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



Título del documento: The relationship between Fusarium head blight traits, thousand-kernel weight, and yield in winter wheat
Revista: Scientia Agricola
Base de datos: PERIÓDICA
Número de sistema: 000455468
ISSN: 0103-9016
Autors: 1
2
1
1
1
2
Institucions: 1Institute of Field and Vegetable Crops, Novi Sad. Serbia
2University of Novi Sad, Faculty of Agriculture, Novi Sad. Serbia
Any:
Volum: 79
Número: 3
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés 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
Disciplines Agrociencias,
Biología
Paraules clau: Gramíneas,
Hongos,
Fitopatología,
Trigo,
Fusarium,
Granos,
Peso
Keyword: Gramineae,
Fungi,
Phytopathology,
Wheat,
Fusarium,
Grains,
Weight
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