Figure 2.
Relative siring success of pollen from diploid (dark bars) and tetraploid (light bars) C. angustifolium for four different mixed-ploidy crosses (e.g. in 2x × (2x + 4x), 2x refers to ploidy of maternal plant; 2x + 4x refers to pollen parent). Tetraploids are either established tetraploids (4xest) or neotetraploids (4xneo). (a) and (b) depict observed and expected (random) siring rates, respectively, based on the raw distribution of ploidy in seeds. (c)and (d) depict observed and expected siring rates after correction for differences in mortality of 2x, 3x and 4x embryos.