Photosynthetica

, 49:478

Leaf area expansion and net photosynthetic rate of three bromegrass (Bromus) species

Authors

  • B. Biligetu
    • Semiarid Prairie Agricultural Research CentreAgriculture and Agri-Food Canada
    • Department of Plant SciencesUniversity of Saskatchewan
Brief Communication

DOI: 10.1007/s11099-011-0049-4

Cite this article as:
Biligetu, B. & Coulman, B. Photosynthetica (2011) 49: 478. doi:10.1007/s11099-011-0049-4

Abstract

This study measured individual leaf area expansion rate and leaf net photosynthetic rate (P N) of meadow bromegrass (Bromus riparius Rehm.), smooth bromegrass (Bromus inermis Leyss.) and hybrid bromegrass (B. riparius × B. inermis). Smooth bromegrass expanded individual leaf area 1.5 times faster than meadow bromegrass and hybrid bromegrass. P N was highest in smooth bromegrass, intermediate in hybrid bromegrass, and lowest in meadow bromegrass. Rapid growth of meadow bromegrass following defoliation compared to smooth bromegrass and hybrid bromegrass could not be explained by higher rates of these measured characteristics.

Additional key words

bromegrass forage regrowth

Abbreviations

g s

stomatal conductance

N

nitrogen

P N

net photosynthetic rate

PAR

photosynthetically active radiation

WUE

water-use efficiency

Copyright information

© Springer Science+Business Media B.V. 2011