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
Autores: 1
2
1
1
1
2
Instituciones: 1Institute of Field and Vegetable Crops, Novi Sad. Serbia
2University of Novi Sad, Faculty of Agriculture, Novi Sad. Serbia
Año:
Volumen: 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
Disciplinas: Agrociencias,
Biología
Palabras clave: Gramíneas,
Hongos,
Fitopatología,
Trigo,
Fusarium,
Granos,
Peso
Keyword: Gramineae,
Fungi,
Phytopathology,
Wheat,
Fusarium,
Grains,
Weight
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