Fig. 3. The effect of sequential application of high temperature treatments (HTTs) (4 d at 35°C) on the percent nuclei with a mitotic DNA content (3A), and on the percent nuclei with an endoreduplicating DNA content (3B). The mitotic DNA class was comprised of the 3 and 6 C DNA content classes. The endoreduplication DNA classes were compiled by adding the percent nuclei in the 12, 24, 48, and 96 C classes. Different letters indicate a significant difference of means, n = 6, LSD = 0.05.