Photosynthetica

, Volume 42, Issue 4, pp 585–590 | Cite as

Physiological responses of black willow (Salix nigra) cuttings to a range of soil moisture regimes

  • S. Li
  • S. R. Pezeshki
  • S. Goodwin
  • F. D. ShieldsJr.
Article

Abstract

We quantified the physiological responses of black willow to four soil moisture regimes: no flooding (control, C), continuous flooding (CF), periodic flooding (PF), and periodic drought (PD). Stomatal limitation was one of the factors that led to the reduced photosynthetic capacity in CF cuttings. Under PD, stomatal closure, decreased leaf chlorophyll content, and increased dark fluorescence yield contributed to photosynthetic decline. CF cuttings accumulated the lowest shoot biomass while the final height and root growth were most adversely affected by PD. PF cuttings tended to allocate more photoassimilates to root growth than to shoots.

Additional key words

chlorophyll a fluorescence drought flooding growth photosynthesis stomatal conductance 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • S. Li
    • 1
  • S. R. Pezeshki
    • 1
  • S. Goodwin
    • 2
  • F. D. ShieldsJr.
    • 3
  1. 1.Department of BiologyThe University of MemphisMemphisUSA
  2. 2.W. Harry Feinstone Center for Genomic ResearchThe University of MemphisMemphisUSA
  3. 3.USDA-ARS National Sedimentation LaboratoryOxfordUSA

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