Figure 1.
Initial seed mass in the three crop progenitors and six wild species.
The black bars show the mean seed mass of accessions used in experiment 1 and the white bars show those used in experiment 2 (+SE). Standard errors are not shown for experiment 1 because seeds were not weighed individually.
Figure 2.
Relationship between seed germination, seedling mass and seed mass.
Regression slopes for the relationship between (a) time to 50% of seeds germinated and seed mass (F1,7 = 5.55, P<.05, R2 = 0.44); and (b) seedling mass and seed mass, [experiment 1: circles (F1,7 = 120.156, P<.001, R2 = 0.9756), experiment 2: squares (F2,6 = 75.78, P<.001, R2 0.9619)] for the three crop progenitors (closed symbols) and six wild species (open symbols).
Figure 3.
Relationship between size standardised RGR (sRGR) and seed mass.
Regression slope for the relationship between sRGR and seed mass (F2,6 = 6.186, P<.05, R2 = 0.6734) for the three crop progenitors (closed symbols) and six wild species (open symbols).
Figure 4.
Relationship between sNAR, sSLA and sLMR and sRGR.
Regression slopes for the relationships between (a) sNAR and sRGR (F2,6 = 31.98, P<.001, R2 = 0.914); (b) sSLA and sRGR (F1,7 = 6.781, P<.05, R2 = 0.492); and (c) sLMR and sRGR for the three crop progenitors (closed symbols) and six wild species (open symbols).
Figure 5.
Impact of a defoliation treatment on plant survival, size and yield.
Impact of defoliation treatment on (a) survival (%), (b) plant height, (c) number of tillers, (d) number of seeds, and (e) potential yield in crop progenitors and wild species. The defoliation treatment is shown by the white bar and the control treatment (no defoliation) is shown by the black. Data are means + SE of 8 replicates.