Photosynthetica

, Volume 42, Issue 4, pp 585–590

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

Authors

    • Department of BiologyThe University of Memphis
  • S. R. Pezeshki
    • Department of BiologyThe University of Memphis
  • S. Goodwin
    • W. Harry Feinstone Center for Genomic ResearchThe University of Memphis
  • F. D. ShieldsJr.
    • USDA-ARS National Sedimentation Laboratory
Article

DOI: 10.1007/S11099-005-0017-y

Cite this article as:
Li, S., Pezeshki, S.R., Goodwin, S. et al. Photosynthetica (2004) 42: 585. doi:10.1007/S11099-005-0017-y

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 fluorescencedroughtfloodinggrowthphotosynthesisstomatal conductance

Copyright information

© Kluwer Academic Publishers 2004