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Symptomless infection of barley; resistance breeding and integrated crop protection strategies (SIBLINGS)

大麦无症状感染；

基本信息

批准号：
TS/I000747/1
负责人：
Bruce Fitt
金额：
$ 5.23万
依托单位：
Rothamsted Research
依托单位国家：
英国
项目类别：
Research Grant
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=TS%2FI000747%2F1
关键词：
Symptomless infection barley resistance breeding

项目摘要

This project addresses the TSB criteria novel approaches to address pests, diseases, disease vectors and weeds and development of durable pest-and disease-resistant crop varieties . We will deliver more effective control of a serious and problematic pathogen of barley through understanding its entire life cycle, rather than just the visible disease syptoms which have been used previously to identify infection. The project will use new knowledge about the symptomless rhynchosporium infection of barley to develop new varieties that are more durable to rhynchosporium infection and therefore protected against yield loss to this pathogen. Various sources of host plant resistance will be assessed for efficacy so that the best ones are prioritised. The introgression of an alien resistance gene offers the opportunity of introducing a novel resistance mechanism that, backed up by the marker tools and ability to pyramid with other durable resistance genes, will enjoy a much greater useful variety lifespan in widespread use. Novel molecular and microscopy methods using tagged pathogen isolates will be used to generate knowledge of resistance mechanisms so that appropriate combinations of natural resistance sources can be brought together in optimum combinations. The project will also help develop crop protection strategies which are strategically well directed for increased yield response and risk reduction. Their enhanced effectiveness will be based on an understanding of the way different resistance genes in varieties work and using appropriate fungicides in more intelligent, integrated programmes. The proposal therefore represents a novel approach to both breeding for durable resistance and more effective crop protection with existing chemicals, whilst informing discovery strategies. The durable resistance sources will be developed in new barley varieties and overall we will deliver more effective control of a serious and problematic pathogen of barley through understanding its entire lifecycle rather than just the visible symptoms which have been used previously.

该项目符合 TSB 标准，提出解决害虫、疾病、病媒和杂草的新方法，并开发持久的抗虫害作物品种。我们将通过了解大麦严重且有问题的病原体的整个生命周期，而不仅仅是以前用于识别感染的可见疾病症状，来更有效地控制大麦病原体。该项目将利用有关大麦无症状钩孢子虫感染的新知识来开发对钩孢子虫感染更耐受的新品种，从而防止这种病原体造成的产量损失。将评估各种来源的宿主植物抗性的功效，以便优先考虑最好的。外来抗性基因的渗入提供了引入新的抗性机制的机会，该机制在标记工具和与其他持久抗性基因聚合的能力的支持下，将在广泛使用中享有更长的有用品种寿命。使用标记的病原体分离株的新型分子和显微镜方法将用于产生抗性机制的知识，以便可以将自然抗性来源的适当组合以最佳组合组合在一起。该项目还将帮助制定作物保护战略，这些战略在战略上有针对性地提高产量反应和降低风险。它们的有效性增强将基于对品种中不同抗性基因的工作方式的了解，以及在更智能、综合的计划中使用适当的杀菌剂。因此，该提案代表了一种新方法，既可以利用现有化学品进行持久抗性育种，也可以更有效地保护作物，同时为发现策略提供信息。持久的抗性来源将在新的大麦品种中开发，总体而言，我们将通过了解其整个生命周期而不仅仅是以前使用的可见症状来更有效地控制大麦的严重和有问题的病原体。