FIGURE 7.

GA and IAA concentration in hypocotyls and epicotyls under two different temperatures. Hypocotyls and epicotyls of tomato seedlings grown for 7 days under control and high temperatures were harvested and subjected to hormone analysis. The concentrations of GAs (A–J) and IAA (K) were quantified using liquid chromatography-tandem mass spectrometry. Data are represented as mean ± SD (n = 4 or 5). *P < 0.1; ***P < 0.01 (Student’s t test). GA₇ and GA₁₂ were below the quantification limit. CT, control temperature; HT, high temperature; FW, fresh weight; UQ, under quantification limit.