Adult‐plant resistance to net form net blotch in barley (Hordeum vulgare L.): Durability and genetic control

IF 1.5 4区农林科学 Q2 AGRONOMY

Plant Breeding Pub Date : 2024-05-27 DOI:10.1111/pbr.13191

Hugh Wallwork, Elysia Vassos, Tara Garrard, Mark Butt, Entesar Abood, Beata Sznajder, Diane Mather

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引用次数: 0

Abstract

The research reported here was conducted to follow up on observations of durable adult‐plant resistance to net form net blotch in several Australian varieties of barley (Hordeum vulgare L.). Over 11 years, isolates of Pyrenophora teres f. teres were collected and used to inoculate barley varieties. The resistance of five varieties (Clipper, Schooner, Sloop SA, Buloke and Scope) endured until the ninth year. To investigate the genetic control of this durable resistance, doubled haploid lines developed from the F1 generation of a cross between Sloop SA and the susceptible variety Fathom were inoculated with an isolate that appeared fully virulent on Fathom and were evaluated for adult plant resistance. Six quantitative trait loci were mapped: three with resistance from Sloop SA and three with resistance from Fathom. Effects were additive across loci and transgressive segregation provided a few lines with better resistance than Sloop SA. Although the resistance investigated here is no longer effective, insights gained from this research could help guide ongoing efforts in resistance breeding and disease control.

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大麦（Hordeum vulgare L.）成株对网状网斑病的抗性：耐久性和遗传控制

本文报告的研究是为了跟踪观察几个澳大利亚大麦（Hordeum vulgare L.）品种的成株对网斑病的持久抗性。在 11 年的时间里，研究人员收集了赤霉病菌（Pyrenophora teres f. teres）的分离株，并将其接种到大麦品种上。五个品种（Clipper、Schooner、Sloop SA、Buloke 和 Scope）的抗性一直持续到第九年。为了研究这种持久抗性的遗传控制，将 Sloop SA 与易感品种 Fathom 杂交的 F1 代培育出的双倍单倍体株系接种了在 Fathom 上表现出完全毒性的分离株，并对成株抗性进行了评估。绘制了六个数量性状位点：三个来自 Sloop SA 的抗性位点和三个来自 Fathom 的抗性位点。各基因位点的效应是相加的，转基因分离提供了一些抗性优于 Sloop SA 的品系。虽然本文所研究的抗性已不再有效，但从这项研究中获得的启示有助于指导当前的抗性育种和病害防治工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant Breeding 农林科学-农艺学

CiteScore

4.40

自引率

5.00%

发文量

审稿时长

3.0 months

期刊介绍： PLANT BREEDING publishes full-length original manuscripts and review articles on all aspects of plant improvement, breeding methodologies, and genetics to include qualitative and quantitative inheritance and genomics of major crop species. PLANT BREEDING provides readers with cutting-edge information on use of molecular techniques and genomics as they relate to improving gain from selection. Since its subject matter embraces all aspects of crop improvement, its content is sought after by both industry and academia. Fields of interest: Genetics of cultivated plants as well as research in practical plant breeding.