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在母植物上的储存影响Rumex obtusifolius发芽期间的温度要求

Arvind Bhatt¹, Xingxing Chen¹, David J Gallacher²

¹Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China.

Plants (Basel, Switzerland)

|July 14, 2023

概括

在空中种子库中,Rumex obtusifolius的种子可保持长达10个月的生命力. 这些种子可靠地在不同温度下发芽,确保对土壤种子库的持续贡献.

科学领域:

植物生态学植物生态学
种子生物学种子生物学
杂草科学杂草科学

背景情况:

空中种子库对于植物种群的持续性至关重要,因为它们可以随着时间的推移延长种子的分散.
了解与空中种子库存储时间相关的种子发芽动态对于生态洞察至关重要.
Rumex obtusifolius是一种弹性杂草,使其种子库动态对农业和生态管理具有重要意义.

研究的目的:

研究温度和光线变化对存储在空中种子库中的Rumex obtusifolius种子发芽的影响.
为了确定空中种子库内种子生存能力和发芽能力的时间范围.
评估空中种子库对土壤种子库的贡献以及物种的杂草性.

主要方法:

在空中种子库中,Rumex obtusifolius的种子存储了0到10个月.
发芽试验是在受控的温度调节 (5/10°C至25/35°C) 和照明条件下进行的 (光/黑暗周期和持续的黑暗).
在整个储存期间评估了种子的生存能力和发芽率.

主要成果:

刚收获的Rumex obtusifolius种子显示出高发芽率 (高达92%) 并非休眠.
种子在经过测试的温度中可靠发芽,除了最低的温度 (5/10°C),这表明其具有广泛的热耐受性.
在空中种子库中,高种子活力保持了长达10个月,不受天气波动的影响.

结论:

在空中储存中,Rumex obtusifolius的种子可以长时间 (长达10个月) 保持生命力.
该物种在一年中始终为土壤种子库提供可行的种子,支持其持久性.
这种持续的种子输入增强了Rumex obtusifolius在乱的息地中的弹性,有助于其成为难以控制的杂草的地位.

关键词:

空中种子银行空中种子银行灯光灯光灯光灯光灯光种子的发芽种子的发芽种子呼吸种子呼吸温度的温度的温度的温度的温度.

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