Fig. 1

Observation and measurement of the development of tartary buckwheat seeds. a Five stages of tartary buckwheat seeds development. Top row shows each longitudinal sections of tartary buckwheat seeds at different developmental stages. Second row shows individual seeds at different developmental stages. Third row shows schematic representation of developmental stages studied during tartary buckwheat seed ontogeny. 13 DPA: Tartary buckwheat seed at green fruit stage for transcriptome experiment; 19 DPA: Tartary buckwheat seed at discoloration stage for transcriptome experiment; 25 DPA: Tartary buckwheat seed at initial maturity stage for transcriptome experiment. DPA, days-post-anthesis. b The seed size and weight at different developmental stages. Error bars were obtained from five measurements. Small letter(s) above the bars indicate significant differences (α = 0.05, LSD) among treatments