Abstract
In theory, seed germination, vigour and size (three aspects of seed quality) may influence crop yield through both indirect and direct effects. The indirect effects include those on percentage emergence and time from sowing to emergence. These influence yield by altering plant population density, spatial arrangement, and crop duration. Direct effects on subsequent plant performance are more difficult to discern. A number of different approaches to testing the hypothesis that seed quality affects subsequent plant performance (implicit in some definitions of vigour) are illustrated. The results show that it is possible to detect such effects in some circumstances.
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Ellis, R.H. Seed and seedling vigour in relation to crop growth and yield. Plant Growth Regul 11, 249–255 (1992). https://doi.org/10.1007/BF00024563
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DOI: https://doi.org/10.1007/BF00024563