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Dormancy and germination: making every seed count in restoration
Restoration Ecology ( IF 3.2 ) Pub Date : 2020-03-13 , DOI: 10.1111/rec.13140
Olga A. Kildisheva 1 , Kingsley W. Dixon 2 , Fernando A. O. Silveira 3 , Ted Chapman 4 , Alice Di Sacco 4 , Andrea Mondoni 5 , Shane R. Turner 2, 6, 7 , Adam T. Cross 2
Affiliation  

From 50 to 90% of wild plant species worldwide produce seeds that are dormant upon maturity, with specific dormancy traits driven by species' occurrence geography, growth form, and genetic factors. While dormancy is a beneficial adaptation for intact natural systems, it can limit plant recruitment in restoration scenarios because seeds may take several seasons to lose dormancy and consequently show low or erratic germination. During this time, seed predation, weed competition, soil erosion, and seed viability loss can lead to plant re‐establishment failure. Understanding and considering seed dormancy and germination traits in restoration planning are thus critical to ensuring effective seed management and seed use efficiency. There are five known dormancy classes (physiological, physical, combinational, morphological, and morphophysiological), each requiring specific cues to alleviate dormancy and enable germination. The dormancy status of a seed can be determined through a series of simple steps that account for initial seed quality and assess germination across a range of environmental conditions. In this article, we outline the steps of the dormancy classification process and the various corresponding methodologies for ex situ dormancy alleviation. We also highlight the importance of record‐keeping and reporting of seed accession information (e.g. geographic coordinates of the seed collection location, cleaning and quality information, storage conditions, and dormancy testing data) to ensure that these factors are adequately considered in restoration planning.

中文翻译:

休眠和发芽:使每一粒种子都恢复原状

全世界50%至90%的野生植物产生的种子在成熟后就处于休眠状态,其特定的休眠特性受物种的发生地理,生长形式和遗传因素驱动。虽然休眠是对完整自然系统的有益适应,但它可能会限制恢复场景中的植物募集,因为种子可能​​需要几个季节才能失去休眠,因此发芽率低或不稳定。在这段时间内,种子捕食,杂草竞争,土壤侵蚀和种子生存力丧失可能导致植株重建失败。因此,在恢复计划中理解和考虑种子休眠和发芽特性对于确保有效的种子管理和种子使用效率至关重要。有五种已知的休眠类别(生理,物理,组合,形态和形态生理),每个都需要特定的提示来减轻休眠并实现发芽。种子的休眠状态可以通过一系列简单的步骤来确定,这些步骤考虑了种子的初始质量并评估了各种环境条件下的发芽情况。在本文中,我们概述了休眠分类过程的步骤以及用于异地缓解休眠的各种相应方法。我们还强调了保存和报告种子入藏信息(例如种子收集地点的地理坐标,清洁和质量信息,存储条件以及休眠测试数据)的重要性,以确保在恢复计划中充分考虑这些因素。种子的休眠状态可以通过一系列简单的步骤来确定,这些步骤考虑了种子的初始质量并评估了各种环境条件下的发芽情况。在本文中,我们概述了休眠分类过程的步骤以及用于异地缓解休眠的各种相应方法。我们还强调了保存和报告种子入藏信息(例如种子收集地点的地理坐标,清洁和质量信息,存储条件以及休眠测试数据)的重要性,以确保在恢复计划中充分考虑这些因素。种子的休眠状态可以通过一系列简单的步骤来确定,这些步骤考虑了种子的初始质量并评估了各种环境条件下的发芽情况。在本文中,我们概述了休眠分类过程的步骤以及用于异地缓解休眠的各种相应方法。我们还强调了保存和报告种子入藏信息(例如种子收集地点的地理坐标,清洁和质量信息,存储条件以及休眠测试数据)的重要性,以确保在恢复计划中充分考虑这些因素。我们概述了休眠分类过程的步骤以及异地缓解休眠的各种相应方法。我们还强调了保存和报告种子入藏信息(例如种子收集地点的地理坐标,清洁和质量信息,存储条件以及休眠测试数据)的重要性,以确保在恢复计划中充分考虑这些因素。我们概述了休眠分类过程的步骤以及异地缓解休眠的各种相应方法。我们还强调了保存和报告种质信息(例如种子收集地点的地理坐标,清洁和质量信息,储存条件以及休眠测试数据)的重要性,以确保在恢复计划中充分考虑这些因素。
更新日期:2020-03-13
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