Aarhus University Seal / Aarhus Universitets segl

Birte Boelt

Genotype variation of perennial ryegrass grown for seed

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

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.
Original languageEnglish
Title of host publicationProceedings of the 16th Nordic herbage seed production seminar : NJF seminar 491. 20 – 22 June 2016, Grimstad, Norway
Number of pages5
Publication yearJun 2016
Publication statusPublished - Jun 2016
Event16th Nordic herbage seed production seminar: NJF Seminar 491 - Grimstad, Norway
Duration: 20 Jun 201622 Jun 2016


Seminar16th Nordic herbage seed production seminar

See relations at Aarhus University Citationformats


ID: 102096944