Study on the Relationship between Propagule Characteristics and Reproductive Dispersal of Viviparous Mangrove Plants
To explore the relationship between propagule characteristics and reproductive dispersal of vivipa-rous mangrove plants,the mass,length,volume and density of propagules of three most common viviparous mangrove plants in China,Avicennia marina,Aegiceras corniculatum and Bruguiera gymnorhiza,were ana-lyzed and compared,and their floating and germination status under different salinity conditions were ex-plored by indoor floating and propagule germination experiments.The results showed that the propagule density of the three mangrove species was slightly less than 1.000 g/cm.Under different salinity conditions,the floating ability of Avicennia marina propagules was significantly different,the germination rate was high and the germination time was much earlier than that of B.gymnorrhiza.However,the propagules of Ae-giceras corniculatum had sinking and poor floating ability,and some propagules of Aegiceras corniculatum only grew roots after the experiment ended.B.gymnorhiza propagules,on the other hand,exhibited excel-lent floating ability(floating rate＞85％)and had a higher germination rate under low salinity conditions.The above shows that the strong adaptability of Avicennia marina propagules and the strong floating ability of B.gymnorrhiza propagules provide a foundational support for its widespread distribution.The character-istics of the propagules of viviparous mangrove plants,such as their own morphology,floating ability and germination status,have a great effect on their reproduction and establishment.This study helps to explain the reproductive dispersal of mangrove plants,which is of great significance for the protection and restoration of mangrove forests.
mangrovemangrove plantviviparousfloating ratereproduction and establishment
万方数据
维普
