The study of some phenotype and physiological characteristic of water hyacinth Eichhornia crassipes (Mart.) Solms-Laubach on different regions of Thi-qar governorate

Abstract

   The plant of water hyacinth Eichhornia crassipesis an abundant floating aquatic weed that has great potential for reproduction in Iraq especially at Thi-Qar governorateat last years, So the study was conducted on plant at three different regions to know the differences on some phenotypic characters are ( plant high , root longs , number of leaves , leaf area and the fresh and the dry weights of leaves ) . The results were revealed a clear difference at plant high , root longs , number of leaves , leaf area , fresh and dry weights of plant shoots , also concentrations of chlorophyll , carotenoids , carbohydrates and proteins  were estimated . It was found that a clear difference on the concentrations of the components that  were studied .   The ability of plant for extraction and accumulation of some heavy metals  ( Pb , Cd , Cu , Zn and Mn ) and its concentrations on plant tissues , water and soils were studied . The results were showing that , concentrations of heavy metals ranged between( 0.32 – 25.24 ) mg / gm on the plant tissues , whereas ranged between ( 0.09 – 2.40) mg /l on water and ranged betwee ( 0.53 – 26.66 ) mg / gm on plant soil . From the results , it was noticed that , the high concentration of lead and the low concentration of cadmium .