Summary
Selection for yield under spaced plant conditions was carried out for three generations in five lines of Lolium perenne derived from natural populations and of known genetic organisation, and for two generations from within the bred variety S.23. Evaluation of all selected generations under comparable spacing conditions revealed that overall a slow positive response to selection had been achieved. The magnitude and direction differed for the several lines and was inconsistent. The variable response was accounted for by low heritability, genotype x year interaction and the small population size with high intensity of selection imposed.
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Hayward, M.D. Selection for yield in Lolium perenne. I. Selection and performance under spaced plant conditions. Euphytica 32, 85–95 (1983). https://doi.org/10.1007/BF00036867
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DOI: https://doi.org/10.1007/BF00036867