Seed life span and food security
Seed life span and food security
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DOI：
10.1111/nph.16006
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发表时间：
2019-07-05
期刊：
影响因子：
9.4
通讯作者：
Pritchard, Hugh W.
中科院分区：
文献类型：
--
作者：
Colville, Louise;Pritchard, Hugh W.
人们对多种脊椎动物和成年植物中寿命的种间分布有很多了解，但对种子却不了解，然而种子寿命的功能特性是全球农业、植物物种保护和种子在土壤中持久性的基础。我们收集了五种储存条件的数据（土壤种子库;高温-高湿加速老化;温和，凉爽，露天储存;凉爽，干燥，冰箱;和寒冷，干燥，冷冻）;并分析了作物和野生物种中正统种子寿命的分布。在所有情况下，无论是土壤种子库中已知的最大原位寿命（417种），还是异地半衰期（P50）（732种），分布都是右偏的。发现> 50%的物种的种子可能有寿命
Much is known about the inter-specific distribution of life span in a wide diversity of vertebrates and in adult plants, but not for seeds, yet the functional trait seed life span underpins global agriculture, plant species conservation and seed persistence in the soil. We sourced data for five storage conditions (soil seed bank; high temperature - high humidity accelerated ageing; temperate, cooler, open storage; cool, dry, refrigerator; and cold, dry, freezer); and analysed the distribution of orthodox seed life span amongst crop and wild species. In all cases, whether for maximum known in situ life span in the soil seed bank (417 species), or for half-lives (P50s) ex situ (732 species), the distribution is right-skewed. The finding that seeds of > 50% of species are likely to have life spans