Physiological and genetic mechanisms underlying tolerance of bread wheat to ion toxicities

面包小麦对离子毒性耐受性的生理和遗传机制

• 批准号: LP0669873
• 负责人: Prof Zed Rengel
• 金额: $ 18.16万
• 依托单位: The University of Western Australia
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2006
• 资助国家: 澳大利亚
• 起止时间: 2006-09-05 至 2010-03-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0669873
• 关键词: Physiological; genetic; mechanisms; underlying; tolerance

Ion toxicities associated with acidic or alkaline soils and waterlogging cost about $190 million per year in lost yield in Western Australia alone. Soil ameliorants and agricultural measures to deal with these constraints are non-existent (B toxicity in alkaline sodic subsoils), non-effective (liming of acidic subsoils), expensive (drainage for waterlogged soils) or a combination of the above. This project will characterise wheat genotypes for tolerance to ion toxicities and will lay the groundwork for deliberate breeding effort toward pyramiding tolerance to ion toxicities in elite germplasm.

仅在西澳大利亚州，与酸性或碱性土壤和水涝相关的离子毒性每年造成的产量损失就约为1.9亿美元。处理这些限制因素的土壤改良剂和农业措施是不存在的（碱性含钠底土中的B毒性）、无效的（酸性底土的石灰）、昂贵的（积水土壤的排水）或上述因素的组合。本研究将对小麦基因型进行离子毒性耐受性鉴定，并将为在优良种质中进行离子毒性耐受性鉴定的育种工作奠定基础。