The relationship between Fusarium head blight traits, thousand-kernel weight, and yield in winter wheat

IF 2.6 3区 农林科学 Q1 Agricultural and Biological Sciences
R. Jevtić, Nina Skenderović, V. Župunski, M. Lalošević, B. Orbović, S. Maširević
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引用次数: 2

Abstract

ABSTRACT: Factors influencing Fusarium head blight (FHB) occurrence and yield losses in winter wheat have extensively been studied through the years; however, reports on the relationship between FHB traits and yield are conflicting. In addition, studies neglected the relationship between FHB traits and thousand-kernel weight (TKW). This study evaluated the variability in the relationship between FHB traits, TKW, and yield under field conditions, using 40 commercial winter wheat cultivars differing in resistance/susceptibility to FHB. In general, the FHB index had greater relation to yield, while Fusarium-damaged kernels (FDK) was more related to TKW. The relationship between yield, TKW, FHB index, and FDK was also determined by resistance/susceptibility of winter wheat cultivars. Fusarium-damaged kernels influenced yield more in moderately resistant (R2 = 43 %) than in susceptible/moderately susceptible cultivars (R2 = 27 %). The influence of the FHB index on TKW was weak (R2 = 9 %) in susceptible/moderately susceptible cultivars and in moderately resistant ones (R2 = 1 %). The potential to predict TKW from yield under pathogen pressure was limited due to the moderate-to-positive correlation between yield and TKW (r = 0.349, p < 0.001). This study provides insights into factors that influence TKW under FHB pathogen pressure and gives direction to more efficient and reliable investigations on grain resistance toward FHB.
冬小麦赤霉病性状、千粒重与产量的关系
摘要/ ABSTRACT摘要:近年来,人们对冬小麦赤霉病发生和产量损失的影响因素进行了广泛的研究。然而,关于FHB性状与产量之间关系的报道是相互矛盾的。此外,研究忽略了FHB性状与千粒重(TKW)的关系。本研究利用40个对赤霉病抗性/敏感性不同的商品冬小麦品种,评估了田间条件下赤霉病性状、TKW和产量之间关系的变异性。总体而言,FHB指数与产量的关系更大,而枯萎病损粒数(FDK)与TKW的关系更大。产量、TKW、FHB指数和FDK之间的关系也通过冬小麦品种的抗性/敏感性来确定。镰刀菌损伤的籽粒对产量的影响在中等抗性品种(R2 = 43%)大于敏感/中等敏感品种(R2 = 27%)。在敏感/中敏感品种和中抗性品种中,FHB指数对TKW的影响较弱(R2 = 9%), R2 = 1%。由于产量与TKW呈正相关(r = 0.349, p < 0.001),因此用病原菌压力下的产量预测TKW的潜力有限。本研究揭示了FHB病原菌压力下影响TKW的因素,为更有效、更可靠地研究粮食对FHB的抗性提供了指导。
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
Scientia Agricola
Scientia Agricola 农林科学-农业综合
CiteScore
5.10
自引率
3.80%
发文量
78
审稿时长
18-36 weeks
期刊介绍: Scientia Agricola is a journal of the University of São Paulo edited at the Luiz de Queiroz campus in Piracicaba, a city in São Paulo state, southeastern Brazil. Scientia Agricola publishes original articles which contribute to the advancement of the agricultural, environmental and biological sciences.
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