Genotype variation of perennial ryegrass grown for seed

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There is a large source of untapped variation within perennial ryegrass (Lolium perenne L.) populations that may increase seed yields. Understanding this variation starts with the development of potentials seed yield and how the length of this period may change with cultivar. Utilising 53 UPOV registered cultivars, heading date, anthesis and harvest timings were recorded. On the basis of strong linear relationships between these growth stages, critical photoperiods at secondary induction were calculated. Critical photoperiods for secondary induction occurred within 9 hour and 14.5 hour day lengths for the range of cultivars modelled. We show that in later secondary inducing cultivars, there is a reduced period for the development of seed yield potential. The results have wider implications for seed production management systems, with research trials needing to comprehend if the varying inputs alter the development of seed yield potential, or the utilisation of seed yield potentials.
OriginalsprogEngelsk
TitelProceedings of the 16th Nordic herbage seed production seminar : NJF seminar 491. 20 – 22 June 2016, Grimstad, Norway
Antal sider5
Udgivelsesårjun. 2016
Sider12-16
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
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