Extended Data Fig. 4: Seed abortion phenotype of hybrid seeds after haploid induction.

a, Phenotype images of mature seeds from outcrossing. Mature seeds from wild-type (Col-0) and GFP-tailswap pollinated with gl1 Ler pollen, respectively. Plants were grown at 22 °C and then transferred to 18 °C, 22 °C, and 25 °C just after hybridization. b, Proportion of different abortion levels of mature seeds resulting from the outcrossing described in (a). Mature seeds were collected, and divided into four groups: dark inviable seeds, wrinkled seeds (size < 1/2), wrinkled seeds (size > 1/2), and plump viable seeds.