Charcoal rot severity and yield components of common bean cultivars inoculated with Macrophomina phaseolina

Summa Phytopathologica Pub Date : 2020-12-01 DOI:10.1590/0100-5405/240745

E. Zanella, Juliano Berghetti, B. Scheidt, R. Casa, A. Bogo, M. J. Gonçalves, F. Martins

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引用次数: 2

Abstract

ABSTRACT Macrophomina phaseolina is a soilborne pathogen with a wide range of hosts and its control through agricultural practices is difficult. The aim of this study was to quantify the severity of root rot (SRR) caused by M. phaseolina in common bean cultivars and its impact on yield components. The experiments were carried out under greenhouse conditions with the common bean cultivars ‘ANFC-9 Agro Norte’, ‘BRS Esteio’, ‘BRS Estilo’, ‘BRS Pérola’, ‘FTS Soberano’, ‘IPR Campos Gerais’, ‘IPR Tangará’, ‘IPR Tuiuiú’, ‘IPR Uirapurú’ and ‘TAA Dama’. Three isolates of M. phaseolina obtained from infected plants of common bean, soybeans and maize were inoculated in the common bean cultivars. In the phenological stage R9 of grain harvest maturity, the SRR and the yield components of root dry mass (RDM), number of pods per plant (NPP), number of grains per plant (NGP) and grain mass per plant (GMP) were assessed. All common bean cultivars were susceptible to M. phaseolina, showing a reduction in NPP, NGP and GMP. SPR was greater than 75%, regardless of the origin of isolates. Considering the average of cultivars, there was a significant decrease of 54.3% in RDM, compared to control treatments. The cultivars ‘IPR Tangará’, ‘ANFC-9 Agro Norte’, ‘BRS Esteio’, ‘BRS Pérola’ and ‘FTS Soberano’ had a decrease in at least one yield component, while a reduction occurred in all components for cultivar ‘IPR Tangará’. There was an average decrease in NPP, NGP and GMP of 7.9%, 7.6% and 7.2%; 13.4%, 12.8% and 6.7%; and 14.2%, 12.9% and 10.1%, considering the isolates obtained from beans, soybeans and maize, respectively.

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普通大豆品种接种蚕豆粉腐病的严重程度和产量构成

摘要：大磷虾是一种寄主广泛的土传病原体，通过农业实践很难对其进行控制。本研究的目的是量化由M.phaseolina引起的普通大豆品种根腐病（SRR）的严重程度及其对产量构成的影响。试验是在温室条件下用常见的豆类品种“ANFC-9 Agro Norte”、“BRS Esteio”、“BR S Estilo”、”BRS Pérola“、”FTS Soberano“、”IPR Campos Gerais“、”IMP Tangará“、“IPR Tuuiú”、”IPRUirapurú“和”TAA Dama“进行的。将从普通大豆、大豆和玉米感染植物中分离得到的三个相球孢M.phaseolina菌株接种到普通大豆品种中。在收获成熟期的R9阶段，对SRR和根干物质（RDM）、单株荚数（NPP）、单株粒数（NGP）和单株粒质量（GMP）的产量组成进行了评估。所有常见的大豆品种都对豆球蛋白敏感，表现出NPP、NGP和GMP的降低。无论分离物的来源如何，SPR均大于75%。考虑到品种的平均值，与对照处理相比，RDM显著降低了54.3%。品种“IPR Tangará”、“ANFC-9 Agro Norte”、“BRS Esteio”、“BR S Pérola”和“FTS Soberano”的至少一个产量组成部分都有所下降，而品种“IPR-Tangará”的所有组成部分都出现了下降。NPP、NGP和GMP平均下降7.9%、7.6%和7.2%；分别为13.4%、12.8%和6.7%；分别为14.2%、12.9%和10.1%。

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来源期刊

Summa Phytopathologica Agricultural and Biological Sciences-Plant Science

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Summa Phytopathologica is a publication of the São Paulo State Plant Pathology Association (APF), Botucatu SP. Summa Phytopathologica (SP) is dedicated to publishing technical and scientific articles that describe original research in the area of Plant Pathology that may contribute significantly to its progress. SP accepts papers written in Portuguese, English, or Spanish. Its abbreviated title, Summa Phytopathol., should be used in bibliographies, footnotes and bibliographical references and strips.