Fig. 4.

Germination and ethylene production of wounded dormant (D) dehulled red rice caryopses imbibed in water or in the presence of the ethylene precursor ACC. Dry caryopses were cut transversally before imbibition of the half-seed with embryo (time 0); pre-imbibed caryopses were wounded by longitudinal cutting (at time 0), after 3–4 d of pre-incubation. (A) Pericarp splitting (first visible stage of germination), (B) seedling growth stage S1, (C) rate of ethylene emission. Standard errors between independent experiments are shown (n = 2).