木榄种源引种深圳湾后幼苗生理生态研究

A STUDY ON THE PHYSIOLOGICAL-ECOLOGY OF BRUGUIERA GYMNORHIZA SEEDLINGS AFTER INTRODUCED TO SHENZHEN BAY FROM DIFFERENT AREAS

将海南琼山、文昌、三亚 ,广西防城 ,雷州海康 ,廉江高桥及深圳福田本地的木榄胚轴 ,培育在深圳福田相同生境中 ,对其一龄幼苗的形态、生长和含水量、叶绿素、游离脯氨酸、过氧化氢酶、电导率、光合作用及蒸腾作用等生理指标进行定量分析 ,结果表明 :不同来源的幼苗存活率、地径生长和生理生态指标存在显著差异 ,其中高桥、琼山、三亚的种源存活率较高、生长较好 ;光合速率和蒸腾速率以琼山、三亚种源的较高 ;福田种源的过氧化氢酶活性最高 ,高桥种源的游离脯氨酸含量最高。结合深圳福田实际生境条件 ,应用坐标综合评定法 。

Different hypocotyls of Bruguiera gymnorhiza from Qiongshan, Sanya, Wenchang, Fangcheng, Haikang, Gaoqiao and Futian were collected and cultivated in the same ecological environment at Futian, Shenzhen. And a year later, the morphology growth and the physiological indexes such as water content, chlorophyll, free proline, catalase, electrical conductivity, photosynthesis, transpiration, etc. were analyzed. The results showed that there were significant differences in survival rate, basal diameter growth and physiological indexes among the seedings from different provenances. Of all provenances tested, Gaoqiao, Qiongshan and Sanya provenances were better; the photosynthetic rate and transpiration rate for Qiongshan and Sanya provenances were higher, and lowest for Gaoqiao provenance; the relative electrical conductivity for Sanya, Wenchang and Futian provenances was higher, and lower for Haikang and Fangcheng provenances; the catalase activity for Futian provenance was highest, and the content of free proline for Gaoqiao provenance was highest. The provenance of Bruguiera gymnorhiza from Gaoqiao was best to be introduced to Shenzhen Bay by a coordinate synthetic evaluation way according to Shenzhen Bay's ecological environment.