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Inhibitory effect of extracts from Eichhornia crassipes on the growth of Prorocentrum donghaiense
SHU Yang, LIU Zhen-qian, LI Li-jun
Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
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Abstract  

This study was undertaken to test inhibitory effect of extracts from Eichhornia crassipes on the growth of Prorocentrum donghaiense. The concentration of the extracts is indicated by the mass of fresh tissue of E. crassipes in the study. The results showed that the growth of P. donghaiense was strongly inhibited by the aqueous extracts from fresh tissue and dry powder of E. crassipes when concentration was above 2 g·L-1. When the concentration is 8 g·L-1, all algae were killed by the extracts from fresh tissue in four days and from dry power in five days. The inhibitory effect was not apparently reduced after extract from fresh tissue was autoclaved for 20 minutes at 121℃. These studies have shown that the algaecide chemicals of E. crassipes were in the tissue of the plant, they might be a potential candidate for HAB control.

Key wordsEichhornia crassipes      Prorocentrum donghaiense Lu      Antialgal activity      Allelopathy      HAB     
Received: 25 April 2006     
:  X55  
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SHU Yang
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LI Li-jun
Cite this article:   
SHU Yang,LIU Zhen-qian,LI Li-jun. Inhibitory effect of extracts from Eichhornia crassipes on the growth of Prorocentrum donghaiense[J]. , 2006, 25(2): 124-127.
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http://www.ecolsci.com/EN/     OR     http://www.ecolsci.com/EN/Y2006/V25/I2/124
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