The Experts below are selected from a list of 8730 Experts worldwide ranked by ideXlab platform
H. De Jong - One of the best experts on this subject based on the ideXlab platform.
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Progress towards wheat varieties with resistance to Fusarium Head Blight
Food Control, 2003Co-Authors: T.w. Hollins, Peter Ruckenbauer, H. De JongAbstract:Many breeders are urgently trying to improve genetic resistance to Fusarium Head Blight. Within a set of 17 varieties tested in 4 countries resistance seems to be stable across pathogen species and location and a reduction in disease appears to result in a proportional reduction in deoxynivale (DON) content. Breeding is a compromise between achieving improvements in yield, quality and resistance and many characters are technically difficult to handle, sometimes making progress slow. New technology is likely to increase the efficiency of this process and we hope to see better resistance to Fusarium Head Blight in Europe within the next 10 years.
L V Madden - One of the best experts on this subject based on the ideXlab platform.
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a quantitative review of tebuconazole effect on Fusarium Head Blight and deoxynivalenol content in wheat
Phytopathology, 2007Co-Authors: Pierce A Paul, Marcia Mcmullen, P E Lipps, D E Hershman, M A Draper, L V MaddenAbstract:ABSTRACT A meta-analysis of the effect of tebuconazole (e.g., Folicur 3.6F) on Fusarium Head Blight and deoxynivalenol (DON) content of wheat grain was performed using data collected from uniform fungicide trials (UFTs) conducted at multiple locations across U.S. wheat-growing regions. Response ratios (mean disease and DON levels from tebuconazole-treated plots, divided by mean disease and DON levels from untreated check plots) were calculated for each of 139 studies for tebuconazole effect on Fusarium Head Blight index (IND; field or plot-level disease severity, i.e., mean proportion of diseased spikelets per spike) and 101 studies for tebuconazole effect on DON contamination of harvested grain. A random-effects meta-analysis was performed on the log-transformed ratios, and the estimated mean log ratios were transformed to estimate the mean (expected) percent control for IND ( CIND ) and DON ( CDON). A mixed effects meta-analysis was then done to determine the effects of wheat type (spring versus winter ...
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relationship between visual estimates of Fusarium Head Blight intensity and deoxynivalenol accumulation in harvested wheat grain a meta analysis
Phytopathology, 2005Co-Authors: Pierce A Paul, P E Lipps, L V MaddenAbstract:ABSTRACT The association between Fusarium Head Blight (FHB) intensity and deoxynivalenol (DON) accumulation in harvested grain is not fully understood. A quantitative review of research findings was performed to determine if there was a consistent and significant relationship between measures of Fusarium Head Blight intensity and DON in harvested wheat grain. Results from published and unpublished studies reporting correlations between DON and Fusarium Head Blight “index” (IND; field or plot-level disease severity), incidence (INC), diseased-Head severity (DHS), and Fusarium-damaged kernels (FDK) were analyzed using meta-analysis to determine the overall magnitude, significance, and precision of these associations. A total of 163 studies was analyzed, with estimated correlation coefficients (r) between -0.58 and 0.99. More than 65% of all r values were >0.50, whereas less that 7% were <0. The overall mean correlation coefficients for all relationships between DON and disease intensity were significantly d...
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risk assessment models for wheat Fusarium Head Blight epidemics based on within season weather data
Phytopathology, 2003Co-Authors: E D De Wolf, L V Madden, P E LippsAbstract:ABSTRACT Logistic regression models for wheat Fusarium Head Blight were developed using information collected at 50 location-years, including four states, representing three different U.S. wheat-pr...
P E Lipps - One of the best experts on this subject based on the ideXlab platform.
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a quantitative review of tebuconazole effect on Fusarium Head Blight and deoxynivalenol content in wheat
Phytopathology, 2007Co-Authors: Pierce A Paul, Marcia Mcmullen, P E Lipps, D E Hershman, M A Draper, L V MaddenAbstract:ABSTRACT A meta-analysis of the effect of tebuconazole (e.g., Folicur 3.6F) on Fusarium Head Blight and deoxynivalenol (DON) content of wheat grain was performed using data collected from uniform fungicide trials (UFTs) conducted at multiple locations across U.S. wheat-growing regions. Response ratios (mean disease and DON levels from tebuconazole-treated plots, divided by mean disease and DON levels from untreated check plots) were calculated for each of 139 studies for tebuconazole effect on Fusarium Head Blight index (IND; field or plot-level disease severity, i.e., mean proportion of diseased spikelets per spike) and 101 studies for tebuconazole effect on DON contamination of harvested grain. A random-effects meta-analysis was performed on the log-transformed ratios, and the estimated mean log ratios were transformed to estimate the mean (expected) percent control for IND ( CIND ) and DON ( CDON). A mixed effects meta-analysis was then done to determine the effects of wheat type (spring versus winter ...
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relationship between visual estimates of Fusarium Head Blight intensity and deoxynivalenol accumulation in harvested wheat grain a meta analysis
Phytopathology, 2005Co-Authors: Pierce A Paul, P E Lipps, L V MaddenAbstract:ABSTRACT The association between Fusarium Head Blight (FHB) intensity and deoxynivalenol (DON) accumulation in harvested grain is not fully understood. A quantitative review of research findings was performed to determine if there was a consistent and significant relationship between measures of Fusarium Head Blight intensity and DON in harvested wheat grain. Results from published and unpublished studies reporting correlations between DON and Fusarium Head Blight “index” (IND; field or plot-level disease severity), incidence (INC), diseased-Head severity (DHS), and Fusarium-damaged kernels (FDK) were analyzed using meta-analysis to determine the overall magnitude, significance, and precision of these associations. A total of 163 studies was analyzed, with estimated correlation coefficients (r) between -0.58 and 0.99. More than 65% of all r values were >0.50, whereas less that 7% were <0. The overall mean correlation coefficients for all relationships between DON and disease intensity were significantly d...
