Developmental time courses of the levels of extractable MVT (A) and of thiamin and its phosphorylated forms (B) in male flower tissue of cv ‘Tapestry’. Data are means and SE of three biological replicates. Tissue was harvested 1, 3, and 10 d before female anthesis, on day 0 (female anthesis), and 1 d after female anthesis. The day 0 harvest was at 20:30, when the MVT emission burst was in progress. ThDP, thiamin diphosphate; ThMP, thiamin monophosphate.