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

该方案的目标是增加阿伯里斯特威斯种子生物库中保存的关于重要牧草-多年生黑麦草-的大量植物遗传资源的田间表现的现有信息。这些信息将有助于草地，环境和农业科学家制定实验方法来了解性能和适应力，并将为多年生黑麦草遗传资源战略的制定提供信息，即，以英国为中心的核心收藏这一信息也将是宝贵的商业植物育种和饲料种子部门，通过增加种质选择，他们开发种子产品。阿伯里斯特威斯大学种子生物库含有c。3.3k份多年生黑麦草种子贮藏材料，其中c. 50%为野生、半天然或传统品种/地方品种。后一组中的大多数是在1975年至1995年期间从英国和欧洲各地的地点积极收集的，通过对牧场和其他草原进行采样，其中许多草原现在可能不再以原始形式存在。这种异地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，这些等位基因和基因组合尚未直接选择用于开发现代，精英，肥料响应品种，并且从未在与英国农业相关的田间环境中进行过正式评估。这一点尤其重要，因为我们寻求发展和提高英国草原的能力，以支持生计，健康，多样和自然丰富的环境和本土粮食生产，面对未来不确定的气候和经济条件。在了解到许多草地多样性的原地来源现在已经消失，迁地种子收集的可行性随着时间的推移而减少，我们的计划将筛选c。从英国和欧洲收集的200份野生/半天然多年生黑麦草种质。将根据种子活力、可用种子数量和地理多样性进行筛选。这200加入，然后将在3年内在1平方米的地块在5个地点在威尔士，包括海拔梯度从c。海拔70- 350米。这些地块将使用较低的肥料条件进行管理，并对地上生物量，地面覆盖物，开花时间，疾病发生率，降雨渗透，化学成分进行评分（作为相关营养价值的指标），以及其他物种的入侵。在节目结束时，这个领域-生成的个体种质表型信息将被汇编并提交给公共植物种质信息资源EURISCO，Genesys PCR作为正式表征和评价数据集，与现有登录条目一起使用。

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.