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利用小麦的转化研究提高其应对气候变化的能力。

Harnessing translational research in wheat for climate resilience.

机构信息

International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico.

School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, PMB1, Glen Osmond SA 5064, Australia.

出版信息

J Exp Bot. 2021 Jul 10;72(14):5134-5157. doi: 10.1093/jxb/erab256.

Abstract

Despite being the world's most widely grown crop, research investments in wheat (Triticum aestivum and Triticum durum) fall behind those in other staple crops. Current yield gains will not meet 2050 needs, and climate stresses compound this challenge. However, there is good evidence that heat and drought resilience can be boosted through translating promising ideas into novel breeding technologies using powerful new tools in genetics and remote sensing, for example. Such technologies can also be applied to identify climate resilience traits from among the vast and largely untapped reserve of wheat genetic resources in collections worldwide. This review describes multi-pronged research opportunities at the focus of the Heat and Drought Wheat Improvement Consortium (coordinated by CIMMYT), which together create a pipeline to boost heat and drought resilience, specifically: improving crop design targets using big data approaches; developing phenomic tools for field-based screening and research; applying genomic technologies to elucidate the bases of climate resilience traits; and applying these outputs in developing next-generation breeding methods. The global impact of these outputs will be validated through the International Wheat Improvement Network, a global germplasm development and testing system that contributes key productivity traits to approximately half of the global wheat-growing area.

摘要

尽管小麦(普通小麦和硬粒小麦)是世界上种植最广泛的作物,但在研究投资方面,其投入落后于其他主要作物。当前的产量增长将无法满足 2050 年的需求,而气候压力使这一挑战更加复杂。然而,有充分的证据表明,可以通过利用遗传学和遥感领域强大的新工具,将有前途的想法转化为新型的育种技术,从而提高小麦的耐热耐旱能力。这些技术还可以用于从全球收藏的大量、在很大程度上尚未开发的小麦遗传资源中,鉴定出具有气候适应性的特性。本综述描述了多方面的研究机会,这些机会是耐热耐旱小麦改良联盟(由 CIMMYT 协调)的重点,这些机会共同为提高耐热耐旱性创造了一个渠道,具体包括:利用大数据方法改进作物设计目标;开发基于田间筛选和研究的表型工具;应用基因组技术阐明气候适应性特性的基础;并将这些成果应用于开发下一代育种方法。这些成果的全球影响将通过国际小麦改良网络得到验证,该网络是一个全球种质资源开发和测试系统,为全球约一半的小麦种植区提供关键的生产力特性。

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