Data from: The triangular seed mass-leaf area relationship holds for annual plants and is determined by habitat productivity

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.

植物异速生长关系（allometry）有助于我们理解植物的资源分配策略，并为群落结构的形成机制提供重要见解。对于木本植物而言，种子大小与叶大小之间存在三角异速生长关系，除了具备大种子和小叶片的物种外，所有组合均可能存在（Cornelissen, 1999）。该关系被认为是生境间非生物条件差异所导致的结果。
本研究旨在验证种子质量与叶面积之间的三角异速生长关系是否同样适用于一年生植物，同时探究土壤生产力与光照（以埃伦贝格指示值（Ellenberg indicator values, EIVs）量化）是否为该关系的驱动因素。
研究结果表明，三角异速生长关系在一年生植物中同样成立，这意味着叶面积与种子质量之间的异速生长组合模式在不同生活型植物中具有保守性。该三角关系主要由生境间的土壤生产力差异所驱动。
这意味着随着土壤生产力提升，拥有大叶片的植物既可以搭配大种子，也可以搭配小种子。而在低土壤生产力生境中，植物的资源分配策略受到限制：仅拥有小叶片的植物才能产生小种子。