Fig. 4.

Germination of seeds from flowering time variants (early, intermediate and late) of Capsella bursa-pastoris (shepherd's purse): (A) during incubation in the dark at 25 °C (scored after 18 d); and (B, C) after transfer from dark incubation (secondary dormancy induced) to alternating day/night temperature regimes of 25/10 °C and white light in: (B) water or (C) 10 mm KNO₃. Myxospermous and non-myxospermous seeds as indicated. Data are means ± s.e., n ≥ 3 genotypes, i = 3 plant replicates per genotype.