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Trinexapac-ethyl and Paclobutrazol Affect Kentucky Bluegrass Single-Leaf Carbon Exchange Rates and Plant Growth

Dep. of Natural Resources and Environmental Sciences, Univ. of Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801

View larger version (20K): [in this window] [in a new window]   Fig. 1. Plant height for the first and second experimental runs of trinexapac-ethyl– and paclobutrazol-treated Kentucky bluegrass maintained at two temperature regimes (23/18 or 30/25°C) for 56 d after treatment. Data were analyzed using raw plant heights but plotted as a percentage of control. FLSD, < 0.05, were calculated to compare treatments within the same day as well as treatments across time. The line at the 100% represents the control.

View larger version (22K): [in this window] [in a new window]   Fig. 2. Single-leaf carbon exchange rates for the first and second experimental runs of trinexapac-ethyl– and paclobutrazol-treated Kentucky bluegrass maintained at two temperature regimes (23/18 or 30/25 C) for 44 d after treatment. FLSD, < 0.05, were calculated to compare treatments within the same day as well as treatments across time.

View larger version (21K): [in this window] [in a new window]   Fig. 3. Stomatal conductances of the first and second experimental runs of trinexapac-ethyl– and paclobutrazol-treated Kentucky bluegrass maintained at two temperature regimes (23/18 or 30/25°C) for 44 d after treatment. FLSD, < 0.05, were calculated to compare treatments within the same day as well as treatments across time.