Fig. 4.

Per-seed weight of R. nudiflora under field experimental conditions to assess the effect of two treatments: shade (shaded vs. open) and water supplementation (watered vs. non-watered) on biomass allocation to three different structures: cleistogamous fruit (CL Fruit), chasmogamous fruit (CH Fruit) and chasmogamous fruit supplemented with allogamous pollen (CHS Fruit). The bars show the mean ± s.e. Per-seed weight was statistically different among structures, and the interaction treatment × structure was also significant.