Fig. 3: Sex-determination model and the sex phenotypes and genotypes of 16 F1 seedlings.

a The sex-determination model of ZW sex chromosomes in red bayberry. The female-specific region (FSR) within the W chromosome is indicated in purple, the FSR flanking region is indicated in pink, and the autosomal region is indicated in green. b The genotypes of the parents are predicted to be W-b/Z (‘Biqi’) and W-d/Z (‘Dongkui-male’). The genotypes of the F1 progeny are segregated into four types: W-b/W-d, W-b/Z, W-d/Z, and Z/Z, and the corresponding individuals' sex phenotype are shown in photos