Effects of irregular saltwater submergence on taxodium distichum seedlings

Fumiko Iwanaga, Makiko Hirazawa, Takahiro Takeuchi, Fukuju Yamamoto

Research output: Contribution to journalArticle

Abstract

The growth response and photosynthetic activity of Taxodium distichum in relation to the leaf and root Na + content was assessed with the use of 2-year-old seedlings submerged in saline. Seedlings were submerged in water containing 0, 4000, and 8000 ppm NaCl during May, July, and September, respectively. Submergence and soil flooding with fresh water (control) did not inhibit vertical or lateral seedling growth. No morphological changes were observed during submergence in salt water; however, in July and September, leaf injury and shoot dieback were observed in the drained seedlings. Saline submergence in July and September inhibited photosynthesis and decreased the leaf and stem biomass but did not affect the root biomass. The seedling Na + and K + ion contents increased with increases in salt concentration; however, in May, the ion contents did not increase significantly. Such seasonal differences in ion content might lead to variations in the extent of leaf damage and growth inhibition after saline submergence in T. distichum seedlings.

Original languageEnglish
Pages (from-to)193-198
Number of pages6
JournalJournal of Coastal Research
Volume27
Issue number6 A
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

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submergence
seedling
ion
dieback
biomass
salt water
growth response
effect
photosynthesis
flooding
shoot
stem
salt
water
damage
soil

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Earth-Surface Processes
  • Ecology

Cite this

Effects of irregular saltwater submergence on taxodium distichum seedlings. / Iwanaga, Fumiko; Hirazawa, Makiko; Takeuchi, Takahiro; Yamamoto, Fukuju.

In: Journal of Coastal Research, Vol. 27, No. 6 A, 11.2011, p. 193-198.

Research output: Contribution to journalArticle

Iwanaga, Fumiko ; Hirazawa, Makiko ; Takeuchi, Takahiro ; Yamamoto, Fukuju. / Effects of irregular saltwater submergence on taxodium distichum seedlings. In: Journal of Coastal Research. 2011 ; Vol. 27, No. 6 A. pp. 193-198.
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