Effect of Trinexapac-ethyl on Kentucky Bluegrass Root Morphology. (C05-beasley606085-oral)
Authors:
J.S. Beasley* - Univ. of Illinois B.E. Branham - Univ. of Illinois
Abstract:
The effect of plant growth regulators (PGRs) on turfgrass leaf morphology has been well reported. In contrast, reports concerning root morphology as a result of PGRs applications are lacking. We examined the effects of trinexapac-ethyl on Kentucky bluegrass (Poa pratensis) root morphology.
Individual Kentucky bluegrass plants were grown in hydroponic culture using a modified Hoagland nutrient solution. Three weeks after introduction in hydroponics, one-half of the plants were treated with 0.22 kg ai/ha trinexapac-ethyl while the remaining served as controls. Plants were harvested weekly for eight weeks. Roots were scanned and analyzed using the WinRhizo program to determine total root length, average diameter, and total surface area. Other measurements included tiller and rhizome number as well as shoot and root dry weights.
Speaker Information: Jeffrey Beasley, Univ. of Illinois, University of Illinois 1102 South Goodwin Avenue , Urbana, IL 61801; Phone: 217-333-5591; E-mail: [email protected]
Session Information: Thursday, November 6, 2003, 7:55 AM-10:00 AM Presentation Start: 8:00 AM
