boiled
or raw, and eaten by people as well as animals as a low-cost source
of carbohydrates. No other continent depends on cassava to feed as
many people as does Africa, where 500 million people consume it
daily. “The purpose of NextGen Cassava project is to improve the
cassava breeding process making it faster and more efficient to
produce the varieties farmers need,” said Peter Kulakow, cassava
breeder at IITA, Ibadan.
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