Aarhus University Seal / Aarhus Universitets segl

Birte Boelt

Predicting anthesis date of perennial ryegrass (Lolium perenne L.) with growing degree-days at heading

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review


The agronomic significance of heading date in crop species is well documented; however, the date of anthesis is often less emphasized even though it has important applications for seed quality and yield. Moreover, the relationship between heading and anthesis is not well defined. We propose that growing degree-days to heading can be used as a good predictor of anthesis date. Using a broad range of 520 diploid perennial ryegrass accessions, anthesis was found to be highly correlated with growing degree-days to heading, and growing degree-days to heading could be used to predict anthesis date in historical data sets collected over many years. The ability to adequately predict anthesis will allow seed-producing farmers to improve seed quality by identifying times when high disease pressure will coincide with anthesis, thus allowing control measures to be applied.
Original languageEnglish
JournalGrass and Forage Science
Pages (from-to)233-238
Number of pages6
Publication statusPublished - Mar 2018

See relations at Aarhus University Citationformats

ID: 102099297