Endogenous BR levels of control, YCZ-18 and Brz-treated Arabidopsis (ng/g fw).

*nd: not detected (below detection limit)Endogenous BR levels of control, YCZ-18 and Brz-treated Arabidopsis (ng/g fw).*nd：未检出（低于检测下限）。对照组、YCZ-18处理组与油菜素唑（Brassinazole, Brz）处理组拟南芥的内源油菜素内酯（Brassinosteroid, BR）水平，单位为ng/g 鲜重（fresh weight, fw）。