Table 1 Growth of Medicago truncatula accessions after 12 days in pouches: impact of PEG treatment on biomasses and root architectural traits. For each accession, the impact of 8-days PEG treatment on each trait was expressed as a percentage relative to the untreated condition. Values are given in Additional file 1: Table S1. Negative and positive values indicate that PEG decreased or increased the value of the trait, respectively. ns means that impact of PEG treatment was not significant at the 0.05 probability level. The two selected and studied genotypes in the following experiments are highlighted in bold.
