Making every seed count - Creating multifunctional regional seed mixtures for permanent grassland – A strategy for maintaining genetic diversity in commercially produced seed

让每颗种子都发挥作用 - 为永久草地创造多功能区域种子混合物 — 维持商业生产种子遗传多样性的策略

• 批准号: 10032857
• 金额: $ 3.32万
• 依托单位: DLF SEEDS LTD.
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10032857
• 关键词: Making; every; seed; count; Creating

Farmers (and wider society) need more resilient species mixtures for their productive permanent grassland in order to reduce dependencies on regular ploughing and re-seeding and mineral fertiliser and herbicide inputs. Multi-species leys, which consist of several species of improved grasses, legumes and forage herbs, have demonstrated the improved resilience to drought while still providing an economical level of production, without the use of carbon-intensive synthetic nitrogen fertiliser. The number of species used in these mixtures, however, is limited to those that perform well under sown conditions and have seed that is economically produced. Many other species with potential benefits remain a challenge to produce commercial quantities of seed from and to establish readily into new or existing grassland.An exploration of scientific evidence and literature on grasslands including data from the GB Countryside Survey, will identify the species (and the properties of those species) that grow successfully within multi-species grassland mixes across GB. This evidence will be used as a basis for selecting species which can be used to pilot approaches for seed provision for the grasslands of the future.There are three approaches to supplying native seeds for grassland creation and restoration projects. They can be collected from natural or wild populations, produced from managed natural populations or produced under cultivated seed production systems. These three methods have different advantages and limitations, particularly with regards to the ability to capture the genetic diversity of a species in a population.This project will investigate innovative methods of seed production for selected native plants which have beneficial properties for livestock, biodiversity, soil or wider ecosystem services. The aim is to use innovative plant propagation techniques to multiply up seed stock which will be collected from diverse natural habitats. The project will test approaches for seed collection in line with best practice guidelines of the European Native Seed Producers Association (ENSPA). It will also test innovative plant propagation techniques which allow for the perpetual maintenance of plants established from the original collection in order to prolong the capacity to produce 1st generation seed stock, thus maintaining the maximum genetic diversity of the original collection. Finally it will test a variety of seed germination techniques (stratification, scarification, post-harvest maturation and treatment with germination-stimulating hormones) in order to maximise the representation of the collected population while reducing any conscious or unconscious selection pressures.

农民（和更广泛的社会）需要更多的弹性物种混合物来使其有效的永久草原，以减少对常规耕作和再种物，矿物质肥料和除草剂输入的依赖性。多种物种Leys由几种改良的草，豆类和草药组成，已经证明了对干旱的弹性提高，同时仍提供经济的生产水平，而无需使用碳密集型合成氮肥。但是，这些混合物中使用的物种数量仅限于在播种条件下表现良好的物种，并且具有经济生产的种子。许多具有潜在利益的其他物种仍然是一项挑战，即从新的或现有的草原中生产商业数量的种子并将其建立成新的草原。对草原的科学证据和文献进行了探索，包括GB乡村调查的数据，将确定该物种（以及该物种）（以及该物种）这些物种的特性）在整个GB的多物种草原混合物中成功生长。这些证据将被用作选择物种的基础，该物种可用于为未来的草原提供种子提供方法。有三种方法可以为草原创造和恢复项目提供本土种子。它们可以从自然或野生种群中收集，这些人群是由托管天然种群产生的，也可以在栽培种子生产系统下产生的。这三种方法具有不同的优势和局限性，尤其是关于捕获人群中物种遗传多样性的能力。该项目将研究对所选本地植物的种子生产的创新方法，这些植物对牲畜，生物多样性，土壤，土壤具有有益的特性或更广泛的生态系统服务。目的是使用创新的植物传播技术来增加种子库存，这将从各种自然栖息地收集。该项目将根据欧洲本地种子生产商协会（ENSPA）的最佳实践指南测试种子收集方法。它还将测试创新的植物传播技术，该技术可以永久维护原始收藏品建立的植物，以延长生产第一代种子储备的能力，从而维持原始收集的最大遗传多样性。最后，它将测试各种种子发芽技术（分层，疤痕，收获后成熟和用发芽刺激激素的治疗​​），以最大程度地提高收集到的人群的表示，同时减少任何有意识或无意识的选择压力。