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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Evolution of wild cereals during 28 years of global warming in Israel
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Evolution of wild cereals during 28 years of global warming in Israel

机译:以色列全球变暖28年期间野生谷物的演变

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摘要

Climate change is a major environmental stress threatening biodiversity and human civilization. The best hope to secure staple food for humans and animal feed by future crop improvement depends on wild progenitors. We examined 10 wild emmer wheat (Triticum dicoccoides Koern.) populations and 10 wild barley (Hordeum spon-taneum K. Koch) populations in Israel, sampling them in 1980 and again in 2008, and performed phenotypic and genotypic analyses on the collected samples. We witnessed the profound adaptive changes of these wild cereals in Israel over the last 28 y in flowering time and simple sequence repeat allelic turnover. The revealed evolutionary changes imply unrealized risks present in genetic resources for crop improvement and human food production.
机译:气候变化是威胁生物多样性和人类文明的主要环境压力。通过未来的作物改良来确保人类和动物饲料主粮的最大希望取决于野生祖先。我们检查了以色列的10个野生Emmer小麦(Triticum dicoccoides Koern。)种群和10个野生大麦(Hordeum spon-taneum K. Koch)种群,分别在1980年和2008年进行了采样,并对收集的样本进行了表型和基因型分析。我们目睹了以色列野生谷类在开花期的最后28年中发生了深刻的适应性变化,并进行了简单的序列重复等位基因更新。揭示的进化变化暗示遗传资源中存在尚未实现的风险,可用于作物改良和人类粮食生产。

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