Figure 1

Dose effects of EMS mutagenesis in A. thaliana M ₁ L er plants. A) Frequency of M₁ seed germination. B) Frequency of M₁ albino chimeras at vegetative stage. C) Frequency of sterility, embryo lethality and fertility measured as the percentage of different fruit classes. Fruits of M₁ plants are classified as As, Aa, B and C (from fully sterile to nearly normal fertility) depending on the proportion of aborted seeds (see Methods for details). Data are mean ± SE of three to six replicates. Untreated control plants showed 100% germination, 0% albino chimeras and 0, 3 and 97% of A, B and C fruit classes.