Hierarchical clustering of antioxidant gene expression in the flowers of three grape cultivars following GA₃ treatment.

<p>Results of semi-quantitative RT-PCR assays were quantified using GeneTools software, and log-transformed values of the relative expression levels of genes encoding antioxidant enzymes following GA₃ treatment compared to untreated controls were used for hierarchical cluster analysis. The color scale represents relative expression levels with red denoting up-regulation and green denoting down-regulation. Sampling times are indicated at the top of the figure; F represents floral tissue; K represents the ‘Kyoho’ cultivar; R represents the ‘Red Globe’ cultivar; T represents the ‘Thompson seedless’ cultivar.