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Brazilian researchers re-mix coffee varieties to combat climate change

Oliveiro Guerreiro Filho, an agronomist at the Campinas Agronomy Institute, wanders among a mess of coffee plants. Unlike the uniform rows on most Brazilian coffee farms each cluster is a little different.

Researchers hope that the genes from these 15 non-commercial and uncommon breeds, such as racemosa and liberica, could help to ensure future supplies of Arabica coffee.

Scientists warn of the impact climate change will have on arabica, the most common bean in coffee production. Brazil is expected to be among those countries that see a decline in output.

Rabobank released a report this week that said climate change could render 20% of the arabica-growing areas in the world unsuitable to grow coffee by 2050.

Scientists at the Sao Paulo research institute hope to develop more resistant arabica types by introducing genetic material of more rustic species of coffee into new hybrids.

Farmers in Indonesia and Malaysia have praised liberica for its hardiness against hotter, drier climates. They planted small plots to test how they would fare in drought.

Jason Liew is the founder of My Liberica in Malaysia's Johor State. The plantation produces a variety of coffee that can tolerate high temperatures and heat. It also has a disease-resistant trait.

Brazilian researchers are able to bring these traits into more popular and productive arabica plants.

Guerreiro?Filho stated that they have been working for years at the Institute to transfer drought-tolerance genes from racemosa to arabica. "We are trying to create drought-tolerant Arabica varieties."

This can take years of research. Scientists have to produce cross-bred seedlings, and then expose these hybrid varieties to harsh environments in order to evaluate them and identify the most robust plants. This can take up to 30 years.

Hybrids are also evaluated for their?increased ability to resist pests and disease, as well as better quality. Arabica crossed with liberica, for example, has shown to be more resistant to coffee-rust, which is a fungus.

Rodolfo?Olivera, the head of the Brazilian state?agency Embrapa’s coffee unit, explained that research such as the ones underway at the Institute is key to the future success of coffee.

Oliveira stated that working with other species of coffee is important because arabica's genetic base is so narrow, it makes it vulnerable to pests and diseases. Climate change also poses a threat. Reporting by Oliver Griffin, Additional reporting by Ashley Tang and Dewi Kurianiawati from Kuala Lumpur; Editing and proofreading by Brad Haynes and Rosalba o'Brien

(source: Reuters)