Unlocking the full reproductive potential for hybrid wheat breeding

释放杂交小麦育种的全部繁殖潜力

• 批准号: IM230100042
• 负责人: A/Prof Ryan Whitford
• 金额: $ 67.58万
• 依托单位: Murdoch University
• 依托单位国家: 澳大利亚
• 项目类别: Mid-Career Industry Fellowships
• 财政年份: 2023
• 资助国家: 澳大利亚
• 起止时间: 2023-07-01 至 2027-06-30
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/IM230100042
• 关键词: Unlocking; full; reproductive; potential; hybrid

Globally, wheat is cultivated as an inbred self-fertile crop with yield gains stagnating over the last decades. This contrasts with unabated yield gains and yield stability achieved for rice and corn through hybrid breeding and cross-pollination. Wheat hybrids hold potential for a 10-22% yield boost, but commercial deployment is restricted due to high seed production costs, a result of wheat’s floral architecture and poor outcrossing characteristics. This project aims to reduce costs by improving wheat’s female receptivity to airborne pollen, a major bottleneck to commercial realization of hybrids globally. Higher and more stable yields from wheat hybrids will ensure food security in the face of climate uncertainty and growing population.

在全球范围内，小麦作为近交自花授粉作物种植，过去几十年产量增长停滞不前。这与水稻和玉米通过杂交育种和异花授粉实现的产量增长和产量稳定性有增无减形成鲜明对比。小麦杂交种具有提高 10-22% 产量的潜力，但由于小麦的花结构和差的异交特性导致种子生产成本高昂，商业推广受到限制。该项目旨在通过提高小麦雌性对空气花粉的接受能力来降低成本，这是全球杂交种商业化的主要瓶颈。小麦杂交种的更高、更稳定的产量将在气候不确定性和人口增长的情况下确保粮食安全。