18-BTT EAGER: A system for the production of haploid inducer lines and cytoplasmic male sterile doubled haploids for efficient hybrid production

18-BTT EAGER：用于生产单倍体诱导系和细胞质雄性不育双单倍体的系统，用于高效杂交生产

• 批准号: BB/S019995/1
• 负责人: Stephen Jackson
• 金额: $ 25.51万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FS019995%2F1
• 关键词: 18; BTT; EAGER; system; production

Hybrid cultivars are a cornerstone of modern crop production. Seed companies spend many years developing elite inbred parental lines that are used to produce the hybrid seed that farmers plant each season. A major bottleneck in the plant breeding cycle is the need to repeatedly backcross promising parental lines to make them fully inbred. One time-saving solution to this challenge is to use double haploids to directly produce fully inbred lines in one generation. With this approach a haploid plant is first isolated, and then chemical treatment is used to double its chromosomes. The resulting double haploid is by definition fully inbred. For this strategy to be of practical use to plant breeders, a reliable method for producing the initial haploid plants is required. In this proposal our objective is to develop and test a general strategy for making haploid inducer lines that should provide plant breeders with the tool they need to efficiently produce double haploid elite parental lines for hybrid seed production.

杂交品种是现代作物生产的基石。种子公司花了多年时间开发精英自交系亲本，用于生产农民每个季节种植的杂交种子。植物育种周期中的一个主要瓶颈是需要反复回交有希望的亲本系，使它们完全自交。解决这一挑战的一个省时的解决方案是利用双单倍体在一代内直接产生完全自交系。用这种方法，首先分离单倍体植物，然后使用化学处理使其染色体加倍。由此产生的双单倍体按照定义是完全近亲繁殖的。为了使这一策略在植物育种者中得到实际应用，需要一种可靠的方法来产生最初的单倍体植株。在这项建议中，我们的目标是开发和测试一种制造单倍体诱导系的一般策略，该策略应该为植物育种者提供有效地产生杂交制种所需的双单倍体优良亲本系所需的工具。