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Relationship between visual estimates of Fusarium Head Blight intensity and deoxynivalenol accumulation in harvested wheat grain: a meta-analysis.
Phytopathology, 2005Co-Authors: Pierce A Paul, P E Lipps, Laurence V. MaddenAbstract:ABSTRACT The association between Fusarium Head Blight (FHB) intensity and deoxynivalenol (DON) accumulation in harvested grain is not fully understood. A quantitative review of research findings was performed to determine if there was a consistent and significant relationship between measures of Fusarium Head Blight intensity and DON in harvested wheat grain. Results from published and unpublished studies reporting correlations between DON and Fusarium Head Blight “index” (IND; field or plot-level disease severity), incidence (INC), diseased-Head severity (DHS), and Fusarium-damaged kernels (FDK) were analyzed using meta-analysis to determine the overall magnitude, significance, and precision of these associations. A total of 163 studies was analyzed, with estimated correlation coefficients (r) between -0.58 and 0.99. More than 65% of all r values were >0.50, whereas less that 7% were
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risk assessment models for wheat Fusarium Head Blight epidemics based on within season weather data
Phytopathology, 2003Co-Authors: E D De Wolf, L V Madden, P E LippsAbstract:ABSTRACT Logistic regression models for wheat Fusarium Head Blight were developed using information collected at 50 location-years, including four states, representing three different U.S. wheat-pr...
Fred A Van Eeuwijk - One of the best experts on this subject based on the ideXlab platform.
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genotype x strain interactions for resistance to Fusarium Head Blight caused by Fusarium culmorum in winter wheat
Theoretical and Applied Genetics, 1991Co-Authors: C H A Snijders, Fred A Van EeuwijkAbstract:In 3 consecutive years, a set of 17 winter wheat genotypes, representing a wide range of Fusarium Head Blight resistance, was inoculated with four strains of Fusarium culmorum. Fusarium Head Blight ratings were analyzed. The interaction between genotypes, strains, and years was described using a Finlay-Wilkinson model and an Additive Main effects and Multiplicative Interaction effects (AMMI) model. The interaction consisted primarily of a divergence of genotypical responses with increasing disease pressure, modified by genotype specific reactions in certain years. The divergence was mainly caused by one very pathogenic strain. The Fusarium Head Blight resistance in this study can be described as horizontal resistance in terms of Vanderplank, with the exception of three genotypes selected from one particular cross that showed a ‘strain-year combination’ dependent resistance which was ineffective in 1 year.
R K Jones - One of the best experts on this subject based on the ideXlab platform.
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the effect of previous crop residues and tillage on Fusarium Head Blight of wheat
Plant Disease, 2000Co-Authors: Ruth Dillmacky, R K JonesAbstract:ABSTRACT Effects of previous crop residues and tillage practices on Fusarium Head Blight (FHB) of wheat were examined. Fusarium Head Blight was monitored in plots of the FHB-susceptible spring wheat cultivar Norm following crops of corn, wheat, and soybeans in 1995, 1996, and 1997. Moldboard plow, chisel plow, and no-till treatments were imposed perpendicular to crop strips to establish a range of residue levels in each of the previous crop residues. Fusarium Head Blight incidence and severity were greatest when wheat followed corn and least when wheat followed soybeans. Incidence and severity were lower in moldboard plowed plots than in either chisel plowed or no-till plots, although differences among chisel plow and no-till treatments were not apparent. Yields of wheat were approximately 15% lower in plots where wheat followed corn or wheat than in wheat following soybeans and were 10% greater in moldboard plowed plots than in either chisel plowed or no-till treatments. The deoxynivalenol (DON) content ...
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the effect of previous crop residues and tillage on Fusarium Head Blight of wheat
Plant Disease, 2000Co-Authors: Ruth Dillmacky, R K JonesAbstract:Effects of previous crop residues and tillage practices on Fusarium Head Blight (FHB) of wheat were examined. Fusarium Head Blight was monitored in plots of the FHB-susceptible spring wheat cultivar Norm following crops of corn, wheat, and soybeans in 1995, 1996, and 1997. Moldboard plow, chisel plow, and no-till treatments were imposed perpendicular to crop strips to establish a range of residue levels in each of the previous crop residues. Fusarium Head Blight incidence and severity were greatest when wheat followed corn and least when wheat followed soybeans. Incidence and severity were lower in moldboard plowed plots than in either chisel plowed or no-till plots, although differences among chisel plow and no-till treatments were not apparent. Yields of wheat were approximately 15% lower in plots where wheat followed corn or wheat than in wheat following soybeans and were 10% greater in moldboard plowed plots than in either chisel plowed or no-till treatments. The deoxynivalenol (DON) content of harvested grain was significantly correlated with FHB incidence and severity. The DON level in wheat following soybeans, averaged across tillage treatments, was 25% lower than in wheat following wheat and 50% of the level in wheat following corn. These findings suggest that changes in regional tillage practices, principally the move toward conservation tillage and reduced-till systems, contributed to the recent FHB epidemics in the Upper Midwest. Because differences in the type and quantity of crop residues in small plots affected disease development, it is likely that local sources of inoculum, such as those within a grower's field, contribute directly to the inoculum load and disease potential. The implication of these findings is that selection of cultural practices aimed to reduce inoculum-borne residues will assist in the control of FHB.
