Effects of Soaking Seeds with Trinexapac-ethyl on Growthand Physiological Characters of Perennial Ryegrass

doi:10.11924/j.issn.1000-6850.2013-2627

Abstract

Abstract: A pot experiment was conducted to explore the application of trinexapac- ethyl (TE) on turfgrass seedling. The effects of soaking seed with five concentrations of TE on the seeding rate, growth and physiological characters of the perennial ryegrass cultivar‘Derbby’were investigated. The results showed that: 50-150μL/L range soaking treatment reduced the emergence speed, but had no significant effects on the final seeding rate; It lowered the growth rate significantly and had remarkable effects on the turf quality within 50- 200μL/L. Treated with concentrations 100, 150, 200μL/L,‘Derbby’seedlings’chlorophyll content increased, MDA content dropped and POD, CAT and APX activity increased. TE soaking improved the quality of perennial ryegrass seedlings and enhanced plant resistance.

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