Researchers In Brazil Explore Hybridizing Arabica To Develop More Climate Resistant Coffee – CoffeeTalk

Under the influence of increasingly severe climate change, the world’s coffee supply is facing significant threats, especially to arabica, the most widely cultivated coffee bean. Agronomist Oliveiro Guerreiro Filho is investigating diverse species of coffee plants at the Campinas Agronomy Institute in Brazil, where he studies a variety of 15 rare and non-commercial breeds, including racemosa, liberica, and stenophylla. These species are believed to possess genetic traits that could render arabica more resilient against the tumultuous environmental changes anticipated by 2050, which may render 20% of current arabica cultivation zones unsuitable.

Research indicates that incorporating genetic material from these hardy coffee species into arabica hybrids can potentially enhance their resilience to adverse conditions. Characteristics such as heat tolerance and disease resistance exhibited by liberica are already being recognized in agricultural practices across regions like Indonesia and Malaysia, where farmers experiment with cultivars to assess their durability against drought conditions.

At the Campinas Agronomy Institute, researchers are dedicated to transferring drought tolerance genes from species like racemosa to develop superior arabica varieties. This endeavor involves extensive cross-breeding and rigorous testing over decades to identify the most resilient hybrids. Aside from drought tolerance, hybrids are evaluated for their pest and disease resistance, exemplified by the noteworthy resilience of arabica-liberica crosses to coffee rust and arabica-racemosa hybrids against coffee leaf miner moth larvae.

The research into alternative coffee species is crucial for sustaining the future of coffee production, as highlighted by Rodolfo Oliveira from Embrapa, the Brazilian state research agency. He points out the genetic vulnerability of arabica due to its narrow genetic base, stressing the necessity of introducing “wild” genetic material from less common species to safeguard coffee crops from evolving threats posed by pests, diseases, and changing climates.

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