Study of the Cold-Resistant Adaptability of Rhododendron fortunei during a Natural Drop in Temperature——The Relationship Between the Dynamic Changes of Water Content and Osmoregulation Substances and the Semilethal Low Temperature
The result showed that the relative moisture,free moisture and starch contents of leaf decreased,and the bound moisture,soluble sugar,soluble protein and proline contents increased with a drop in low semi-lethal temperature.The adaptability changes of these substrates led to a drop in low semi-lethal temperature,which was the physiological basis for increasing the cold-resistant adaptability.