Towards Model-Assisted Evaluation of Perennial Ryegrass Varieties

    Research output: Chapter in Book/Report/Conference proceedingC1: Articles in proceedingspeer-review

    Abstract

    As in other crops, evaluation of grass genotypes requires objective measures
    of the performance of individual plants or swards. However, because
    of genotype-by-environment-by-management interactions, the genetic
    value of a genotype cannot always be easily assessed. Detailed ecophysiological
    models that describe physiological processes determining phenotypic traits consist of parameters that can be considered as genetic coeffi cients that better represent the genetic value of the genotype. We used the LINGRA grass model to estimate model parameters for a perennial ryegrass variety based on harvest data from seven growing seasons. Despite its relative simplicity, the LINGRA model succeeded in simulating the dry matter harvest of different years, although it substantially underestimated the yield in the driest year. The grass-specifi c LINGRA features should therefore be combined with a more extensive ecophysiological model to enable reliable estimation of genotype specific
    parameters.
    Original languageEnglish
    Title of host publicationBreeding in a World of Scarcity : Proceedings of the 2015 Meeting of the Section “Forage Crops and Amenity Grasses” of Eucarpia
    EditorsIsabel Roldán-Ruiz, Joost Baert, Dirk Reheul
    PublisherSpringer International Publishing Switzerland
    Publication date2016
    Pages101-104
    ISBN (Print)978-3-319-28930-4
    ISBN (Electronic)978-3-319-28932-8
    DOIs
    Publication statusPublished - 2016
    Event2015 Meeting of the Section "Forage Crops and Amenity Grasses" of Eucarpia: Section Fodder Crops and Amenity Grasses: Breeding in a World of Scarcity - Gent, Belgium
    Duration: 13-Sep-201517-Sep-2015

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