Fig. 1.

Germination of A. fatua caryopses. Caryopses were incubated in the presence of KAR₁ at 20 °C for 30 h. Caryopsis: ungerminated (a), with coat rupture (b), with coleorhiza penetrating the coat (c), with radicle penetrating the coleorhizae (d). These three stages (Fig. 2) or last stage (Table 3; Fig. 5) was determined