科学家利用DNA测试来加快耐枯的美国栗子的繁殖,目的是将之恢复到东部森林。 Scientists use DNA testing to speed up breeding of blight-resistant American chestnuts, aiming to restore them to eastern forests.

基因分析正在加快努力,以恢复1950年代几乎被破碎的美国栗子。 Genetic analysis is accelerating efforts to restore the American chestnut, nearly wiped out by blight by the 1950s. 一项新的研究显示,DNA检测可以辨别树木具有抗病性,早期生长强劲,育种时间缩短。 A new study shows DNA testing can identify trees with disease resistance and strong growth early, cutting breeding time. 研究者的目标是创造混合体,其中美国栗子DNA占70%-85%,将中国栗子的抗御力与本地特质相结合。 Researchers aim to create hybrids with 70%–85% American chestnut DNA, combining resilience from Chinese chestnuts with native traits. 虽然有些人支持基因编辑以取得更快的结果,但监管和伦理问题仍然存在。 While some support gene editing for faster results, regulatory and ethical concerns remain. 目标是在几十年内将该物种归还东部森林。 The goal is to return the species to eastern forests within decades.