4种棕榈科植物在厦门越冬的生理指标比较

Comparative study of physiological indices of four palm species during winter in Xiamen

2004年10月至2005年1月,测定了4种棕榈科Plamae植物蝴蝶椰子Chrysalidocarpuslucubensis,油棕Elaeis guineensis,山棕榈Trachycarpus martianus和加拿利海枣Phoenixcanariensis在厦门越冬期间叶片的电导率、自由水/束缚水比值、叶绿素质量分数及叶绿素a/b值等生理指标。综合比较各指标可得4种棕榈科植物的抗寒性顺序为:加拿利海枣>蝴蝶椰子和山棕榈>油棕。

To study the low temperature tolerance of four palm species, the electrical conductivity, the ratio of free water/bound water, the chlorophyll contents and the ratio of chlorophyll a/b of their leaves were measured during winter （from 2004 Oct. to 2005 Jan. ） in Xiamen City. The results showed that the low temperature tolerance from high to low are as follows： Phoenix canariensis 〉 Chrysalidocarpus lucubensis 〉 Trachycarpus martianus 〉 Elaeis guineensis.