Plant growth regulation in seed crops of perennial ryegrass (Lolium perenne L).

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Seed yield components were recorded in plants of perennial ryegrass cv. Calibra a medium late, forage type (4n) in a two factorial block design with Nitrogen (N) and plant growth regulator (PGR) application in 2014 and 2015 at Aarhus University (AU), Flakkebjerg. For each plant, reproductive tillers were categorized into three groups (T1-T3) according to time of development. N increased the number of reproductive tillers and the number of florets per tiller in both years, except for the early developed tillers (T1) in 2015. N increased the number of seeds per spikelet in 2014.
The results show the potential for increasing seed yield by increasing the number of seeds per spikelet in particular in the late developed tillers by the application of PGR (trinexapac-ethyl) and we suggest this as a possible explanation for the yield increases generally found in field trials where PGR are reported to increase the total number of seed per unit area.
OriginalsprogEngelsk
TitelProceedings of the 16th Nordic herbage seed production seminar : NJF seminar 491. 20 – 22 June 2016, Grimstad, Norway
Antal sider5
Udgivelsesårjun. 2016
Sider85-89
StatusUdgivet - jun. 2016
Begivenhed16th Nordic herbage seed production seminar: NJF Seminar 491 - Grimstad, Norge
Varighed: 20 jun. 201622 jun. 2016
http://njf.nu/seminar-summaries/ny-seminar-summary-page-6/

Seminar

Seminar16th Nordic herbage seed production seminar
LandNorge
ByGrimstad
Periode20/06/201622/06/2016
Internetadresse

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