Fig. 4From: Embryological observations on seed abortion in Hibiscus syriacus L. and physiological studies on nutrients, enzyme activity and endogenous hormonesProtein, soluble sugar, and starch contents during seed development in H. syriacus. Bars and error bars indicate the mean ± standard errors (n = 3). I, proto-embryonic, 5–8 DAP; II, spherical embryo, 9–10 DAP; III, heart-shaped embryo, 11–12 DAP; IV, torpedo-shaped embryo, 13–17 DAP; V, cotyledon embryo, 18–20 DAP; VI, mature embryo I, 30 DAP; VII, mature embryo II, 40 DAP; VIII, mature embryo III, 50 DAP; IX, mature embryo IV, 60 DAP.Back to article page