protecting second wheat through the reduction of take-all inoculum build up

通过减少全食接种物的积累来保护次生小麦

• 批准号: 100880
• 金额: $ 3.69万
• 依托单位: RAGT SEEDS LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=100880
• 关键词: protecting; second; wheat; through; reduction

Take-all is one of the most important fungal diseases of UK winter wheat, with up to half the crop being affected with losses costing farmers up to £60m per annum. The disease causes root system damage, resulting in reduced water and nitrogen uptake, which impacts on both yield and quality. Current control measures are not 100% effective and include cultural practices and chemical control. Previous work at Rothamsted Research has shown that the varieties Avalon and Cadenza show differences in the amount of the take-all fungus left behind in the soil after harvest. This influences the inoculum available for infection of a second wheat crop. The genetic loci controlling this trait have been identified and the aim of this project is to utilise these results in developing varieties which resist take-all build up (TAB). The 1st objective will be to assess a further range of UK varieties and lines from the partners with respect to this take-all build-up phenotype. The 2nd objective will be to map the genetic loci further, using more lines from the Avalon x Cadenza WGIN mapping population. From this analysis we aim to map this trait more finely in order to give us diagnostic markers for use in marker-assisted selection (MAS). During this project, we will have selected varieties and advanced material for direct use in the market place which show this reduced TAB phenotype, giving added value to material currently entering registration. Development of UK varieties carrying this unique trait will benefit not only our companies, but also wheat productivity by increasing yields by up to 1.9m tonnes pa.

赤霉病是英国冬小麦最重要的真菌病害之一，多达一半的作物受到影响，每年给农民造成的损失高达 6000 万英镑。这种病害会导致根系受损，导致水和氮的吸收减少。目前的控制措施并非 100% 有效，包括栽培措施和化学控制，洛桑研究中心之前的研究表明，Avalon 和 Cadenza 品种的残留真菌数量存在差异。在这会影响可用于感染第二次小麦作物的接种物，控制该性状的基因位点已被确定，该项目的目的是利用这些结果来开发抗全食积累的品种。第一个目标是评估来自合作伙伴的更多英国品种和品系的这种全能构建表型，第二个目标是使用来自阿瓦隆的更多品系进一步绘制遗传基因座图。 x 华彩通过该分析，我们的目标是更精细地绘制该性状，以便为我们提供用于标记辅助选择 (MAS) 的诊断标记。市场上显示出这种减少的 TAB 表型，为目前进入注册的材料带来附加值，具有这种独特性状的英国品种的开发不仅有利于我们的公司，而且每年产量可提高 190 万吨，从而提高小麦生产力。