Levels of ACC in developing stamens of wild type and jai1-1. Stamens of the respective stages were extracted and content of ACC was determined. Mean values ± SD are shown. Data of the same developmental stage were compared between wild type and jai1-1 by Student’s t-test (* P ≤0.05, n = 4). ACC, 1-aminocyclopropane-1-carboxylic acid; SD, standard deviation.