YAMANAKA, Norikazu, TANIGUCHI, Shingo: Growth and ion accumulation of Avicennia marina and Kandelia obovata seedlings grown under hydroponic culture with different salinity. Abstract: Growth, survival rate, Na + and leaf betaine concentration were investigated on Avicennia marina and Kandelia obovata seedlings grown in hydroponic culture with different salinity for 1-month.Survival rate and biomass of both species did not differ with salinity.In K.obovata seedlings, Na + concentration in root increased significantly by 4% salt treatment, and ratio of Na + to K + increased in hypocotyl and root.In A.marina seedlings, Na + concentration and ratio of Na + to K + in every plant part increased significantly by 2-4% salt treatment.Leaf alanin betaine (AB) concentration did not differ with salt treatment, whereas glycine betaine (GB) concentration in K.obovata and A.marina increased with increase in salt treatment.
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