The triangular seed mass–leaf area relationship holds for annual plants and is determined by habitat productivity
The triangular seed mass–leaf area relationship holds for annual plants and is determined by habitat productivity
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三角形种子质量-叶面积关系适用于一年生植物，并由栖息地生产力决定
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Rees
中科院分区：
文献类型：
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作者：
Bianca A. Santini;John G. Hodgson;K. Thompson;P. Wilson;S. R. Band;G. Jones;Mike Charles;A. Bogaard;C. Palmer;M. Rees
总结
植物异速生长帮助我们了解植物中的资源分配，并提供对群落结构的深入了解。对于木本物种，种子大小和叶大小之间存在三角形异速生长关系，其中所有组合都是可能的，除了种子大而叶小的物种（Cornelissen 1999）。这种关系被认为是非生物条件下栖息地变化的结果。
在这项研究中，我们测试了种子质量和叶面积之间的三角关系是否适用于一年生物种，以及土壤生产力和光照（以Ellenberg指标值测量：EIVs）的变化是否驱动了这种关系。
我们发现，三角关系也适用于一年生植物，这表明叶面积和种子质量之间的异速生长组合是保守的生活型。三角关系是由土壤生产力的栖息地之间的变化。
这意味着随着土壤生产力的增加，叶子较大的植物可能会有大或小的种子。然而，在土壤生产力低的生境中，植物的选择受到限制，叶子小的植物只能有小种子。
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Summary
Plant allometries help us to understand resource allocation in plants and provide insight into how communities are structured. For woody species, a triangular allometric relationship between seed size and leaf size occurs in which all combinations are all possible, except for species with big seeds and small leaves (Cornelissen 1999). This relationship is thought to be a consequence of between habitat variation in abiotic conditions.
In this study, we tested if the triangular relationship between seed mass and leaf area holds for annual species, and if variation in soil productivity and light (measured as Ellenberg indicator values: EIVs) are driving this relationship.
We show that the triangular relationship also holds for annuals, which suggests that the allometric combinations between leaf area and seed mass are conserved across life-forms. The triangular relationship was driven by between-habitat variation in soil productivity.
This means that as soil productivity increases, plants with bigger leaves could have either big or small seeds. However, in low soil productivity habitats, plants are constrained in their options, and plants with small leaves can only have small seeds.
This article is protected by copyright. All rights reserved.