Growth, photosynthesis, and ion distribution in hydroponically cultured Populus alba L. cuttings grown under various salinity concentrations

Hui Ping Mao, Fumiko Iwanaga, Norikazu Yamanaka, Fukuju Yamamoto

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Growth, photosynthesis, and Na+, K+, and Ca 2+ distributions were investigated in 2-year-old hydroponically cultured Populus alba L. cuttings exposed to salt stresses (0, 0.85, 8.5, 17, and 85 mM NaCl in experiment 1 and 0, 50, 100, 150, and 200 mM in experiment 2) for 4 weeks in 2/5 Hoagland solution. Salt did not markedly inhibit height growth and diameter increment in 150 and 100 mM NaCl, respectively. The 85 mM NaCl treatment increased the dry weights of roots and total dry weight of plants, while 150 mM NaCl significantly reduced the dry weights of leaves, stems, and total plant weight. The decline in the photosynthetic rate lagged 2 weeks behind that of stomatal conductance in the 50 and 100 mM salt solutions. Different ions exhibited different distributions in different parts of the plant. Most Na+ ions were excluded and/or compartmentalized in roots at low and moderate salt stress (≤50 mM). K+ content in leaves increased with the increase in the salt concentration in the growth solutions.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalLandscape and Ecological Engineering
Volume4
Issue number2
DOIs
Publication statusPublished - Nov 1 2008

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photosynthesis
salt
salinity
ion
stomatal conductance
experiment
distribution
cutting (process)
stem

All Science Journal Classification (ASJC) codes

  • Ecology
  • Nature and Landscape Conservation
  • Management, Monitoring, Policy and Law

Cite this

Growth, photosynthesis, and ion distribution in hydroponically cultured Populus alba L. cuttings grown under various salinity concentrations. / Mao, Hui Ping; Iwanaga, Fumiko; Yamanaka, Norikazu; Yamamoto, Fukuju.

In: Landscape and Ecological Engineering, Vol. 4, No. 2, 01.11.2008, p. 75-82.

Research output: Contribution to journalArticle

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