A characterisation and evaluation (C&E) dataset for a wild/semi-natural perennial ryegrass representative germplasm collection

表征和评估（C

• 批准号: BB/X018598/1
• 负责人: Ian Armstead
• 金额: $ 29.96万
• 依托单位: Aberystwyth University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FX018598%2F1
• 关键词: characterisation; evaluation; C&E; dataset; wild

The aspiration of this programme is to increase the available information on field performance for the considerable range of plant genetic resources held in the Aberystwyth Seed Biobank for the important forage grass, perennial ryegrass. This information will be useful for grassland, environmental and agricultural scientists in developing experimental approaches to understanding performance and resilience and will inform the development of a genetic resources strategy for perennial ryegrass, i.e., for a UK-focused core collection. This information will also be valuable to the commercial plant breeding and forage seed sector through increasing the germplasm options available to them for developing seed products. The Aberystwyth University Seed Biobank contains c. 3.3k accessions of perennial ryegrass seed in storage, of which c. 50% are wild, semi-natural or traditional cultivars/landraces. The majority of this latter group were actively collected between 1975 and 1995 from sites across the UK and Europe, by sampling pastures and other grasslands many of which are likely now to be no longer in existence in their original forms. This ex situ seed collection is a historical record of perennial ryegrass biology and will contain populations with allele and gene combinations which have not been directly selected for in developing modern, elite, fertiliser-responsive varieties and have never been formally evaluated in field environments relevant to UK agriculture. This is particularly significant as we seek to develop and enhance the capacity of UK grasslands to support livelihoods, a healthy, diverse and nature-rich environment and home-grown food production in the face of uncertain climatic and economic conditions going forward. In the knowledge that many in situ sources of grassland diversity have now disappeared and that the viability of ex situ seed collections diminishes over time, our programme will screen c. 200 wild/semi-natural perennial ryegrass accessions collected from the UK and Europe. Selection for screening will be made on the basis of seed viability, available seed quantity and geographical diversity. These 200 accessions will then be evaluated over a 3 year period in 1 m2 plots at 5 sites in Wales, encompassing an altitudinal gradient from c. 70-350m above sea level. The plots will be managed using lower fertiliser conditions and scored for above-ground biomass, ground cover, flowering time, disease incidence, rainfall infiltration, chemical composition (as an indicator of associated nutritive value), and invasion by other species.At the end of the programme, this field-generated phenotype information on individual accessions will be compiled and submitted to the public plant germplasm information resources EURISCO and Genesys PGR, as formal characterisation and evaluation datasets to accompany the existing accession entries.

该计划的愿望是增加有关在Aberystwyth种子生物库中拥有的相当多的植物遗传资源的现场性能信息，用于重要的饲料草，多年生黑麦草。这些信息对于草地，环境和农业科学家开发了了解性能和韧性的实验方法将很有用，并将为多年生黑麦草的遗传资源策略（即，以英国为注重的核心收集）的制定提供信息。该信息还将通过增加用于开发种子产品的种质选项，对商业植物育种和觅食种子行业有价值。 Aberystwyth University种子生物库包含c。 3.3k多年生黑麦草种子的储存中，其中c。 50％是野生，半自然或传统品种/陆地。后一组的大多数是在1975年至1995年之间从英国和欧洲各地积极收集的，通过对牧场和其他草原进行取样，其中许多现在很可能不再以其原始形式存在。此前种子收集是多年生黑麦草生物学的历史记录，将包含具有等位基因和基因组合的种群，这些人群尚未在开发现代，精英，肥料反应性的品种中被直接选择，并且从未在与英国农业相关的现场环境中进行正式评估。这尤其重要，因为我们试图发展和增强英国草原支持生计的能力，面对不确定的气候和经济状况，健康，多样化和自然丰富的环境以及本土的粮食生产。据知道，许多草地多样性的原位来源现在已经消失，并且随着时间的推移，原位种子收集的可行性会减少，我们的计划将筛选c。从英国和欧洲收集了200个野生/半自然的多年生黑麦草加入。筛查的选择将根据种子生存能力，可用种子数量和地理多样性进行。然后，将在威尔士5个地点的1平方米的3年期间评估这200个加入，其中包括C。海拔70-350m。该地块将使用较低的肥料条件进行管理，并为地上生物量，地面覆盖，开花时间，疾病的发生率，降雨渗透，化学成分（作为相关营养价值的指标）以及其他物种的入侵，并在程序结束时进行入侵。评估数据集伴随现有的加入条目。