To evaluate chronological trend in damage of salinity on coastal forest species, we monitored transition of damages in Machilus thunbergii, Pinus densiflora and P. thunbergii saplings for three months after see water immersion for 24 hours. The damage was evaluated from discolored-leaves rate by visual observation, and physiological observation using sap flow and chlorophyll fluorescence. Salinity damage appeared dramatically in M. thunbergii, saplings were discolored 1 days later and died 18 days later. P. densiflira saplings were partly discolored within 18 days and most leaves were discolored 38 days later. P. thunbergii, on the other hand, more than 60% of leaves were undamaged at the end of experiments. Physiological parameters indicated damages prior to visual observation in all species. P. thunbergii showed trend of recovery in sap flow and chlorophyll Fluorescence, however, it was not observed visually.
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.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.