This file contains trait values measured (1) on accessions and hybrid individuals of Arabidopsis thaliana, as well as (2) on a set of 334 plant species obtained from the study of Niklas and Enquist (PNAS 2001; 98: 2922-2927). These data are used in the article entitled Non-linear phenotypic variation uncovers the emergence of heterosis in Arabidopsis thaliana, published in 2019 by Vasseur and colleagues in PLOS Biology.
For A. thaliana data, traits were measured with the same protocol in two experiments that took place at the Max Planck Institute for Development Biology (Tbingen, Germany) between 2013 and 2015. idExp represents experiment identifier: GT01, which is the first experiment and which contains 451 accessions (n=2), and GT05, the second experiment which contains 450 hybrids (n=4) and 16 accessions (n=4). The GT01 experiment has also been described and analyzed by Vasseur and colleagues. (PNAS 2018; 115: 3416-3421).
Identifier numbers are 1001 Genomes identifiers (http://1001genomes.org/). Detailed protocol for trait measurement can be found in Image-based methods for phenotyping growth dynamics and fitness in Arabidopsis thaliana (Vasseur et al., Plant Methods 2018; 14: 63; https://doi.org/10.1101/208512). Units of traits measured: Age at reproduction: duration in days between the emergence of the first two leaves and the end of reproduction, when fruits are drying. FruitNumber: total number of fruits (siliques) per individual, measured at the end of reproduction. GrowthRate: Average growth rate (mg d-1), measured as the ratio of final rosette dry mass over age at reproduction. VegetativeDryMass: rosette dry mass (mg) measured at the growth inflection point (when growth rate is maximum), which was estimated by fitting a sigmoid growth curve on plant dry mass over time.