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Scientists use DNA testing to speed up breeding of blight-resistant American chestnuts, aiming to restore them to eastern forests.
Genetic analysis is accelerating efforts to restore the American chestnut, nearly wiped out by blight by the 1950s.
A new study shows DNA testing can identify trees with disease resistance and strong growth early, cutting breeding time.
Researchers aim to create hybrids with 70%–85% American chestnut DNA, combining resilience from Chinese chestnuts with native traits.
While some support gene editing for faster results, regulatory and ethical concerns remain.
The goal is to return the species to eastern forests within decades.
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Los científicos utilizan pruebas de ADN para acelerar la cría de castañas americanas resistentes a la plaga, con el objetivo de restaurarlas en los bosques orientales.