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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Screening of Wheat Varieties for Resistance to Head Scab Caused by Fusarium graminearum Schwabe
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Screening of Wheat Varieties for Resistance to Head Scab Caused by Fusarium graminearum Schwabe

机译：小麦抗禾谷镰刀菌引起的黑头病小麦品种的筛选

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摘要

In this study, variability in pathogenicity among Fusarium graminearum isolates from different locations in Ohio was determined. The most virulent isolates from these locations were chosen and used in segregation studies to evaluate the resistance of some resistant by resistant winter wheat crosses to Fusarium head scab. Differences in pathogenicity levels were significant among isolates even from the same location. Several generalizations can be made about the segregating generations in this study. The results indicated that Ning 7840 carries multiple genes for resistance. In addition, we found that Freedom and Ning 7840 have at least one resistance gene different. Although the level of resistance observed in the resistant by resistant cross appear to be adequate to protect the cultivar against head scab damage, higher levels of resistance would be useful in the future. As more resistant cultivars are identified, some popular but Fusarium scab suscebtible cultivars, may be replaced.
机译：在这项研究中，确定了俄亥俄州不同地区的禾谷镰刀菌分离株的致病性变异性。选择来自这些位置的最强毒株，并将其用于隔离研究中，以评估某些抗性冬小麦杂交品种对镰刀菌根结sc的抗性。即使在同一地点，分离株之间的致病性水平差异也很大。在这项研究中，可以对分离世代作一些概括。结果表明，宁7840具有多个抗病基因。此外，我们发现Freedom和Ning 7840至少具有一个不同的抗性基因。尽管在抗性杂交中观察到的抗性水平似乎足以保护品种免受头部结ab损害，但将来更高水平的抗性将是有用的。随着鉴定出更多的抗性品种，可以替换一些受欢迎但镰刀菌结sc易感的品种。

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