阿根廷花生产区花生(arachhis hypogaea L.)基因型对黑穗病的反应

Peanut Science Pub Date : 2021-02-03 DOI:10.3146/PS20-18.1
Marcelo Isaías Kearney, M. Kearney, M. Zuza, M. Ibañez, V. Peralta, G. Peiretti, M. Alcalde, C. Mojica, A. Rago
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引用次数: 1

摘要

遗传抗性是作物病害管理中最有效的工具。花生黑穗病是目前最重要的花生病害之一,其发病率在危害程度和作物覆盖面积上都呈上升趋势。本研究的目的是评估阿根廷Río Cuarto国立大学Agronomía兽医学院获得的不同基因型对黑穗病的反应及其产量。在2016/17、2017/18和2018/19作物季,在阿根廷Córdoba省的德赫扎(General Deheza)进行了3项试验,分别对乌查马(Uchaima)、乌特鲁伊尔(utrovel)和马普(Mapu)品种,先进品系LAx-1、LAx-2、LAx-3和LAx-4以及以Granoleico作为感病对照进行了评价。评估了花生黑穗病的最终发病率和严重程度以及籽粒产量。品种utrustr和先进系LAx-1在三个作物季节对黑穗病的反应最好,它们之间没有差异,但与其他基因型差异显著。两种基因型的发病率均低于6.8%,严重程度均低于0.21。在2016/17作物季节,LAx-1籽粒产量最高(3791.6 kg/ha)。在2017/18和2018/19作物季节,乌特鲁维尔的产量最高(1065和3975公斤/公顷)。敏感基因型籽粒产量在2016/17和2018/19作物季节低于2851.6 kg/ha,在2017/18作物季节低于805 kg/ha。LAx1和utrest基因型对花生黑穗病具有抗性。这是在阿根廷(乌特鲁维尔)开发的花生商业品种的第一份报告,证实了对黑穗病的耐受性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Response of peanut (Arachis hypogaea L.) genotypes to smut (Thecaphora frezii) in the peanut growing region of Argentina
Genetic resistance is the most efficient tool in crop disease management. Peanut smut is currently one of most important peanut diseases, with its incidence increasing in terms of both damage level and crop area covered. The aim of this study was to assess the response of different genotypes obtained by the Facultad de Agronomía y Veterinaria of the Universidad Nacional de Río Cuarto (Argentina) to smut and their yield. During the 2016/17, 2017/18 and 2018/19 crop seasons, three experimental assays were conducted in General Deheza (Córdoba province, Argentina) to evaluate the varieties Uchaima, Utré and Mapu, the advanced lines LAx-1, LAx-2, LAx-3 and LAx-4, and the cultivar Granoleico, which was used as susceptible control. Final incidence and severity of peanut smut, as well as kernel yield, were evaluated. The variety Utré and the advanced line LAx-1 exhibited the best response to smut over the three crop seasons, without differences between them, but differing significantly from the remaining genotypes. Both genotypes showed incidence below 6.8% and severity below 0.21. In the 2016/17 crop season, LAx-1 had the highest kernel yield (3791.6 kg/ha). In the 2017/18 and 2018/19 crop seasons, Utré had the highest yield (1065 and 3975 kg/ha). Kernel yield of susceptible genotypes was below 2851.6 kg/ha in the 2016/17 and 2018/19 crop seasons, and below 805 kg/ha in the 2017/18 crop season. Genotypes LAx1 and Utré are resistant to peanut smut. This is the first report of a peanut commercial variety developed in Argentina (Utré) with confirmed tolerance to smut.
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