Effects of Light Quality and Daminozide (B9) on Ornamental and Physiological Characteristics of Rhododendron simsii ‘Pinghua‘ Inducing effect of total flavones in rhododendra on endothelium-derived hyperpolarizing factor responses in cerebral basilar artery of rats subjected to global cerebral ischemia reperfusion Inducing effect of total flavones in rhododendra on endothelium-derived hyperpolarizing factor responses in cerebral basilar artery of rats subjected to global cerebral ischemia reperfusion THE EFFECTS OF HIGH-pH AND IRON ON ROOT Fe~(3+) REDUCTASE ACTIVITY OF Rhododendron mucronatum AND Rhododendron simsii Phylogeographic analysis and environmental niche modeling of widespread shrub Rhododendron simsii in China reveals multiple glacial refugia during the last glacial maximum