评估全球小麦品种对黑森蝇生物型 "大平原 "的抗性

Yunfeng Xu, Nida Ghori, Shabbir Hussain, Xiaoting Xu, Zhenqi Su, Dadong Zhang, Lanfei Zhao, Xuming Liu, Ming-Shun Chen, Guihua Bai
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引用次数: 0

摘要

黑飞虱是一种主要害虫,会对小麦(Triticum aestivum)的产量和品质造成严重损失。培育抗性栽培品种是将 HF 造成的小麦产量损失降至最低的最具成本效益的方法。本研究在温室实验中筛选了 2,496 个小麦品种,以确定其对 HF 生物型 "大平原"(GP)的抗性。为了从异质性抗性种质资源中提纯种子,我们从全球 1,595 个种质资源中至少有一株抗性植株的 331 个种质资源中回收了单株抗性植株,并利用提纯的种子确认了 27 个种质资源对 GP 生物型具有高抗性(HR),91 个种质资源对 GP 生物型具有中等抗性(MR)。在三次实验中对 203 个美国冬小麦品种进行了筛选,确定了 63 个高抗性品种和 28 个中抗性品种;对另外三个亚洲品种进行了筛选,确定了 4 个高抗性品种和 25 个中抗性品种。这项研究共鉴定出 96 个 HR 入选品系和 144 个 MR 入选品系。对这些 HR 和 MR 入系品种地理分布的分析表明,HF 作为主要小麦害虫的这些国家通常表现出较高的抗性入系品种频率,其中来自美国的 HR(81.3%)和 MR(30.6%)入系品种频率最高。这些新发现的抗性品种中有些可能含有新的高频抗性基因,可作为开发抗高频小麦栽培品种的宝贵资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluating a worldwide wheat collection for resistance to Hessian fly biotype ‘Great Plains’
Hessian fly (HF), Mayetiola destructor, is a major insect pest that causes severe losses in grain yield and quality of wheat (Triticum aestivum). Growing resistant cultivars is the most cost-effective approach to minimize wheat yield losses caused by HF. In this study, 2,496 wheat accessions were screened for resistance to the HF biotype ‘Great Plains’ (GP) in the greenhouse experiments. To purify seeds from heterogeneous resistant accessions, we recovered single resistant plants from 331 accessions that had at least one resistant plant after HF infestation of a global collection of 1,595 accessions and confirmed 27 accessions with high resistance (HR), and 91 accessions with moderate resistance (MR) to the GP biotype using purified seeds. Screening of 203 U.S. winter wheat accessions in three experiments identified 63 HR and 28 MR accessions; and screening of three additional Asian panels identified 4 HR and 25 MR accessions. Together, this study identified 96 HR accessions and 144 MR accessions. Analysis of the geographic distribution of these HR and MR accessions revealed that these countries with HF as a major wheat pest usually showed higher frequencies of resistant accessions, with the highest frequency of HR (81.3%) and MR (30.6%) accessions identified from the U.S. In addition, phenotyping of 39 wheat accessions that carry known HF resistance genes showed that all the accessions except H1H2 remain effective against GP biotype. Some of these newly identified resistant accessions may contain new HF resistance genes and can be valuable sources for developing HF resistant wheat cultivars.
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